Question

You want to estimate the average time college students spend studying per week. You know that...

You want to estimate the average time college students spend studying per week. You know that the population standard deviation for studying time per week for college students is 3.5 hours. You want a 99% confidence interval with a margin of error of 30 minutes (0.50 hours). How many students do you need in your study?

Group of answer choices

188.24 students

325 students

324.9 students

189 students

Math   Statistics-And-Probability   
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Answer:-

Given That:-

You want to estimate the average time college students spend studying per week. You know that the population standard deviation for studying time per week for college students is 3.5 hours. You want a 99% confidence interval with a margin of error of 30 minutes (0.50 hours).

How many students do you need in your study?

6=3.5 hours

Margin of error = E = 0.5 hours

At 99% confidence level the z is

Sample size

  

Group of answer is 325 students

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