# Multiple Choice Question Consider the following sample: 16, 13, 10, 17, 16, 14, 5, 12, 15,...

###### Question:  Multiple Choice Question Consider the following sample: 16, 13, 10, 17, 16, 14, 5, 12, 15, 8, 9, 10, 15, 22, 8. Calculate the variance and interquartile range of the sample, respectively. A. 19.38; 7 B. 15.7; 7 C. 4.40; 7 D. 19.38; 7.5 E. 19.38; 6.5 Multiple Choice Question Assume that the monthly rainfall in Ottawa is normally distributed with mean 35.4 inches and standard deviation 4.2 inches. A research is conducted at the university of Ottawa for 10 months. Let D = Xı - X10 be the difference of the rainfall in month 1 and in month 10. Compute the mean and the standard deviation of D, respectively. Assume that monthly rainfall are independent. A. 0; 8.4 B. 0; 5.9 C. 0; 0 D. -35.4; 5.9 E. -35.4; 8.4
Multiple Choice Question Consider the following study that in a random sample of 100 houses in Toronto, 23 are heated by electricity. Construct a 90% confidence interval for the proportion of houses in Toronto that are heated by electricity. A. (0.1608, 0.2992 B. (0.1508, 0.2992] C. (0.0, 1.0) D. (0.1608, 0.3145) E. none of the above

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