Determine the critical value, ZO to test the claim about the population proportion p=0.250 given n=48 and $\hat { \mathrm { p } } = 0.231 . \text { Use } \alpha = 0.01$
A)$\pm 2.575$
B) $\pm 1.96$
C) $\pm 1.645$
D) $\pm 2.33$

Question

Determine the critical value,  ZO  to test the claim about the population proportion  p=0.250  given  n=48  and $\hat { \mathrm { p } } = 0.231 . \text { Use } \alpha = 0.01$
A)$\pm 2.575$
B) $\pm 1.96$
C) $\pm 1.645$
D) $\pm 2.33$

Quizplus · Accepted Answer

The critical value for a test with $\alpha = 0.01$ (two-tailed) is $\pm 2.575$, which corresponds to the z-scores that cut off the outer 0.5% of each tail in a standard normal distribution.

Determine the Critical Value, ZO to Test the Claim