Question

Number 6. 

5. Find the z-score for the sample mean for each of the following samples obtained from a popula
with u= 50 and o= 12.
5l0-50
az=M-M
la
a. M 56 for a sample of n = 4
b.. M 51 for a sample ofn = 36
12t74
# O.5
6. A sample of n = 16 scores is selected from a normal population with u= 60 and o= 20.
b)そ= 51ー50
a. What is the probability that the sample mean will be greater than 50?
b. What is the probability that the sample mean will be less than 56?
C. What is the probability that the sample mean will bewithin 5 points of the
population mean? That is, what is p(55< X < 65)?
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Transcribed Image Text:5. Find the z-score for the sample mean for each of the following samples obtained from a popula with u= 50 and o= 12. 5l0-50 az=M-M la a. M 56 for a sample of n = 4 b.. M 51 for a sample ofn = 36 12t74 # O.5 6. A sample of n = 16 scores is selected from a normal population with u= 60 and o= 20. b)そ= 51ー50 a. What is the probability that the sample mean will be greater than 50? b. What is the probability that the sample mean will be less than 56? C. What is the probability that the sample mean will bewithin 5 points of the population mean? That is, what is p(55< X < 65)?
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