You randomly select 18 adult male athletes and measure the resting heart rate of each. The sample
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You randomly select 18 adult male athletes and measure the resting heart rate of each. The sample mean heart rate is 64 beats per minute, with a sample standard deviation of 2.5 beats per minute. Assuming the heart rates are normally distributed, should you use the standard normal distribution, the t-distribution, or neither to construct a 90% confidence interval for the population mean heart rate? Explain your reasoning.
a. Is σ known?
b. Is either the population normally distributed or n ≥ 30?
c. Decide which distribution to use, if any, and explain your reasoning.
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a Is known No b Is n 30 No Is th...View the full answer
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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