Business Statistics

posted by .

You wish to learn the average age of an MBA student within 2 years and with 99% confidence. How large of a sample should you get?

Based on data from student_data.xls

This is what I have so far. I don't know what the standard deviation would be

N= [ZS/E]^2

N= [ 2.5758*s/2] ^ 2

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    A pilot study has revealed a sample standard deviation of 16 for age of people in the work force. How large a sample must be chose to obtain an estimator of the mean that, with 95% confidence, will be correct to within 2 years?

    A bank officer wants to determine the amount of the average total monthly deposits per customer at the bank. He believes an estimate of this average using a confidence interval is sufficient. a) How large a sample should he take to …
  3. Business Statistics

    You wish to learn the proportion of MBA students that are female within 3%, and with 98% confidence. How large of a sample should you get?
  4. Math Statistics

    5. Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include Sample size: 36 students Sample mean: 29.643 years Sample standard deviation: 4.564 years …
  5. statistic****help*****

    Show all your work. Indicate clearly the methods you use because you will be graded on the correctness of your methods as well as on the accuracy of your results and explanation. A simple random sample of adults living in a suburb …
  6. Statistics

    A research worker wishes to estimate the mean of a population by using sufficiently large sample. At the confidence level of 99%,the sample mean will be within 35% of the standard deviation. How large a sample should be taken?
  7. Math

    The college president asks the statistics teacher to estimate the average age of the students at their college. How large a sample is necessary?
  8. social statistics

    a smoking researcher is interested in estimating the average age when cigarette smokers first began to smoke. Taking a random sample of 25, she determines a sample mean of 16.8 years and a sample deviation of 1.5 years. Construct a …
  9. Statistics

    It is pretty common across most schools to find the grades at the MBA level divided between A's and B's. As such, you expect the mean GPA to be around 3.50. Using the sample of 200 MBA students, conduct a one-sample hypothesis test …
  10. statistics

    1. Suppose the estimate of a proportion of a normal population is to be within 0.05 using the 95% confidence level. How large a sample is required if: a. It is known from previous studies that p = 0.3?

More Similar Questions