Question 6 1 pts From a random sample of 30 days, gasoline prices showed an average of $3.63 per gallon. Assume the population standard deviation is $0.71. Find a 99% condence interval for the population mean price of gasoline. 0 (330,396) 0 cannot be determined 0 (357,3.69) O (3.27, 3.99) Question 7 1 pts Cholesterol Contents of Cheese A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of cheese. The estimate must be within 0.5 milligram of the population mean. (a) Determine the minimum sample size required to construct a 95% confidence interval for the population mean. Assume the population standard deviation is 2.8 milligrams. Q 209 O 131 O 121 O 1659 Question 8 1 pts The maximum weights (in kilograms) for which one repetition of a half squat can be performed and the times (in seconds) to run a 10-meter sprint for 12 international soccer players are shown in the attached data table. Maximum weight, x Time, y 175 1.81 185 1.78 150 2.03 205 1.41 155 2.03 190 1.61 180 1.68 160 1.88 185 1.62 185 1.65 155 1.95 175 1.89 Calculate the correlation coefficient "r" for this dataset O 0.73 O -0.73 O -0.95 O 0.95Question 9 1 pts The maximum weights (in kilograms) for which one repetition of a half squat can he performed and the times (in seconds) to run a 10-meter sprint for 12 international soccer players are shown in the attached data table. Maximum weight, x Time, 3; 175 1.81 185 1.78 150 2.03 205 1.41 155 2.03 190 1.61 180 1.68 160 1.88 185 1.62 185 1.65 155 1.95 175 1.89 For this dataset, determine the best t linear regression model and then use this model to predict the time to run a sprint for a soccer player that can lift a weight of 200 kilograms Q 1.41 O 1.51 O 1.61 O 2.01 Question 10 1 pts Travel In a survey of 2230 U.S. adults, 1272 think that air travel is much more reliable than taking cruises. Construct a 95% confidence interval for the population proportion of US. adults who think that air travel is much more reliable than taking cruises. O (0.553, 0.588) O (0.550, 0.591) O (0.543, 0.597) O (0.548 , 0.611)