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What is the computed z-value for testing

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Reference no: EM1392051

A sample of size 200 from Population 1 has 50 successes. A sample of size 200 from population 2 has 40 successes. What is the computed z-value for testing the null hypothesis that the proportion of successes in Population 1 exceeds the proportion of successes in Population 2 by 0.025?

a.

0.60

b.

1.20

c.

1.28

d.

1.96

Reference no: EM1392051

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