Question

Use the following information to answer the next $15$ exercises: Indicate if the hypothesis test is for

a. independent group means, population standard deviations, and/or variances known

b. independent group means, population standard deviations, and/or variances unknown

c. matched or paired samples

d. single mean

e. two proportions

f. single proportion

According to a television commercial, $80\%$of dentists agree that Ultrafresh toothpaste is the best on the market

Short answer

For single proportions, the test is used.

Step-by-step solution

Given information

According to a television commercial, $80\%$ of dentists feel that ultra-fresh toothpaste is the best.

Explanation

Assuming that a majority of dentists think that ultra-fresh toothpaste is the best choice asp.

The null and alternative hypothesis is given as

$$\begin{gathered} H_0:P=0 \\ {H}_a:P>0 \end{gathered}$$

This shows that this hypothesis test is for single proportions.