MAT 210 Unit 5 Milestone 5 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES VERIFIED ANSWERS ALREADY GRADED A+.

Adam tabulated the values for the average speeds on each day of his road trip as 60.5, 63.2, 54.7, 51.6, 72.3, 70.7, 67.2, and 65.4 mph. He wishes to construct a 98% confidence interval. What value of t* should Adam use to construct the confidence interval? Answer choices are rounded to the thousandths place. ● 2.517 ● 2.896 ● 2.998 ● 4.489 RATIONALE Recall that we have n = 8, so the df = n-1 = 7. So if we go to the row where df = 7 and then 0.01 for the tail probability, this gives us a value of 2.998. Recall that a 98% confidence interval would have 2% for the tails, so 1% for each tail. We can also use the last row and find the corresponding confidence level. CONCEPT How to Find a Critical T Value 2 The data below shows the heights in inches of 10 students in a class. Student Height, in inches Student 1 53 Student 2 52.5 Student 3 54 Student 4 51 Student 5 50.5 Student 6 49.5