1.The data given to the right includes data from 39 candies, and 8 of them are red. The company that makes the candy claims that 34% of its candies are red. Use the sample data to construct a 95% confidence interval estimate of the percentage of red candies. What do you conclude about the claim of 34%?

Construct a 95% confidence interval estimate of the population percentage of candies that are red.

%

(Type integer or decimal rounded to one decimal place asneeded.)

2.In a study of government financial aid for collegestudents, it becomes necessary to estimate the percentage offull-time college students who earn abachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.02 margin of error and use a confidence level of 95%.

Assume that nothing is known about the percentage to be estimated.

n= (Round up to the nearestinteger.)

3.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 yousurvey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage.

Assume that nothing is known about the percentage of passengers who prefer aisle seats.

n= (Round up to the nearestinteger.)

4.The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90% confident that his estimate is within eight percentage points of the true populationpercentage?

Assume that nothing is known about the percentage of adults who have heard of the brand.

n= (Round up to the nearestinteger.)