Question
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;
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)
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