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MINITAB Assignment 4: Confidence Intervals and Hypothesis Testing

Solved MINITAB assignment on confidence intervals and hypothesis testing.

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    MINITAB Assignment 4 Fall 2015 Make sure you so the following: 1. Have your name on the document in the left hand corner 2. Put STAT100 under your name 3. Put MINITAB Assignment 4 centered on the page 4. Number and letter the answers accordingly 5. Copy and paste all generated graphics into your paper. 6. Use complete and coherent sentences to answer the questions. 7. Upload your MINITAB assignment on ELMS before the due date and time otherwise it is considered late. Please use your name_MINITAB_4 as the file name. For example: schimiak_MINITAB_4 or suechimiak_MINITAB_2 (make sure you save your document on your computer or email it to yourself) 1. The heights were recorded for a Simple Random Sample of 270 freshmen . The mean of this sample was 66.5 inches. The heights are known to be Normally Distributed with a population standard deviation of 5.1 inches. Round answers to one decimal place. ( You do not need a data set for this problem.) a. From the simple random sample of 270 freshmen heights: i. Calculate the 9 6 % Confidence Interval for the population mean h eight of a freshm a n . Interpret the confidence interval. Use MINITAB to compute the confidence interval. ( C opy and paste the MINITAB output found in the Session w indow after your answer. ) The 96% Confidence Interval for the population mean height of a freshman is {65.863, 67.137}. That means we are 96% confiden t that the population mean height of a freshman is within the interval {65.863, 67.137}. ii. Calculate the 8 7 % Confidence Interval for the population mean h eight of a freshm a n . Interpret the confidence interval. Use MINITAB to compute the confidence interval. (Copy and paste the MINITAB output found in the Session window after your answer.)

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