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Acrandom sample of 19 men's resting pulse rates showed a mean of 73.1 beats per minute and standard deviation of 19.7. Assume that pulse rates
Acrandom sample of 19 men's resting pulse rates showed a mean of 73.1 beats per minute and standard deviation of 19.7. Assume that pulse rates are Normally distributed. Use the table to complete parts (a) through (c) below. Click the icon to view the t-table a_Find a 95% confidence interval for the population mean pulse rate of men, and report it in a sentence. Choose the correct answer below and, if necessary, fill in the answer boxes to complete your choice (Type integers or decimals rounded to the nearest tenth as needed. Use ascending order.) O A. We are 95% canfident that the population mean resting pulse rate is between and O B. There is a 95% chance that all resting pulse rates will bs betwsen | and O C. We are 95% canfident that the sample mean resting pulse rate is between and (O D. The requirements for constructing a confidence interval are not satisfied. b_Find a 90% confidence interval and report it in a sentence. Choose the correct answer below and, if necessary, fill in the answer boxes to complete your choice. (Type integers or decimals rounded to the nearest tenth as needed. Use ascending order.) O A. e are 90% confident that the population mean resting pulse rate is between and (O B. We are 90% confident that the sample mean resting pulse rate is betwsen | | and (O C. There is a 90% chance that all resting pulse rates will be between and (& D. The requirements for constructing a confidence interval are not satisfied. . Which interval is wider and why? () A. The 95% interval is wider because it has a greater confidence level, and so we use a smaller value of t*, which creates a wider interval (O B. The 95% interval is wider because it has a greater confidence level, and so we use a bigger value of t*, which creates a wider interval (O C. The 90% interval is wider because it has a lower confidence level, and so we use a bigger value of t*, which creates a wider interval. () D. The 90% interval is wider because it has a lower confidence level. and so we use a smaller value of f*, which creates a wider interval
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