1. The sampling distribution of sample mean is normal with mean 36.7 and a standard deviation
2. Here we use Normal distribution to develop 90% confidance interval for the mean number of work-related emails during a typical workday.
The critical z-value for ?=0.1 is zc?=1.645.
The 90% confidence for the population mean ? is computed using the following expression
Therefore, based on the information provided, the 90 % confidence for the population mean ? is
=(36.7?2.361,36.7+2.361)
CI= (34.339, 39.061).
You can 90% confidant that the interval 34.339 to 39.061 indicates the population mean ?.
Please answer all parts 1010000003fb1 km 15250 O radea Assignment Due Sunday 29 18 at 13...
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 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...