A mndmce interval for estimating the mean A: la E An industrialforganizational psychologist wants to improve worker productivity for a client rmI...

The estimated standard error is one of the following choices

1.3. A mnfidmce interval for estimating the mean A: la E An industrialforganizational psychologist wants to improve worker productivity for a client firmI but first he needs togain a better understanding of the life ofthe typical white-collar professional. Fortunately, he has access to the 2908Workplace Productivity Surlireyr commissioned by Lexishlexis and prepared by Woddflne Research, which suryeyed asampleof 550 white-collar professionals {25!} legal professionals and 400 other professionals}. Dneof the survey questions wasr “How many hours do you work at yourjot: on atypical workday?“ For thesubsample of legal professionals [n = 250}, the mean response was M = 9.9 hoursr with a sample standard deviationof s = 9.? hours. The estimated standard error is so = 99% confidence interval estimate of the mean number of hours legal Use the following Distributions tool tI .- - I I I I