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3. A firm would like to estimate the proportion of employees that use a ride-share service;...

3. A firm would like to estimate the proportion of employees that use a ride-share service; e.g., Uber and/or Lyft. In a sample of 500 employees, 417 use ride-share. Round final answers to two decimal places. Solutions only.

(a) True, False, or Uncertain: The parameter of interest is the mean number of employees in the population who use ride-share.

(b) The critical value for a 99% confidence interval for this sample is ___.

(c) A 99% confidence interval for the proportion of employees who use a ride-sharing service is from ___ to ___.

math   Statistics-And-Probability   
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Answer Date: 15/11/2018 a) The parameter of interest is the mean number of employees in the population who use ride-share The answer is False Dteret n sbo use ride-share. b) The critical value for a 99% confidence interval for this sample is. From the standard normal table, the z-critical value for two-tailed at 99% confidence level is 2.575 The critical value for a 99% confidence interval for this sample is 2.575

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