An investigative bureau uses a laboratory method to match the lead in a bullet found at a crime scene with unexpended lead cartridges found in the possession of a suspect. The value of this evidence depends on the chance of a false positivethat ​is, the probability that the bureau finds a​ match, given that the lead at the crime scene and the lead in the possession of the suspect are actually from two different​ "melts," or sources. To estimate the false positive​ rate, the bureau collected bullets that the agency was confident all came from different melts.​ Then, using its established​ criteria, the bureau examined every possible pair of bullets and found matches. Use this information to compute the chance of a false positive.

Answers

Answer 1

Answer:

The correct solution will be "32.22%".

Step-by-step explanation:

The given values are:

X = 612

n = 1899

As we know,

⇒  [tex]P=\frac{X}{n}[/tex]

On substituting the above values, we get

⇒      [tex]=\frac{612}{1899}[/tex]

⇒      [tex]=0.3222[/tex]

So that the chance of false positive will be "32.22%".


Related Questions

Last year Lenny had an annual earned income of $58,475. He also had passive income of $1,255, and capital gains of $2,350. What was Lenny’s total gross income for the year?
a.
$58,475
b.
$59,730
c.
$60,985
d.
$62,080

Answers

Answer:

d.  $62,080

Step-by-step explanation:

Annual earned income  = $58,475

Passive income  = $1255

Capital gains  = $2350

Unknown:

Total gross income for the year = ?

Solution:

Gross income is the some of all the income within a given period time.

   Gross income = Annual income earned + Passive income + Capital gains

                           = $58,475 + $1255 + $2350

                           = $62,080

His gross income is $62,080

Answer:

His gross income is $62080

Step-by-step explanation:

Gross income, in other words, means total income. So if you want to find the gross income, you have to add ALL his earnings together.

$58475+$1255+$2350=$62080

And that is the final answer, since that his is only income earned.

A manufacturing plant produces custom hardware for specific applications in construction. One particular kind of bolt that is intended to have a length of 84mm is produced by two different machines, A and B. Tristan is an employee in the department that produces this bolt. He randomly selects samples of 100 bolts from each machine and measures the length of each one. The lengths of the bolts, in millimeters, are shown in the table below. Each machine produced a bolt that has a length of 84.05mm.Use Excel to calculate each machine's z-score for producing a bolt that has a length of 84.05mm.Round your answers to two decimal places.Machine A Machine B84.017 83.97183.999 83.9984.011 84.00284.007 84.01884.008 83.9884.016 83.99384 83.98884.026 84.00484.009 83.99184.031 83.95584.017 84.01584.022 83.96684.03 83.99584.07 83.97584.018 83.94484.05 83.9384.049 83.99984.026 83.98283.999 83.94884.002 83.95284.057 83.98483.991 84.00284.016 83.98684.006 84.0183.987 83.98384.034 84.01984.035 83.95884.006 83.99284.021 83.98784.022 83.97484.028 83.99684.004 83.98584.032 83.97884.02 83.98684.026 83.96284.041 83.9784.035 84.00483.996 84.00784.034 83.97784.042 83.96984.002 83.97384.019 83.97484.029 83.99184.016 83.97484.014 84.00284.014 83.97884.018 83.99584.014 8484.032 83.99284.042 83.99483.999 84.00284.003 83.95884.045 83.96584.024 83.98984.033 83.98384.031 83.99784.014 83.96183.983 83.97384.055 83.98384.024 83.96584.035 83.95684.052 83.98484.041 83.9584.029 83.97584.017 83.95784.006 83.97884.013 83.98484.013 83.94384.039 83.93984.008 83.99784.029 83.9984.02 83.98384.046 83.95784.004 84.00384.036 83.98984.013 83.97284.025 84.00683.979 83.98884.015 83.9784.01 84.00984.026 83.99184.016 83.9684.024 83.94584.024 83.99684.018 83.97384.006 83.96384.039 83.95984.004 84.01983.992 83.95784.007 84.00184.04 84.01383.999 8484.007 83.98484.009 83.96784.031 83.94884.003 83.98584.01 83.98884.011 83.96384.051 83.98584.002 84.001Provide your answer below: The z-score for machine A is___ and the z​ -score for machine B is ____

Answers

Answer:

The formula calculated the Z-score for all data points

Step-by-step explanation:

I have taken out time to prepare the raw file as a CSV file (comma separated variable) please see attached the excel format.

Z-SCORE= (DataPoint-AVERAGE(DataSet))/STDEV(DataSet)    

IN EXCEL,

AVERAGE, an excel function that calculates the Average of data set

STDEV.S: calculates the standard deviation while treating the data as a ‘sample’ of a population.

STDEV.P: This function calculates the standard deviation while treating the data as the entire population.

kindly find attached the excel sheet, with calculations done

Kindly let me know if you need more information,

Please help!!

Find the value of x.

A. 46
B. 60
C. 92
D. 96

Answers

X = 46 then answer is A

Answer:  A. 46

My reason is that you would want to times each one to see if they would equal 100 so what you would is (2 x 46+8) which equal 100.

Can someone help me please, I would appreciate it

Answers

Answer:

1.

-2x - 9y = -3

-7x - 9y= -33

Set equal to y.

-2x - 9y = -3

-9y = 2x - 3

y = -2/9x + 3/9

y = -2/9x + 1/3

-7x - 9y= -33

-9y = 7x - 33

y = -7/9x + 33/9

y = -7/9x + 11/3

Set equal to each other

-2/9x + 1/3 = -7/9x + 11/3

Combine like terms.

5/9x = 10/3

Multiply by 9/5

x = 6

Plug x in.

y = -7/9(6) + 11/3

y = -42/9 + 11/3

y = -42/9 + 33/9

y = -9/9

y = -1

(6, -1)

2.

-3x - 7y = 18

9x + 2y = 3

Set equal to y.

-3x - 7y = 18

-7y = 3x + 18

y = -3/7x - 18/7

9x + 2y = 3

2y = -9x + 3

y = -9/2x + 3/2

Set equal to each other.

-3/7x - 18/7 = -9/2x + 3/2

57/14x = 57/14

Multiply 14/57.

x = 1

Plug x in.

-3(1) - 7y = 18

-3 - 7y = 18

-7y = 21

y = -3

(1, -3)

Which is f(–3) for the quadratic function graphed?

Answers

Answer:

the answer is -9

could you also please mark me as brainliest?

Answer: -9

Explanation: that is what i got and so did the other person.

∠DAY is a right angle if m∠DAY = ½ x + 34 then solve for the value of x algebraically please help

Answers

Answer:

112°

Step-by-step explanation:

Given∠DAY is a right angle

and

m∠DAY = 1/2x + 34 Solving for x

Right angle equals 90°, therefore

1/2x + 34° = 90°1/2x = 90° - 34°1/2x = 56°x = 56°*2x = 112°

Which equation can be used to find 40 percent of 252

Answers

Answer:

you can look that up on google, answer is 100.8

Step-by-step explanation:

what is sum of 7+3(-4)(2)

Answers

Answer:

-17

Step-by-step explanation:

-4*2=-8

-8*3=-24

-24+7=-17

Simplify the
composite function
(g o f) (x)

f(x)=2x+3
g(x)=x​

Answers

Answer:

[tex]2x^{2} +3x[/tex]

Step-by-step explanation:

g(2x+3)

x(2x+3)

2x^2+3x

g(2x + 3 )
x ( 2x + 3 )
2x^2+3x

15 + x ≤ –45 solve using inverse opertation

Answers

I believe the answer is x ≤ -60.

question 14 I mark as brainliest ​

Answers

Answer: Number 4

Step-by-step explanation: None

PLS I REALLY NEED HELP: Write a function rule for the data in the following table.

Answers

Answer: 4x3=12 5x3=15 6x3=18 7x3=21 This is multiplied by 3

Step-by-step explanation:

Given that is a standard normal random variable, find for each situation (to 2 or 3 decimals). a. The area to the left of is .

Answers

This question is incomplete, the complete question is;

Given that is a standard normal random variable, find for each situation (to 2 or 3 decimals)

a. The area to the left of z is 0.8

b. The area to the left of z is 0.882

c. The area to the right of z is 0.8225

(Hint: Enter the positive z-value)

Answer:

a) z = 0.84

b) z = 1.185

c) z = -0.925

Step-by-step explanation:

a)

area to the left of z is 0.8

Making use of the standard normal table

p( Z < z ) = 0.8

we check the the probability of 0.8 in the standard normal table

so the corresponding value of z is 0.84

p( Z < 0.84 ) = 0.8

z = 0.84

b)

area to the left of z is 0.882

Making use of the standard normal table

p( Z < z ) = 0.882

we check the the probability of 0.882 in the standard normal table

so the corresponding value of z is 1.185

p( Z < 1.185 ) = 0.882

z = 1.185

c)

area to the right of z is 0.8225

Making use of the standard normal table

p( Z > z ) = 0.8225

1 - p( Z < z ) = 0.8225

p( Z < z ) = 1 - 0.8225

p( Z < z ) = 0.1775

p( Z < -0.925 ) = 0.1775

z = -0.925

Vincent’s baseball coach suggested that he drink one-half gallon of water daily. If Vincent drinks one-half gallon of water, how many 8-ounce glasses will he drink?

Answers

Answer:

8 eight ounce glasses

Step-by-step explanation:

1 gallon = 128 oz

.5 gallons = 64 oz

64 oz / 8 oz glasses = 8 8-oz glasses

i need help please lol​

Answers

Answer:

that's a right angle and its equals 90° but I think you add all of them 56°,31°, and x°

Answer:

x should equal 93

Step-by-step explanation:

180° - 56° - 31 degrees = 93°.

Let me if its wrong and I will correct it if is.

What is |1 - 8i|?
Please answer this question

Answers

Answer:

the answer is complicated it is 5 actully

Step-by-step explanation:

the answer is 5

Answer:

√(65) Simplified

Step-by-step explanation:

A consulting firm submitted a bid for a large research project. The firm's management initially felt they had a chance of getting the project. However, the agency to which the bid was submitted subsequently requested additional information on the bid. Past experience indicates that for of the successful bids and of the unsuccessful bids the agency requested additional information.
1. What is the prior probability of the bid being successful (that is, prior to the request for additional information)?2. What is the conditional probability of a request for additional information given that the bid will ultimately be successful?3. Compute the posterior probability that the bid will be successful given a request for additional information (to 2 decimals).

Answers

Complete question is;

A consulting firm submitted a bid for a large research project. The firm's management initially felt they had a 50-50 chance of getting the project. However, the agency to which the bid was submitted subsequently requested additional information on the bid. Past experience indicates that for 74% of the successful bids and 39% of the unsuccessful bids the agency requested additional information.

1. What is the prior probability of the bid being successful (that is, prior to the request for additional information)?

2. What is the conditional probability of a request for additional information given that the bid will ultimately be successful?

3. Compute the posterior probability that the bid will be successful given a request for additional information (to 2 decimals).

Answer:

1) 0.5

2)0.74

3) 0.65

Step-by-step explanation:

1) Since we are told that they had a 50-50 chance of getting the project, Thus;

Probability of a successful bid is;

P(Successful bid) = 50/(50 + 50) = 50/100 = 0.5

2) We are told that for 74% of the successful bids, the agency requested additional information. Thus;probability of a request for additional information given that the bid will ultimately be successful is;

P(request|successful) = 74% = 0.74

3) For us to find the posterior probability that the bid will be successful given a request for additional information will be gotten using bayes theorem to get;

P(successful|request) = [P(request|successful) × P(Successful bid)] / [(P(request|successful) × P(Successful bid)) + (P(request|unsuccessful bid) × P(unsuccessful bid))]

P(request|unsuccessful bid) is given as 0.39 and P(unsuccessful) will be 0.5.

Thus;

P(successful|request) = (0.74 × 0.5)/[(0. 74 × 0.5) + (0.39 × 0.5)] ≈ 0.65

I’ll mark Brainly! Andy deposits $25 in his checking account.
Bay City is 12 feet above sea level.
The team lost 12 yards on the play.
The temperature is 12 degrees below zero.
Anna withdrew $25 from the ATM.

Answers

1. Alright so the first one is Andy DEPOSITS money that means he adds money so that is a positive 25.

2. second one it says bay city is 12 ft ABOVE sea level that is also a positive number so that is positive 12.

3. For the third one a team LOST 12 yards so that is negative

4. The temperature is 12 degrees BELOW zero so that means it’s a negative 12

5.Anna WITHDREW $25 form a atm so that means she took out with is a negative 25


Name the shaded angle in four different ways.

Answers

Answer:

Step-by-step explanation:

ABC

CBA

1

B

Answer:

1 ABC CBA B is the correct answers

Solve the inequality for n


14 < n - 3 ​

Answers

Answer:

n>17

Step-by-step explanation:

Step 1: Flip the equation.

n-3>14

Step 2: Add 3 to both sides.

n-3+3>14+3

The value of the n is more than 17 which is mathematically given in the form of an inequality equation as n > 17.

What is inequality?

Inequality is simply a type of equation that does not have an equal sign in it. Inequality is defined as a statement about the relative size as well as is used to compare two statements.

The inequality equation is given below.

14 < n - 3 ​

Add 3 on both sides then we have

17 < n

More about the inequality link is given below.

https://brainly.com/question/19491153

#SPJ2

six-pack of Pepsi costs $4.18. At this rate, how much should 33 cans cost?

Answers

Answer:

Step-by-step explanation:

set up a proportion

6/4.18 = 33/x

137.94 = 6x

x = $22.99

What is the domaun of the relation
{(3, 4), (4, 3), (4, 4), (5, 2)}?


o {2, 3, 4, 5}
o {3, 4, 5}
o {4}
o {2, 3, 4}​

Answers

Answer:

[3,4,5]

Step-by-step explanation:

the answer is [3,4,5,]

because domain means it is the value of x.

somebody please answer, i need help asap. how many square meters ?

Answers

15 square meters. 1.5 times 10 = 15. 15 times 2 equals 30. Divide 30 in half, 15.

15-3yi=1/2x+2i solve for x and y

Answers

Answer:

x=2(5−3iy−2i)

Step-by-step

Regroup terms.

5-3iy= \frac{1}{2} x+2i

​​Simplify \frac{1}{2}x\frac{x}{2}

5-3iy= \frac{x}{2}+2i

Subtract 2i from both sides.

5−3iy−2i= \frac{x}{2}

Multiply both sides by 2.

(5−3iy−2i)×2=x

Regroup terms

2(5−3iy−2i)=x

Switch sides

x=2(5−3iy−2i)

The solution for the variables x and y are 30 and -2/3 respectively:

Given the expression 15-3yi=1/2x+2i, to solve for the value of x and y, we need to compare the real and the imaginary sides as shown:

Comparing the real sides:

[tex]15=\frac{x}{2} \\x= 15\times 2\\x = 30[/tex]

For the imaginary sides:

[tex]-3yi=2i\\-3y = 2\\y = -\frac{2}{3}[/tex]

Hence the solution for the variables x and y are 30 and -2/3 respectively:

Learn more here: https://brainly.com/question/17794535

The price of Stock A at 9 A.M. was​ $15.75. Since​ then, the price has been increasing at the rate of​ $0.05 per hour. At​ noon, the price of Stock B was​ $16.53. It begins to decrease at a rate of​ $0.13 per hour. If the stocks continue to increase and decrease at the same​ rates, in how many hours will the prices of the stocks be the​ same?

Answers

Answer: 3.5

Step-by-step explanation:

Answer:

give me a answer

Step-by-step explanation:


1. A person spends1/4 -part of his
income on food, 2/3part on house
rent and remaining * 630 on other
items. Find his house rent.
(a) * 2050
(b) 5040
(c) * 1000
(d) None of these​

Answers

Answer:

*2520

Step-by-step explanation:

A quarter of him income was spent on food

X (representing his income) - x/4= 3x/4

Then 2/3 was spent on house rent. Notice the, the question didnt say 2/3 of his income. Therefore it would be 2/3 of what is remaining after he pays for food.

2/3 * 3x/4= x/2

3x/4-x/2=x/4.

The remaining after all expenses are paid is 630. So:

x/4=630

x=630*4

x=2520

1/4 + 2/3 + 1/12 = 1

That is fraction on

Food + house rent + other items = Total amount

If 1/12 = 630.............. equation 1

Then 1/4 + 2/3 = 11/12

11/12= x................. equation 2

Cross multiply equation 1 & 2

1/12*x = 1155/2

To find x, cross multiply again

2x = 13860

x = 13860/2

x = 6930

This means that 11/12 + 1/12 = 6930 + 630

= 7560

Therefore 2/3(fraction for house rent)*7560(total amount)=5040

Answer is 5040

4-4/9x=2/3
Rewrite so there no more fractions

Answers

Answer:

x=7.5

Step-by-step explanation:

4-4/9x=2/3

-4/9x=2/3-4/1

-4/9x=-12/3-2/3

-4/9x=-10/3

TIMES 3 To each side.

-4x=-30

x=7.5


Will had 837 stamps in his collection. He
had 187 stamps from Tobago. The rest of his
stamps were from Fiji. How many stamps did
Will have from Fiji?
otebo...
Posted today at 8:49 am
Write a comment

Answers

Answer:

650 from fiji

Step-by-step explanation:

837-187=f

837-187=650

..............................................

Answers

i’m so confused ? lol

Find the solution to the following system using substitution or elimination: y = - 2x + 7 y = 3x - 8 O A. (1,1) O B. (2,1) O C. (3,1) O D. (3,2)​

Answers

The required solution to the given system of equations is (3,1) using the substitution method.

What is the equation?

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

The system of given equations following as:

y = - 2x + 7 ....(i)

y = 3x - 8   ....(ii)

We have to determine the solution to the given system using substitution or elimination.

The required solution using the substitution method would be as;

Substitute the value of the equation y = 3x - 8 in equation (ii), and solve for x

3x - 8 = - 2x + 7

3x + 2x = 7 + 8

5x = 15

x = 15/5

x = 3

Substitute the value of x = 3 in equation (ii), and solve for y

y = 3(3) - 8

y = 9 - 8

y = 1

Thus, the solution to the given system of equations is (3,1).

Learn more about the equation here:

brainly.com/question/13947055

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