5) Assume that a sample is used to estimate a population proportion p. Find the margin of error that corresponds

to the given 90% confidence; n = 300, x = 140. Round the margin of error to four decimal places.

(3 marks)

6) 32 randomly picked people were asked if they rented or owned their own home, 8 said they rented. Obtain a

point estimate of the proportion of home owners. Round the point estimate to the nearest thousandth.

(2 marks)

7) A multiple choice test consists of 50 questions. Each question has 5 possible answers of which one is correct.

If all answers are random guesses, estimate the probability of getting half of the test correct.

(5 marks)