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 40% own cats. You sample 140 women, and 85% own cats. Find the test statistic, rounded to two decimal places.

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…

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. how many randomly selected air passengers must you​ survey? assume that you want to be 90% confident that the sample percentage is within 3.5 percentage points of the true population percentage. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= Round to the nearest integer.

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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.

A company generally purchases large lots of a certain kind of electronic device. A method is used that rejects a lot if 3 or more defective units are found in a random sample of 100 units. (a) What is the probability of rejecting a lot that is 2% defective? (b) What is the probability of accepting a lot that is 4% defective? (a) The probability of rejecting a lot that is 2% defective is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer.

The US population is 13% African American.  If you were to take a SRS of 500 Americans, below what proportion will we find 50% of our sample proportions?

Biologists caught and measured 215 fish from the northern Atlantic Ocean. The lengths of the fish (in cm) are summarized in the histogram. 40 35 30 25 20 15 10 5 15 30 45 60 75 90 105 120 length of fish (cm) About what percentage of fish caught in this study had lengths between 45 cm and 75 cm? % Frequency

The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats this month and find that 36 of them adopted cats. What is the sample proportion (p-bar)? Round your answer to 2 decimal places.