1. The following are the values of waiting time of 6 customers of a city bank...

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1. The following are the values of waiting time of 6 customers of a city bank in minutes β, 5, 6, 6, 8, 9 Find mean and stanidará deviations using the formula: n(n-1)

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Answer 1

Answer #1

Ans:

	x	x^2
	3	9
	5	25
	6	36
	6	36
	8	64
	9	81
Total	37	251

Mean=37/6=6.167

s^2=(6*251-37^2)/(6*(6-1))

s^2=4.567

standard deviation,s=sqrt(4.567)=2.137

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Answer 2

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