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klasskru [66]
2 years ago
8

Suppose that a Coke/Pepsi survey was conducted of 400 randomly selected individuals from Gainesville. Two hundred people selecte

d Coke. Which of the following statements correctly describes how the confidence interval for the population proportion of people that prefer Coke should be computed?
A. There are not 15 successes and 15 failures. A confidence interval can be computed by adding 2 successes and 2 failures.
B. There are not 15 successes and 15 failures. A confidence interval can not be done.
C. There are not 15 successes and 15 failures. A confidence interval can be computed by adding 4 successes and 5 failures.
D. There are at least 15 successes and 15 failures. A large sample confidence interval for the population proportion can be computed (phat +/- z * sqrt(p*(1-p)/n) with no additional values added.
Mathematics
1 answer:
AlexFokin [52]2 years ago
6 0

Answer:

A. There are not 15 successes and 15 failures. A confidence interval can be computed by adding 2 successes and 2 failures.

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100

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You wonder if TV ads are more effective when they are longer or repeated more often or both. So you design an experiment. You pr
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Answer:

d) This is a completely randomized design with two explanatory variables (factors).

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2 years ago
Under what circumstances will the chi-square test for goodness of fit produce a large value for chi-square? Question options: a.
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Answer:

a.when the sample proportions are much different than the hypothesized population proportions

Step-by-step explanation:

A chi-square test for goodness of fit is used to check the sample data were distributed according to claim or not.

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If the goodness of fit produces a large value for chi-square then the sample means must not be close to the population mean. So, option (b) is incorrect.

4 0
2 years ago
The flathead rail tunnel in Montana is about 7 3/4 miles long. A train travels at a speed of 3/4 mile per mile minute.how long w
kogti [31]
7 3/4 × 3/4 = So u add 3×3=9
Then add 4×4=16 Give you 9/16
Then you add that 7 you left out with 9/16
But just the 9 not the 16
7 × 9 = 63 And your answer is 63/16
Hope i help :-)
5 0
2 years ago
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Point b is the correct answer love!
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