An investment service is currently recommending the purchase of shares of Dollar Department Store selling at $18 per share. The price is approximately normally distributed with a mean of 20 and a standard deviation of 2. What is the probability that in a year the shares will be selling: Between $21 and $24

Answers

Answer 1

Answer:

0.2857 = 28.57% probability that in a year the shares will be selling between $21 and $24

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

The price is approximately normally distributed with a mean of 20 and a standard deviation of 2.

This means that [tex]\mu = 20, \sigma = 2[/tex]

What is the probability that in a year the shares will be selling between $21 and $24

This is the pvalue of Z when X = 24 subtracted by the pvalue of Z when X = 21. So

X = 24:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{24 - 20}{2}[/tex]

[tex]Z = 2[/tex]

[tex]Z = 2[/tex] has a pvalue of 0.9772

X = 21:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{21 - 20}{2}[/tex]

[tex]Z = 0.5[/tex]

[tex]Z = 0.5[/tex] has a pvalue of 0.6915

0.9772 - 0.6915 = 0.2857

0.2857 = 28.57% probability that in a year the shares will be selling between $21 and $24


Related Questions

Kelly sells 62 shares of stock she owns for a total of $433. If the stock was in two different companies, one selling at $6.50 a share and the other at $7.25 a share how many of each did she sell?

Answers

Jelly sells 62 shares of stock she owns for a total of $433. If the stock was in two different companies, one selling at $6.50 a share & the other at $7.25 a share, how many of each did she sell?
----
Quantity Equation:: x + s = 62 shares
Value Equation::: 6.50x+7.25s = 433 dollars
---------------------------
Modify for elimination:
6.5x + 6.5s = 6.5*62
6.5x + 7.25s= 433
-----------------------------
Subtract and solve for "s":
0.75s = 30
-----
s = 40 shares (# of 7.25 shares)
x = 22 shares (# of 6.50 shares)
------------------
Cheers,
Stan H.

Answer:

Step-by-step explanation:

Please help, I will give brainliest, I am struggling badly.

Answers

Answer:

F) The solution to the system is (1/3,3)

Step-by-step explanation:

Let's attempt to solve this system:

Given:

9x+2y=9

-3x+y=2

Set up elimination:

9x+2y=9

3(-3x+y=2)

9x+2y=9

-9x+3y=6

________

      5y=15

        y=3

Plug y=3 into one of the original equations:

-3x+y=2

-3x+(3)=2

-3x+3=2

-3x=-1

x=1/3

So it is clear that there is only one solution pair that works. The correct answer is F) The solution to the system is (1/3,3)

The answe is the last one.
please give me points

Given 100 grams of bacteria that decreases at the rate of 1/2 per year. What would be an appropriate range after 4 years

Answers

Answer: B 0

Step-by-step explanation:

Select three ratios that are equivalent to
8
:
20
8:208, colon, 20.
Choose 3 answers:
Choose 3 answers:

(Choice A)
A
1
:
4
1:41, colon, 4

(Choice B)
B
4
:
10
4:104, colon, 10

(Choice C)
C
24
:
60
24:6024, colon, 60

(Choice D)
D
2
:
5
2:52, colon, 5

(Choice E)
E
10
:
24
10:24

Answers

Answer:

Its b,c,d

Step-by-step explanation:

Find the distance between 12 and -6. HELP.???

Answers

Answer:

espero que te haya servido :]

Find CD? Plssss help

Answers

Answer:

CD = 10

Step-by-step explanation:

Answer:

CD=10 is the answer to your question

What is the equivalent property of 6(2x - 1)

Answers

Answer:

12x-6

Step-by-step explanation:

Answer:

12x - 6

Step-by-step explanation:

Well all you gotta do is open up the brackets, and when you do open them up you have to distrubute the number on the outside: like this; 6 (2x-1) = 6*2x - 6*1 = 12x - 6

which equation is perpendicular to the x axis

Answers

Answer:

x=5

Step-by-step explanation:

Btw... Do mind giving me brainliest...? I need one more and I'm Virtuoso... Thx

I need help with this question answer ASAP

Answers

Answer:

A

Step-by-step explanation:

Plug 2 in for y in the second equation. You get 3 as x. So x=3 and y=2. (3,2)

69 = 50 + s; 17, 18, 19

Answers

The answer is 19 pls mark brainliest if correct

Answer:

19

Step-by-step explanation:

Which is more, 3 miles or 5,278 yards?

Answers

Answer:

Step-by-step explanation:

Miles into yards

1 mile = 1760 yards

3 miles = 1760 x 3 = 5280 yards

3 miles is more

The 3 miles is greater than 5,278 yards.

To compare 3 miles and 5,278 yards, we need to convert one of the measurements to the same unit as the other. Since 1 mile is equal to 1,760 yards, we can convert 3 miles to yards:

3 miles * 1,760 yards/mile = 5,280 yards

Therefore, 3 miles is equal to 5,280 yards.

Now we can see that 5,280 yards is greater than 5,278 yards.

In conclusion, 3 miles is greater than 5,278 yards.

To know more about miles:

https://brainly.com/question/32302516


#SPJ6

An automobile manufacturing plant produced vehicles today: were sedans, were trucks, and were motorcycles. Plant managers are going to select two of these vehicles for a thorough inspection. The first vehicle will be selected at random, and then the second vehicle will be selected at random from the remaining vehicles. What is the probability that the first vehicle selected is a sedan and the second vehicle is a truck?

Answers

Question is incomplete :

Number of each type of vehicle produced isn't given :

An automobile manufacturing plant produced 32 vehicles today: 10 were sedans, 11 were vans, and 11 were trucks. Plant managers are going to choose two of these vehicles for thorough inspection. The first vehicle will be chosen at random, and then the second vehicle will be chosen at random from the remaining vehicles.

What is the probability that the first vehicle selected is a sedan and the second vehicle is a truck?

Answer:

55 / 496

Step-by-step explanation:

Total possible outcomes = 32

Number of Sedan = 10

Vans = 11

Trucks = 11

P(first selection is sedan) :

Number of sedan / total number of vehicles

= 10 /32 = 0.3125

P(second is a truck)

Total possible outcomes = 32 - 1 = 31

Number of trucks = 11 / 31

(10/32 * 11/31)

= (10*11) / (32*31)

= 110 / 992

= 55 /496

Solve for the value of W

Answers

Answer:

Step-by-step explanation:

5w + 1° + 7w - 7° + 90° = 180° { being linear pair }

12w = 180° - 84°

12w = 96°

w = 96° / 12

w = 8°

Hope it helps :)

Answer:

5w+1+90+7w-7=180(linear pair)

12w=180-84

w=96/12=8

Any Netflix suggestions to watch?​

Answers

Answer:

stranger things

Step-by-step explanation:

Help plsssssssssssssssssssssss thanks so much

Answers

12.312>12.132 :D i hope it helps

Which of the following best describes the graph of the line represented by the table below?​

Answers

The line would be Horizontal
the answer is horizontal:D

how do find the motion rule in dilation?​

Answers

Answer: The Video Math Tutor. This is a great channel that provides several tutoring math videos covering different topics including Basic Math lessons,, calculator tips, brain teasers, and many more.

Step-by-step explanation:

Proportional Relationships & Percentages:Question 1
A study showed that the population of fish in a pond
increased from 310 to 403. What is the percent of the
increase?
Select one:

Answers

Answer:

(-2) + (3-7)

(-1) * (-2)

EVALUATE THE EXPRESSION

Step-by-step explanation:

THAT IS  a question. i need help pls

I NEED THE CORRECT ANSWER TO THIS ASAP FOR A TEST!!!!! What is the solution to the inequality?

-8m >48
_

A) m > 26
_
B) m > -6
_
C) m < -6
_
D) m < 6
_

Answers

the correct answer is c , m<6

Answer:

could be c

Step-by-step explanation:

I’m looking for number 3 on the picture attached

Answers

25 is the answer for number 3

due today helpppppppp meeeeeeeee

Answers

it’s the second one t=3s

PLEASE HELP!!! URGENT!!

Answers

Answer

234

Step-by-step explanation:

2) 3+ p= 8



I need help pls I don’t get it

Answers

Answer:

p=5

Step-by-step explanation:

3+ p= 8

subtract 3 on both sides

p=5

hope that helps :)

Help me pls pls pls pls

Answers

Answer:

1. 300

2. x-axis

3. 150

Step-by-step explanation:

I don't really understand exponents well I was wondering if I could get some help on this plz ​

Answers

Ok so do 9 times itself 5 times so basically its this:

9*9*9*9*9

Next do the same but 3 times:

9*9*9

Exponents are not this:

9*3

But this:

9*9*9

Your answer:

59049/729

Another way to say it:

59049 over 729

There is your answer hope this helps

Answer:

9^2 (9 to the power of 2)

Step-by-step explanation:

Ok, this is how you find exponents:

Well, exponents are really just abbreviated multiplication, so to find the numerical value of 9^5 and 9^3, you need to multiply 9 by itself 5 times and 3 times, then divide.

9*9*9*9*9= 59049

9*9*9= 729

Then you divide: 59049/729= 81.

But the question asks to rewrite the answer using a single positive exponent, so now we simplify 81 into an exponent.

The square root of 81= 9

9*9=81

81 as an exponent= 9^2 (or 9 multiplied 2 times)

Another simple trick for solving exponents is to subtract the exponents:

9^5-9^3= 9^2 (5-3=2)

I hope this answer was helpful!

f (x) = 3x2 - 24x + 15

Answers

Answer:

F(x)=-24x+21

Step-by-step explanation:

Can someone please help me with this problem

Answers

Answer:

the piont was 10.15 away from the that is dead see yea

Step-by-step explanation:

Help!! Problem solving with angles.

Answers

The answer is 61 degrees

I knew that the measure of angle x and the angle measuring 29 degrees equaled 90 degrees. So I subtracted 29 from 90.

X+29=90
90-29=61

A triangle has an area of 64 cm² and a base of 10 cm².
What is the height of the triangle?plsssssssssssss help

Will give 5/5 if 2 ppl answer I can give brainlest

Answers

Answer:

Your answer is 12.8

Hope that this is helpful. Tap the crown button, Like & Follow me

1/2x-2
One half multiply negative 2

Answers

Answer:

Step-by-step explanation:

11

Answer:

-1

Step-by-step explanation:

first 1/2 of 2 is 1

the 2 is negative so it makes the solution negative

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