C 6 https://www.mathxl.com/Student/PlayerHomework asp MATH 15302 Homework: Revie

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C 6 https://www.mathxl.com/Student/PlayerHomework asp MATH 15302 Homework: Review for the Comprehensive Final Exam Score: 0 of 1 pt 27 of 35 30 completel HW Score: 75.859%, 26,55 of 3 5.4.15 The population mean and standard deviation are given below. Find the required probabatyand determine whether the gven sample mean would be For a sample of n 60, find the probablity of a sample mean being less than 25.1 iP 25 and 127 EH Clck the icon to view page 1 ofthe standard normal tatie. csok the icon to view page 2 of the standard normal table. For a sample of n .eo, the probability of a sample mean being less than 25.1 r, 25 and a .127 s (Round to four decimal places as needed Enter your answer in the answer box and then cack Check Answer. 1

Explanation / Answer

Q-5.4.15

Standard deviation of mean =1.27/sqrt(60)=0.16

SO, P(Sample mean <25.1)=0.7340 (If answer is not ok then you can change decimals of standard deviation)

This is using excel function =NORMDIST(25.1,25,0.16,TRUE)

Q-5.2.7-T

Part-a

P(Height<67)=0.3821

Using excel function =NORMDIST(67,67.6,2,TRUE)

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