Question 19 The mean of the data below is 44 and the standard deviation is 21.79...

Question

Question

Answer 1

Answer #1

for 1 standard deviaiton:

corresponding interval =

(44-1*21.79,44+1*21.79)=(22.21,65.79)

=(22/40)*100 =55% percentage of this data falls within 1 standard deviation of the mean?

for 2 standard deviaiton:

corresponding interval =

(44-2*21.79,44+2*21.79)=(0.42,87.58)

(39/40)*100 =97.5% percentage of this data falls within 2 standard deviations of the mean?

for 2 standard deviaiton: 100 percentage of this data falls within 3 standard deviations of the mean?

4() yes

Answer 2

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