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17. The W.S. Census Bureau collects data on monthly rents of newdy completed apartments in the three W.S. regions yielded the data on monthly rents, in dollars, given as follows alberta Manitoba Ontario 426 277 467 301 324 435 302 497 324 272 a. (It the 107, significance level, do the data provide sufficient evidence to conclude that a difference exists in mean monthly vents among newly completed apartments in the three i.S. regions? ( (losuses: J.5 = 54.58, CU =4.26) 6. Find and interpret a 907, confidence interval for the mean monthly went of newly completed apartments in the Manitoba. ((nowever: 283.71 to 324.79) c. Find and interpret a 95%, confidence interval for the difference between the mean monthly rents of newly completed apartments in the (liberta and Ontario. (answer: 114.25 to 212.3)15. The data on age and price for a sample of Il Crions are displayed as follows age ( x) Price (y ) a. alt the 57, significance level, do the data provide sufficient evidence to conclude that age is useful as a predictor of price for Onions? (answer: J.5 = 7.235, C.V) = 2.262) 6. Verify your decision using regression analysis through a.Nova c. at the 57, significance level do the data provide sufficient evidence to conclude that age and price of Orions are negatively linearly correlated? (answer: J.S = -7.249, ev = 1833) d. Calculate the residuals for the given data using the formula (y - )) and determine at the 5%, significance level, do the data provide sufficient evidence to conclude that the normality assumption for regression inferences is violated by the variables age and price of Orions? ( answer: J.5 = 0.934, e.v = 0.923) 16. ( random sample of 12 tax returns from last year revealed the adjusted gross incomes ( (GJ ), in thousands of dollars as follows 9.7 93.1 33.0 21.2 $1.4 51.1 43.5 10.6 12.8 7.8 181 12.7 at the 5 7, significance level, whether the data provide sufficient evidence to conclude that adjusted gross incomes are not normally distributed. ( answer: J.S = 0908, CV = 0.927)