Question

2. Interval estimation of a population mean, population standard deviation known Aa Aa E The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, included the question, "How many work-related e-mails do you receive during the typical workday?" Let x = the number of work-related e-mails a legal professional receives during a typical workday. Suppose that x is normally distributed with a known standard deviation of 22.7. A sample of 250 legal professionals was surveyed, and the sample's mean response was 36.7 e-mails. Use the sample information to estimate u, the mean number of work-related e-mails a legal professional receives during a typical workday. and a standard The sampling distribution of x is normal with a mean deviation Use the following Distributions tool to develop a 95% confidence interval estimate of the mean number of work-related e-mails a legal professional receives during a typical workday.

Blank options:

1) of 36.7 / equal of the unknown population mean / of 1.435674 / of 22.7

2) of 22.7 / of 0.0908 / of 1.4357 / that is unknown

3) 33.89 / 36.52 / -7.79 / 34.34

4) 36.88 / 39.51 / 81.19 / 39.06

Answer 1

solutions - An Normal 7 s equal to unknown? 1) lixo el = [ B population means 2) 3-FA 2017 - 11:4357] 3) 95% contidence interval = x + 20/267 1250 informal = 36.7 + 1.96 X 1.4357 & lower bound = 33.89 , 4) upper bound = [ 39.51