Q2) A college admission officer for an MBA program has determined that historically applicants have undergraduate grade point averages that are normally distributed with a population standard deviation of 0.60. Suppose that from a random sample of 20 applications from the current year, the sample mean grade point average is 2.95. a) What is the name of the variable? What is the point estimate of the population mean? b) Construct a 90% confidence interval estimate for the population mean grade point average. c) Write a summary based on your findings of b) using the graphical approach.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Q2) A college admission officer for an MBA program has determined that historically applicants
have undergraduate grade point averages that are normally distributed with a population standard
deviation of 0.60. Suppose that from a random sample of 20 applications from the current year,
the sample mean grade point average is 2.95.
a) What is the name of the variable? What is the point estimate of the population mean?
b) Construct a 90% confidence interval estimate for the population mean grade point average.
c) Write a summary based on your findings of b) using the graphical approach.
Transcribed Image Text:Q2) A college admission officer for an MBA program has determined that historically applicants have undergraduate grade point averages that are normally distributed with a population standard deviation of 0.60. Suppose that from a random sample of 20 applications from the current year, the sample mean grade point average is 2.95. a) What is the name of the variable? What is the point estimate of the population mean? b) Construct a 90% confidence interval estimate for the population mean grade point average. c) Write a summary based on your findings of b) using the graphical approach.
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