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Phone bills for residents of Shangri-La are normally distributed, with a mean of 98.75 gold coins...

Phone bills for residents of Shangri-La are normally distributed, with a mean of 98.75 gold coins and a standard deviation of 10.21 gold coins. Random samples of 48 phone bills are drawn from the population and the mean of each sample is determined.  Find the standard error of the mean of the indicated sampling distribution

Math   Statistics-And-Probability   
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Answer #1

X : Phone bills for residents of Shangri-La .

X ~ N (98.75,10.21)

here,we have,

Random samples of 48 phone bills are drawn from the population ..so, sample size (n) = 48

the standard error of the mean of the indicated sampling distribution is:-

*** if you have any doubt regarding the problem please write it in the comment box.if you are satisfied please give me a LIKE if possible...

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