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FinnZ [79.3K]
2 years ago
7

Nikhil asked 120 randomly chosen moviegoers to watch a clip of an upcoming movie and choose the best title. The title "Everythin

g” was chosen by 36 of the moviegoers as the preferred title. To the nearest percent, with a confidence level of 90% (z*-score 1.645), what is the confidence interval for the proportion of moviegoers who preferred the title "Everything”?
Mathematics
2 answers:
aleksandrvk [35]2 years ago
8 0
The mean proportion is p = 36/120 = 0.3.
The standard deviation of the proportion will be sqrt(p*(1-p)/n) = sqrt(0.3*0.7/120) = 0.0418. We multiply this by the z-score of 1.645 to get a deviation of 0.0688.
Therefore, the confidence interval is (0.3 - 0.0688, 0.3 + 0.0688), which is
(0.2312, 0.3688).
Vlada [557]2 years ago
8 0

Answer:

c ) 23-37

Step-by-step explanation:

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The larger of two numbers is four more than the smaller. if the larger is x what is the smaller?
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Step-by-step explanation:

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4 0
2 years ago
Choose all that rearrange the formula correctly.If
Sonbull [250]

Answer:

I sure hope none is an answer because none of these work!

Step-by-step explanation:

C = 59 (F - 32)

(C/59) = F - 32

F = C/59 + 32

So no :(

m = x + y + z3

y = m - x - z3

So no :((

s = r^2 - 1

r = sqrt(s+1)

So no :000

A = 12(a+b)

A = 12a + 12b

12b = A - 12a

b = A/12 - a

So no :00(((

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5 0
2 years ago
HELPP!!!!!!
Anna11 [10]

Answer:

$2.50 per movie and $6.50 per video game.

Step-by-step explanation:

The correct answer is $6.50 for each video game and $2.50 for each movie. My work:

3 x 2.50 = $7.50 and 5 x 6.50 = $32.50

32.50 + 7.50 = $40.00

12 x 2.50 = $30.00 and 2 x 6.50 = $13.00

30.00 + 13.00 = $43.00

Hope i helped you

5 0
3 years ago
Read 2 more answers
Grace and her dad are planning to attend the state fair. An adult ticket is $15.00. The price of an adult ticket is one half the
Aleks04 [339]

Answer:

The equation is 1/2 x + 8 = 15 ⇒ answer A

Step-by-step explanation:

* Lets explain how to solve the question

- Grace and her dad are planning to attend the state fair

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- The price of the adult ticket is one half the price of the student ticket

  plus $8

- Assume that the price of the student ticket is x

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∵ The price of the adult ticket is $15

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* The equation to determine how much Grace will pay for a student

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∴ The answer is choice A

8 0
3 years ago
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