Question

Problem 10.

(10 points)
The length (in pages) of math research projects is given below. Using this information, calculate the mean and the standard deviation regarding the data set as a sample.

sample mean =
sample standard deviation =


Now use the same data set, but this time regard it as a population. Calculate the mean and the standard deviation.


population mean =
population standard deviation =

Note: You can earn partial credit on this problem.

Answer 1

Answer:

HERE SOME DATA IS MISSING I AM ASSSUMING THE DATA TO SOLVE THIS ABOVE PROBLEM .

YOUR SATISFY WITH THIS ANSWER I HOPE

Σ t, 1) Sample mean (T) η

  

+30 2+11+4+ 9 22.8889

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2 Sample standard dev(s) = V (xi n-1

  

Sample standard dev(s) (22 – 22.8889)2 + (11 – 22.8889)2 +---+ (30 – 22.8889)2 8

Sample standard dev(s) = 6.8272

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2. population mean (u) = T = 22.8889

population standard dev (0) =

Σ(α, - Τ)2 n

(22 – 22.8889)2 + (11 – 22.8889)2 +---+ (30 – 22.8889)2 population standard dev(o) = 9

population standard dev (0) = 6.4368

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