You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats. You sample 150 men, and 80% own cats. You sample 190 women, and 55% own cats. Find p¯ (p-bar), as a decimal, rounded to two decimal places.

A research company surveyed 1024 people who routinely fly for business travel purposes and found that 384 of them were generally satisfied with the flights they took. Find the standard error for the sample proportion of people who routinely fly for business travel purposes and are generally satisfied with the flights they take. Enter your answer as a decimal rounded to three decimal places.

You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 180 men, and 75% own cats.You sample 100 women, and 60% own cats.Find the test statistic.

In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…

Prof. Leen wants to estimate the more than 92% percent of adults living in a large city have cell phones. Prof. Leen randomly selects 160 adult residents to determine whether they have cell phones. Of the 160 people sampled, 155 own cell phones. Find the p-value for the test. (Round the answer to three decimal places.)

I can't understand why the data is the percentage of surveyed parents.

Suppose a sample of 830830 Americans over 4141 is drawn. Of these people, 673673 don't smoke. Using the data, estimate the proportion of Americans over 4141 who smoke. Enter your answer as a fraction or a decimal number rounded to three decimal places.

You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 110 men, and 75% own cats.You sample 150 women, and 65% own cats.Find the proportion of the pooled samples, (pcpc), as a decimal, rounded to two decimal places.

What is the p value ?

The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level.  Suppose a sample of 2552 tenth graders is drawn. Of the students sampled, 2119 read above the eighth grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places.