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Main Menu Contents Course Contents Assignments Summer 2022 Assignment 1 Question 3 (7 total [83] Steve recorded the number of miles per gallon achieved by his truck on 9 days after performing a number of modifications with no concern for fuel efficiency. He wants to know whether his truck is performing worse than the manufacturer stated miles per gallon of 18. The following table gives the MPGs recorded by Steve: Mies Per Gallon 18.86 19.95 19.22 19.95 17.15 19.99 17.10 18.37 19.62 Which of the following would be Steve's Hypothesis test? O Ho: u 18 and H: > 18 O Ho: -18 and H: 18 O Ho: -18 and Hu2 181 OH: 18 and Ha: u 18 (11 Submit Answer Tries 0/1 What is the correct distribution for this test? O Normal Distribution Ox² distribution Ot distribution OF distribution p(x)) Submit Answer Tries 0/1 MacBook Pro
What are the degrees of freedom? [13] Submit Answer Tries 0/3 Calculate the sample mean [1]] Submit Answer Tries 0/3 Calculate the sample variance [1 p(x)] Submit Answer Tries 0/3 Calculate the test statistic [1 pt(s)] Submit Answer Tries 0/3 As though it was a two alternative test, what is the 90% confidence interval for the MPG? Upper bound: Lower bound: [1 p(x)) Submit Answer Tries 0/3