What occurs to boundaries for the critical regions

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Reference no: EM13109674

1. The value of z score in hypothesis test is influenced by the various factors. Assuming that all other variables are held constant describe how value of z is influenced by each of the following:

a. increasing difference b/w sample mean and orginal population mean.
b.increasing population standard deviation.
c. increasing number of scores in the sample.

2. If alpha level is changed from a = .05 to a = .01,

a. What occurs to boundaries for the critical regions?
b. What occurs to probability of a type I error?

Reference no: EM13109674

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