# ch_6a - Chapter 7 1 MATH 200 Form A Evaluate Z/2 for = 0.1...

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Chapter 7 MATH – 200 Form A 1. Evaluate Z α /2 for α = 0.1 2. Evaluate t α /2 for α = 0.02 and n = 15 3. A study of 12 Dodge Vipers involved in collisions resulted in repairs averaging \$26, 227 and a standard deviation of \$15, 873. Find the 95% interval estimate of the mean repair cost for all Dodge Vipers involved in collisions. ______________________ 4. A study found the body temperatures of 106 healthy adults. The sample mean was 98.2 degrees and the standard deviation was 0.62 degrees. Find the 95% confidence interval. ______________________

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5. A study of car accidents showed that 15 of 200 accidents occurred on the highways. Construct the 99% confidence interval for the true proportion of car accidents that occur on the highways. ______________________
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ch_6a - Chapter 7 1 MATH 200 Form A Evaluate Z/2 for = 0.1...

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