Homework2_IEN312

# Homework2_IEN312 - 98% confidence interval for the mean...

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Reading assignment: Sections 9.4, 9.5 Homework 2 Due next Tuesday (2/1/2010) #1 (Modified from Exercise 9.6) The heights of a random sample of 50 college students showed a sample mean of 174.5 centimeters. Assume that the heights approximately follow a normal distribution with unknown mean µ and a known standard deviation σ =6.9 centimeters. (a) Construct a
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Unformatted text preview: 98% confidence interval for the mean height of all college students; (b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centimeters? Numerical answers: (172.23, 176.77); 2.27 Exercise 9.13 Numerical answer for 9.13: (0.978, 1.033)...
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## This note was uploaded on 01/19/2012 for the course IEN 312 taught by Professor Qiu during the Spring '11 term at University of Miami.

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