1. An education rehearser claims that at most 5% of working college students are employed as teachers or teaching assistants. In a random sample of 400 working college students, 24 of them are employed as teachers or teaching assistants. Is there enough evidence to support your thinking at = 0.05?

a. Observed test statistic

b. P value (4 decimals)

2. David wants to rent an unfurnished apartment for next semester. He took a random sample of 9 apartments advertised in the local Halifax paper, and recorded the rental rates. The rents (in $ per month) were:

500, 650, 600, 505, 450, 550, 515, 495, 640

a. Construct the 90% confidence interval.