Question: Charter bus records show that in past years, the buses carried an average of 42 people per trip to Niagara Falls. The standard deviation of the population in the past was found to be 8. This year, the average of 10 trips showed a mean of 48 people booked. Assume that the variable (number of people Charter buses carry) is normally distributed.

1. Can one reject the claim, at 10 percent of level of significance (i.e. α = .1), that the average is still the same?
2. Find the 90% confidence interval of the mean.
3. Does the confidence interval interpretation agree with the hypothesis-testing results?

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document