Give an interval for all the levels of significance at which we would have to test in order to conclude that the average cost has increased to more than $30
Give an interval for all the levels of significance at which we would have to test in order to conclude that the average cost has increased to more than $30
Please only answer the uestion that is in bold, the one below is the first part of the problem (alread know how to do it). Thank you!
A student suspected the average cost of a Saturday night date is now more than $30.00. To test her hypothesis, she randomly selected 16 men from the dormitory and asked them how much they spent on a date last Saturday. She found that the average cost was $31.17. The standard deviation of the sample was $5.51. Is there enough evidence to support her claim at the 5% level of significance? Assume the sample is approximately
Step by step
Solved in 2 steps with 1 images
