The data manager for a state political party gathered data to determine how many citizens would support the party's senate candidate. He polled citizens in 30 similarly sized senate districts and found a sample mean of 70,438 citizens. Statewide data shows that the population standard deviation is 645.3. What is the approximate 90% confidence interval for this situation?

Answers

Answer 1

Answer:

The approximate 90% confidence interval is;

70,244 to 70,732

Step-by-step explanation:

Here, we want to calculate the approximate 90% C.I for the situation

Mathematically;

CI = mean ± (z * SD)/√n

From the question;

mean = 70,438

SD = 645.3

n = 30

we can get z from the CI table

90% CI is same as; 1.645 z-score

So , substituting these values;

CI = 70,438 ± ( 1.645 * 645.3)/√30

CI = 70,438 ± 194

So the CI = 70,438 -194 to 70,438 + 194

= 70,244 to 70,732

Answer 2

Answer:

B. 70,244 and 70,632

Please give me brainliest, I really need it.


Related Questions

is 1/2(2p+9)=-p+5 a one solution or infinite solution or no solution​

Answers

Your inequality has one solution which is p = 1/4

Find the scale factor!

Answers

Answer:

1.8

Step-by-step explanation:

Answer:

satingin ko 1.8 yan lang

sana makatulong

PLSSS HELP ANSWER, THE QUESTION IS IN THE SCREENSHOT

Answers

Step-by-step explanation:

We know that f(x) is a positive, decreasing, and concave down function.

Therefore, the order, from least to greatest is:

right endpoint (since you're considering the smallest values)actual areamidpoint trapezoidalright endpoint

Find the common ratio
6.) -1, -6, -36, -216,
A.) r=5
B.) r=6
C.) r=-6
D.) r=4

Answers

Answer:

6

Step-by-step explanation:

try mulyipling each sequence by 6

A school paid $248 for new basketballs and soccer balls. The number of basketballs purchased was 6 less than 3 times the number of soccer balls purchased. Basketballs cost $28 each and soccer balls cost $20 each. How many total balls did the school purchase?

Answers

Answer:

4 Soccer balls and 6 Basketballs

Step-by-step explanation:

You can solve this problem by setting up a system of equations. Letting x be Soccer balls and y be Basketballs. Remember, Money goes with, Money goes with Money, meaning that for this problem the first equation that can be made is $248 = $28y + $20x with Y being basketballs and x being soccerballs. Next is a little more difficult. You will be creating the equation y=3x-6 because it is 6 less than 3 times the amount of x or Soccer balls. From here you can plug in the equations into a graphing calculator and graph it and see where the two lines intersect. This would be at (4, 6). When I said to let x equal Soccer Balls and y equal basketballs that is where I got the 4 soccer balls and 6 basketballs.

Find the difference. Write your answer in simplest form.

4 - 1 1/4

Answers

5/4 should be correct

Congruent angles are equal to 180* degrees, or how many degrees?

Answers

Answer:

congruent angles just have the same measurement, no matter what the degree is.

complementary angles are = to 90 degrees

supplementary angles are = to 180 degrees

need help with this question ​

Answers

Answer:

1. He added 5 instead of subtracted 5.

2. He should have subtracted 5.

3. 2 2/3

Step-by-step explanation:

3x+5=13

subtract 5 to both sides 3x=8

divide both sides by 3 x=8/3 or 2 2/3

Answer:

3x + 5 =13 is the error

Step-by-step explanation:

find the partimater of (-3,-2), (-5,-5), (1,-5), (3,-2)

Answers

The perimeter of the given rectangle is, 19.2112

Given that, the vertices of the rectangle are A(-3,-2), B(-5,-5), C(1,-5), D(3,-2) .

to find the perimeter through the given vertices, we need to calculate the distance from the vertices AB,BC,CD,DA.

we already know that the sum of all sides of the rectangle is known as the perimeter of the rectangle.

Using distance formula between 2 vertices , √[(x2-x1)²+(y2-y1)²]

AB = √[(-5+3)²+(-5+2)²]

     = √[(-2)²+(-3)²]

     =  √[4+9]

     =  √[13]

     =  √13

AB = 3.6056

BC = √[(1+5)²+(-5+5)²]

     = √[(6)²+(0)²]

     =  √[36+0]

     =  √[36]

     =  √36

BC = 6

CD = √[(3-1)²+(-2+5)²]

     = √[(2)²+(3)²]

     =  √[4+9]

     =  √[13]

     =  √13

CD = 3.6056

DA = √[(-3-3)²+(-2+2)²]

     = √[(-6)²+(0)²]

     =  √[36+0]

     =  √[36]

     =  √36

DA = 6

Therefore perimeter of the rectangle with given vertices is ,

  = AB+BC+CD+DA

  = 3.6056+6+3.6056+6

  = 19.2112

  = 19 (rounded to nearest tenth).

Therefore the perimeter of the rectangle with given vertices is 19.2112

Learn more about perimeter on,

https://brainly.com/question/19819849

#SPJ9

I need help solving this

Answers

Answer:

I think it's C.

Step-by-step explanation:

The Correct and Right Answer Is C

Please help me with this question

Answers

Answer:

37

add all of them together then divide it by two

There are 12800 films on Netflix. 9% of the films are horror. How many films are horror?

Answers

Answer:

1152

Step-by-step explanation:

You multiply the 12800 films by 9% to get your answer.

Answer:

1152

Step-by-step explanation:

Step 1: Our output value is 9.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$9=100\%$.

Step 4: Similarly, $x=12800\%$.

Step 5: This results in a pair of simple equations:

$9=100\%(1)$.

$x=12800\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{9}{x}=\frac{100\%}{12800\%}$

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{9}=\frac{12800}{100}$

$\Rightarrow x=1152$

Therefore, $12800\%$ of $9$ is $1152$

this took a really long time

This week, the art museum gave away 1,200 tickets to the Greco exhibit, which was 150 percent as many tickets as it gave away last week. Martin is trying to figure out how many tickets the museum gave away last week. His work is shown below.

Step 1: StartFraction part Over whole EndFraction = StartFraction 150 Over 100 EndFraction = StartFraction question mark Over 1200 EndFraction
Step 2: 100 times 12 = 1200
Step 3: 150 times 12 = 1800

In what step did Martin make a mistake, if any?
Step 1: Martin should have written his ratio as StartFraction 1200 Over question mark EndFraction.
Step 2: Martin should have divided 1200 by 8.
Step 3: Martin should have added 1200 and 150.
Martin did not make any mistakes.

Answers

Answer:

Step 1  1200/ i am pretty sure

Step-by-step explanation:

Hope it helpssss :DDD ;)

Answer:

A.)

Step-by-step explanation:

I got it right on the quiz.

ASAP PLZ HELP ME WILL MARK AS BRAINLIST IF RIGHT ANSWER

Answers

Answer:

28

Step-by-step explanation:

AB

4(7)=28

Answer:

3/4 BC or 3/2 CD

Step-by-step explanation:

AB = 3

BC = 4

   4 x 3/4 = 3

CD = 2

   2 x 3/2 = 3


p + 18 < 10 or p + 18 2 20

Answers

Answer:

Step-by-step explanation:??????

Given m|n, find the value of x.
kt
(x-17)
(5x-1)
>m
please help me

Answers

Answer:  33

=======================================================

Explanation:

The information that m || n is not needed or used, so I'm not sure why your teacher put that in there.

The angles shown are a linear pair. They are adjacent and they are supplementary. They form a straight angle.

Supplementary angles add to 180.

(x-17)+(5x-1) = 180

x-17+5x-1 = 180

(x+5x)+(-17-1) = 180

6x-18 = 180

6x = 180+18

6x = 198

x = 198/6

x = 33

---------

Extra info:

if x = 33, then,

x-17 = 33-17 = 165x-1 = 5*33-1 = 165-1 = 164

Adding the angles gives 16+164 = 180 which helps confirm our answer.

What is 54/72 in simplest form?

Answers

Answer:

3/4

Step-by-step explanation:

Answer:

3/4

Step-by-step explanation:

Write in standard form.
4.57 x 106

Answers

Answer:

485.42

Step-by-step explanation:

multiply by using` long multiplication

If Ms. Akers has 84 candy canes and 72 packets of hot cocoa. What is the greatest amount of groups can she make that have the same amount of candy canes and the same amount of hot cocoa packets?

Answers

Answer:

12

Step-by-step explanation:

The answer is 12 I think if that’s not right well your screwed

what is the slope of the line?​

Answers

Answer:

y will be on top x will b your denominator it shows the increase  and decreas  

Step-by-step explanation:

you got it it is 2/5 I think

It’s rise over run so it’s 5/2

pls answer I give brainliest

Answers

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

please mark brainiest

You have $50,000 to invest (YAY!). You need $350,000 in the account to retire in 30 years. At what continuously compounded interest rate would you need to invest to reach your goal?

What formula will you be using? Type your answer in the first math box below.

In the following math boxes, make your substitutions and show the ALGEBRAIC steps to your solution.

Answers

Answer:

You need to invest at a continuous compound interest rate of 6.701355026%

Step-by-step explanation:

The formula to use is the compound interest formula:A=P(1+r/100)^t

where A=Total amount at the end of the investment period

P=Principal amount

R=Rate of interest

T=Investment tenor/time

Now,

350,000=50000(1+r/100)^30 is what needs to be simplified to 6.701355026%

How can you determine the sale price if you are given the regular price and the percent of markdown? (List the steps)

Answers

Answer:

The sale price is $34

Step-by-step explanation:

If we are given the regular price P and the markdown percentage r, we follow these steps:

1) Calculate the markdown or discount amount M.

M = P*r/100

2) Subtract it from the regular price:

S = P - M

S is the sale price.

Example: The regular price is $40 and the markdown percentage is 15%. Thus:

1) M = $40*15/100 = $6

2) S = $40 - $6 = $34

The sale price is $34

HELP ME PLEASE THIS IS THE LAST PROBLEM IM STUCK ON AND I NEED LIKE THE WORK CUZ IF THERE ISNT SHE GANNA YELL AT ME THANK YOU:)

Answers

try a coordinate plane. tell me if im wrong

find the new balance ​

Answers

Answer:

the answer you have in the box is correct.

state if the three numbers can be the lengths of the sides of a triangle 7, 19, 9​

Answers

Answer:

Well i am not sure on that but i do know that the angle measures have to add up to 180 degrees hope that helps at least a little

Step-by-step explanation:

Dany has a business selling bracelets for 7.50 each. She only has enough material to make 5 bracelets. If x represents the number of bracelets sold and y represents the total cost, what is the range for this situation.

Answers

Answer:

The range is [0,37.5]

Step-by-step explanation:

We start by writing the equation that links x and y

From the question;

y = 7.5x

Now, she has enough material to make 5 only

When we talk of range, we are referring to the values on the y-axis

So the lowest y value is 0

and since the highest number of bracelets is 5;

The total cost of the 5 is 7.5(5) = 37.5

So the range is [0,37.5]

victor was asked to simplify this expression into exponential form: 8^0 + 12^0.
he says the answer is 2. do you agree with victor? explain your reasoning.

Answers

Answer:

yes, because anything to the 0 power is 1 so the equation would simplify to 1+1 which is equal to 2

Step-by-step explanation:

Complete the proof that XY - UZ.
Z
Y
Х
V
U
W

Answers

Yuv I think I am right

8 cm
8cm
16 cm
C
Find the area of triangle ABC:

Answers

Answer:

0cm

i think the the area doesn't exist

Step-by-step explanation:

soln:

given:

a=8cm

b=16cm

area of triangle ABC(A)=?

here,

A=b/4√4a^2-b^2

or,A=16/4√4(8)^2-(16)^2

or,A=4√4*64-256

or,A=4√256-256

or,A=4√0

or,A=4*0

•°•A=0cm

Other Questions
the larger of 2 consecutive integers is 10 more than twice the smaller. Find the integers Which of the following are most likely to be members of the technical crew for a production? A)producersB)bookkeepers C)camera operators D)actors can someone help me complete this lab tutorial? Two friends, Jordan and Nicole, took summer jobs. Nicole earned $208.80 in 8 hours. The table below represents Jordan's earnings in dollars and cents, y, for working x hours. if I travel 10 miles in a north-east direction, how far to the east did I travel? How far to the north? Cules son los principios de la democracia ? A leaf falls from the branch that is 24 feet high at a rate of 5 feet every 2 seconds. How high (relative to the ground) is the leaf after 3 seconds? This process of heat transfer by conduction would NOT work ____ A) in space B) in a solid C) under water D) in the atmosphere How did trade play a role in the downfall of the Mongol Empire?People wanted access to goods that were banned in the Mongol Empire.If you don't have an answer don't comment plsMerchants brought in people from other nations who wanted to end the Mongol Empire.Businesses failed, and trade slowed down so much that people left the Mongol Empire.Trade networks carried the bubonic plague around the Mongol Empire and killed millions of people. .What did Samuel Adams say when Britain decided to send more troops to America to restore order? DUE IN 10 MINS, WILL MARK BRAINLYESI NEED HELP WITH THE LAST QUESTION ASAP D':the order is messed up so you have to read from bottom to top When 35.0 mL of 0.400 M hydrochloric acid and 35.0 mL of 0.400 M sodium hypochlorite are combined, the pH of the resulting solution will be : A car is driving at 33 m/s and slows down to 29 m/s over a period of 10 seconds. what is its acceleration? How does the parallax of a nearby object compare to that of an object farther away?. Richards father is recovering from a heart attack and must be careful of his intake of high-fat foods. Write 3 factors that influenced the food choice. Please Help I'm stuck pleasse help me! giving crown! how long does it typically take for a magazine article about your business to appear, after the story is submitted? A formula that relates the amount of a substance to a mass? What linear function models the table of values? The National Science Institute was conducting research on the speed of Cheetahs. Afterconcluding their research, they were able to predict the cheetahs speed or distance when givencertain times or miles that the cheetah traveled. Complete the table of values and graph thedata on the coordinate plane.Time(min) |. Distance(mi)0. 01/2. 2/31. ? ? 38. ?Answer the following questions using the information above.1.) Is the relationship proportional? Why or why not?2.) What is the unit rate?