SOLUTION: The average number of moves a person makes in his or her lifetime is 12. If the standard eviction is 3.2, find the probability that the mean of a sample of 36 people is a. Less t

Question 1154943: The average number of moves a person makes in his or her lifetime is 12. If the standard eviction is 3.2, find the probability that the mean of a sample of 36 people is
a. Less than 10
B.greater than 10
C. Between 11 and 12
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x bar-mean)/sigma/sqret(n)
=(10-12)/3.2/6
=-2*6/3.2=-3.75
The probability of z being less than -3.75 is 0.00009
greater than 10 prob.is the complement or 0.99991
between 11 and 12 is z between -1*6/3.2=-1.875, and 0. This probability is 0.4696
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