A sample of n= 36 scores is selected form

A sample of n= 36 scores is selected form
Sample Mean and Population Mean: Standard Deviation

A sample of n= 36 scores is selected form a population with o= 12. if the sample mean of M=56 produces a z score of z= +3.00 then what is the population mean?

* 56

*52

* 54

*50

A sample of n= 9 scores is obtained from a population with u= 70 and o= 18. if the sample mean is M=76, what is the z-score for the sample mean?

* z= 0.50

*z= 1.00

*z= 0.33

* z= 3.00

A random sample of n=4 scores is obtained from a normal population with u= 30 and o= 8. what is the probability that the sample mean will be smaller than M= 22?

* 0.00003

* 0.1587

* 0.3085

* 0.0228

a random sample of n= 9 scores is obtained from a normal population with u= 40 and o= 18. what is the probability that the sample mean will be greater than M= 43?

* 0.1587

*0.0228

*0.4325

* 0.3085

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