(ANSWER) Math 225N-Week 6 Assignment Point Estimates Margins of Error and Confidence Intervals - Essay Prowess

(ANSWER) Math 225N-Week 6 Assignment Point Estimates Margins of Error and Confidence Intervals

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Week 6 Assignment Point Estimates Margins of Error and Confidence Intervals

Question 1

A random sample of registered voters were asked about an issue on the ballot of an upcoming election. The proportion of those surveyed who plan to vote “Yes” on the issue is 0.54, with a margin of error of 0.06.

Construct a confidence interval for the proportion of registered voters that plan to vote “Yes” on the issue.

Question 2

A technician randomly sampled repair logs for computers at a university. He wanted to find out how many times the computers were repaired. The proportion of computers that were repaired more than three times in the last two years was 0.24, with a margin of error of 0.03.

Construct a confidence interval for the proportion of university computers that were repaired more than three times in the last two years.

Question 3

Randomly sampled employees at an office were asked to take part in a survey about overtime. The office manager wanted to find out how many employees worked overtime in the last week. The proportion of employees that worked overtime was 0.83, with a margin of error of 0.11.

Construct a confidence interval for the proportion of employees that worked overtime in the last week.

Question 4

Amy, a nature photographer, randomly sampled photographs she took within the last year. She wanted to find out how many of her photographs contained flowers. The proportion of photographs that had flowers was 0.61, with a margin of error of 0.04.

Construct a confidence interval for the proportion of her photographs taken within the last year contained flowers.

 

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