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b. Use Excel to select a random sample of 5 days in June 2017 and calculate...

b. Use Excel to select a random sample of 5 days in June 2017 and calculate the sample mean. Calculate the sampling error.

Math   Statistics-And-Probability   
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Answer #1

b:

There are 30 days in June. We need to generate 5 numbers between 1 and 30. Using excel function "=RANDBETWEEN(1,30)" , following are the selected days and calculations for mean and SD:

X (X-mean)^2
22 1.44
16 23.04
29 67.24
27 38.44
10 116.64
Total 104 246.8

The mean is

The standard deviation is

The sampling error is

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