Assume that z is the test statistic and calculate the value of z for each of the

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Assume that z is the test statistic and calculate the value of z for each of the following:

a. Ho:   10,   3, n  40, x  10.6

b. Ho:   120,   23, n  25, x  126.2

c. Ho:   18.2,   3.7, n  140, x  18.93

d. Ho:   81,   13.3, n  50, x  79.6

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