Question

Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $8.00 $6.00 $3.00 $7.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) $ < μ < $ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Decrease Increase c.) If the Confidence level were 95% instead of 90%, would the range (size) of the Confidence Interval be larger or smaller? Larger Smaller

159

likes797 views

Clarabelle

4.7

52 Answers

b) Decrease
c) Larger

Frequently asked questions (FAQs)

Math Question: What is the probability of rolling a 6 with a fair six-sided die? (

+

What is the probability of getting at least one head in two coin tosses?

+

What is the speed of a car if it covers a distance of 100 km in 2 hours?

+

New questions in Mathematics