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Statistics
Page 5
Question 10 (8 marks)
Independent random samples from normal populations produced the results shown
below:
Sample 1: 5.8, 5.1, 3.9, 4.5, 5.4
Sample 2: 4.4, 6.1, 5.2, 5.7
Required:
a) Calculate the pooled estimator of o2. (2 marks)
b) Test /1 &lt; /2 using a = .10. (4 marks)
c) Find a 90% confidence interval for (M1 - H2). (2 marks)
Question 11 (7 marks)
To decide on the approval of mortgages, a large Canadian bank uses the square
footage and the number of bathrooms in a house to estimate the price of the house. The
estimated regression equation for a particular type of house is as follows:

Step-by-step answer

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