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A sample of size 25 will be drawn from a population with mean 34 and standard...

A sample of size 25 will be drawn from a population with mean 34 and standard deviation 8. Find the probability that x− will be greater than 36.

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Expert Solution

Solution :

mean = = 34

standard deviation = = 8

n = 25

= = 34  

= / n = 8/ 25 = 1.6

P( >36) = 1 - P( < 36 )

= 1 - P[( - ) / < (36 -34) / 1.6]

= 1 - P(z < 1.25 )

= 1 - 0.8944 = 0.1056

Probability =0.1056

orchestra answered 2 years ago
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