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3. A random sample of 15 married couples has their heights measured with the following results....

3. A random sample of 15 married couples has their heights measured with the following results. x = man’s height, y = woman’s height. men (in) 63 73 67 69 65 75 72 77 66 69 80 79 85 74 68 women (in) 63 68 66 67 66 73 67 68 69 66 74 72 77 62 66 a) Find the value of the correlation coefficient r. b) Is r significant at the 0.05 level of significance? Why or why not?

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