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Find the number of standard deviations from the mean. Round your answer to two decimal places 12) The annual snowfall in a to
Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual. Consider a s
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Answer #1

12)

Answer)

Z score indicated the number of standard deviation away the given score from mean is

Z = (x - mean)/s.d

Given mean = 33

S.d = 12

Z = (69 - 33)/12

Z = 3

So, 69 is 3 standard deviation above the mean

13)

Mean = 17.7

S.d = 2.1

Z = (20.2 - 17.7)/2.1

Z = 1.19

No it is not unusual as it is not greater than 2 and not less than -2

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