1.Compute the z scores for the following scores from a sample with a standard deviation of 10 and a mean of 50:

a.78

b.92

c.38

d.44

1.Compute the one sample Z-test for the following problems.

A test is conducted for H₀: = 40, with = 5.A sample size of 100 is selected = 42.2

a.What is the null and alternative hypothesis for a 2-tailed test of significance?

b.Compute the SEM for this problem.

c.Compute the one Sample Z-test for this problem.