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fail to reject the null hypothesis.121 / 1 pts Question 7A manufacturer of automobile transmissions uses two different processes. Management ordered a study of the production costs to see if there is a difference between the two processes. A summary of the findings is shown next.Page 4 of 11Unit 6: Quiz: EC315DLCF2A2016 Quantitative Research Methods11/27/2016
What is the critical value of Fat the 1% level of significance? 1 / 1 pts Question 8Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline that will have the best fuel economy. The four grades are regular, economy, premium, and super premium. The test car made three trial runs on the test track using each of the four grades. The miles per gallon were recorded for each grade. At the 0.05 level, what is the critical value of Fused to test the hypothesis that the miles per gallon for each fuel are the same?1 / 1 pts Question 9Page 5 of 11Unit 6: Quiz: EC315DLCF2A2016 Quantitative Research Methods11/27/2016
A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area A, 9 from Area B, and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level?