Assume that you plan to use a significance level of $\alpha = 0.05 \text { to test the claim that } \mathrm { p } _ { 1 } = \mathrm { p } _ { 2 }$ se the given sample sizes and
numbers of successes to find the z test statistic for the hypothesis test.
-A random sampling of sixty pitchers from the National League and fifty-two pitchers from the American League showed that 15 National and 10 American League pitchers had E.R.A's below 3.5.
A) $z = 127.077$
B) $\mathrm { z } = 10.583$
C) $z = 0.731$
D) $z = 0.950$

Question

Assume that you plan to use a significance level of $\alpha = 0.05 \text { to test the claim that } \mathrm { p } _ { 1 } = \mathrm { p } _ { 2 }$ se the given sample sizes and
numbers of successes to find the z test statistic for the hypothesis test.
-A random sampling of sixty pitchers from the National League and fifty-two pitchers from the American League showed that 15 National and 10 American League pitchers had E.R.A's below 3.5. 
A) $z = 127.077$
B) $\mathrm { z } = 10.583$
C) $z = 0.731$
D) $z = 0.950$

Quizplus · Accepted Answer

The z test statistic is calculated using the formula for the difference between two proportions. The calculated z value is approximately 0.731.

Assume That You Plan to Use a Significance Level Of \alpha