{'3 Moving to another question will save this response. Question 11 An estimated regression equation has the form: 3"": T + 6x1 + 12 .1' . As X2 increases by 1 unit (holding X1 constant), then y is expected to 0 Increase by 6 O Decrease by 6 0 Increase by 12 O Decrease by 12 Q Moving to another question will save this response. Question 13 The assembly time for a product is uniformly distributed between 7 and 9 minutes. The mean and the variance of the assembly time are: 0 8 minutes and 0.33 (minute)2 0 10 minutes and 0.33 (minute)2 0 11 minutes and 1.33 (minute)2 (3' 13 minutes and 1.33 (minute)2 Question 15 1 points Save Answ A car manufacturer advertises that its new 'ultra-green' car obtains on average 100 miles per gallon (mpg). A consumer advocacy group tested a sample of 20 cars. Each car was driven the same distance in similar conditions, and the following results on mpg were recorded. 113, 102, 97, 78, 90, 97, 117, 98, 111, 89, 90, 93, 83, 82, 96, 94, 79, 96, 101, 92 Using Descriptive Statistics of Data Analysis of Excel with a 99% confidence level, the following incomplete output is available: Mean 95 Standard Deviation 10.58 Sample Variance 111.87 Count 20 Confidence Level (99.0%) 6.77 The margin of error of the 99% confidence interval for the mean mpg of all new 'ultra-green' cars is O 1.59 0 5.78 O 2.55 O 6.77An estimated regression equation has the form: 1=7+ 6x, + 12x, As X1 increases by 1 unit (holding X2 constant), then y is expected to O Increase by 6 O Decrease by 6 O Increase by 12 O Decrease by 12Question 5 If the margin of error in an interval estimate of p is 5.8, the interval estimate equals. 02:34 O )'