The test statistic of $$ z=1.23 $$ is obtained when testing the claim that $$ p0.35 $$. This is a right-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative $$ z $$ scores. Click here to view the standard normal distribution table for positive $$ z $$ scores. a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) A. There is one critical value; the critical value is $$ \square $$. B. There are two critical values, the lower critical value is $$ \square $$ and the upper critical value is B.

Question

The test statistic of $$ z=1.23 $$ is obtained when testing the claim that $$ p>0.35 $$. This is a right-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative $$ z $$ scores. Click here to view the standard normal distribution table for positive $$ z $$ scores. a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) A. There is one critical value; the critical value is $$ \square $$. B. There are two critical values, the lower critical value is $$ \square $$ and the upper critical value is B.

UpStudy AI · Accepted Answer

We are given a right-tailed test at significance level $$ \alpha = 0.01 $$. This means that the area in the right tail of the standard normal distribution is 0.01. The corresponding critical value is the $$ z $$-score such that

$$
P(Z > z_{\alpha}) = 0.01.
$$

This is equivalent to finding $$ z_{0.99} $$ where

$$
P(Z < z_{0.99}) = 0.99.
$$

From the standard normal distribution table, we find that

$$
z_{0.99} \approx 2.33.
$$

Thus, there is one critical value and it is $$ 2.33 $$.

The correct choice is:

**A. There is one critical value; the critical value is $$ 2.33 $$.**
There is one critical value, which is 2.33.

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