Solution to STAT 350 Exam 2 Review Questions ….pdfVIP

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Solution to STAT 350 Exam 2 Review Questions ….pdf

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Solution to STAT 350 Exam 2 Review Questions ….pdf

Solution to STAT 350 Exam 2 Review Questions (Spring 2015) 04/11//2015 1. A random sample of 26 offshore oil workers took part in a simulated escape exercise, and their times (sec) to complete the escape are recorded. The sample mean is 370.69 sec and the sample standard deviation is 24.36 sec. Construct a 95% confidence interval on the true average escape time. Interpret your interval. 1/16 Solution to STAT 350 Exam 2 Review Questions (Spring 2015) 04/11//2015 2. An investigator wishes to estimate the difference between population mean SAT-M scores of incoming freshmen in the College of Engineering and in the College of Science at Purdue University. The population standard deviations are both roughly 100 points and equal sample sizes are to be selected. What value of the common sample size n will be necessary to estimate the difference to within 10 points with 99% confidence? 2/16 Solution to STAT 350 Exam 2 Review Questions (Spring 2015) 04/11//2015 3. The life in hours of a battery is known to be approximately normally distributed. The manufacture claims that the average battery life exceeds 40 hours. A random sample of 1