SOLUTION: The length of the babies at birth has a mean = 19 inches and a standard deviation = 1.3 inches. Sample of 100 babies are chosen:
a) Find the mean and standard deviation of the sam
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-> SOLUTION: The length of the babies at birth has a mean = 19 inches and a standard deviation = 1.3 inches. Sample of 100 babies are chosen:
a) Find the mean and standard deviation of the sam
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Question 1181113: The length of the babies at birth has a mean = 19 inches and a standard deviation = 1.3 inches. Sample of 100 babies are chosen:
a) Find the mean and standard deviation of the sampling distribution of the means.
b) What is the probability that one of the samples of 100 babies will have a mean (i) less than 18.7 inches, (ii) more than 20.2 inches. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! a.The mean length of S100 is 19 in.
The sd is sigma/sqrt(100), or 1.3/10 or 0.13 inches
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b. z=(xbar-mu)/sigma/sqrt(n)
so -0.3/0.13 is -2.31 and the probability z<-2.31 is 0.0105
and z=1.2/0.13 which is z>9.2 s that probability is 0.
