Question

Use the following information to complete parts (a) through (e) below. A researcher wanted to determine the effectiveness of a new cream in the treatment of warts. She identified 148 individuals who had two warts. She applied cream A on one wart and cream B on the second wart. Test whether the proportion of successes with cream A is different from cream B at the $\alpha = 0.01$ level of significance. Treatment A Success Treatment B Success Failure 69 Failure 10 14 55 Calculate test statistic. $\chi^2 = $ (Round to two decimal places as needed.) Identify the P-value. The P-value is (Round to three decimal places as needed.) A. Reject the null hypothesis because there is not sufficient evidence to conclude that the proportion of errors for the new method is less than the proportion of errors for the existing method. B. Reject the null hypothesis because there is sufficient evidence to conclude that the proportion of errors for the new method and the proportion of errors for the existing method are different. C. Do not reject the null hypothesis because there is not sufficient evidence to conclude that the proportion of errors for the new method and the proportion of errors for the existing method are different. D. Do not reject the null hypothesis because there is sufficient evidence to conclude that the proportion of errors for the new method is greater than the proportion of errors for the existing method.

          Use the following information to complete parts (a) through (e) below.
A researcher wanted to determine the effectiveness of a new cream in the treatment of warts. She identified 148 individuals
who had two warts. She applied cream A on one wart and cream B on the second wart. Test whether the proportion of
successes with cream A is different from cream B at the $\alpha = 0.01$ level of significance.
Treatment A
Success
Treatment B
Success
Failure
69
Failure
10
14
55
Calculate test statistic.
$\chi^2 = $ (Round to two decimal places as needed.)
Identify the P-value.
The P-value is  (Round to three decimal places as needed.)
A. Reject the null hypothesis because there is not sufficient evidence to conclude that the proportion of
errors for the new method is less than the proportion of errors for the existing method.
B. Reject the null hypothesis because there is sufficient evidence to conclude that the proportion of errors
for the new method and the proportion of errors for the existing method are different.
C. Do not reject the null hypothesis because there is not sufficient evidence to conclude that the
proportion of errors for the new method and the proportion of errors for the existing method are
different.
D. Do not reject the null hypothesis because there is sufficient evidence to conclude that the proportion of
errors for the new method is greater than the proportion of errors for the existing method.

Use the following information to complete parts (a) through (e) below.
A researcher wanted to determine the effectiveness of a new cream in the treatment of warts. She identified 148 individuals
who had two warts. She applied cream A on one wart and cream B on the second wart. Test whether the proportion of
successes with cream A is different from cream B at the α = 0.01 level of significance.
Treatment A
Success
Treatment B
Success
Failure
69
Failure
10
14
55
Calculate test statistic.
χ^2 = (Round to two decimal places as needed.)
Identify the P-value.
The P-value is (Round to three decimal places as needed.)
A. Reject the null hypothesis because there is not sufficient evidence to conclude that the proportion of
errors for the new method is less than the proportion of errors for the existing method.
B. Reject the null hypothesis because there is sufficient evidence to conclude that the proportion of errors
for the new method and the proportion of errors for the existing method are different.
C. Do not reject the null hypothesis because there is not sufficient evidence to conclude that the
proportion of errors for the new method and the proportion of errors for the existing method are
different.
D. Do not reject the null hypothesis because there is sufficient evidence to conclude that the proportion of
errors for the new method is greater than the proportion of errors for the existing method.

Added by Jose Angel B.

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