Answer keya question 7 of 20 10 10 points a drivers

This preview shows page 7 - 12 out of 26 pages.

Answer Key:A
Question 7 of 201.0/ 1.0 PointsA Driver’s Ed program is curious if the time of year has an impact on number of car accidents in the U.S. They assume that weather may have a significant impact on the ability of drivers to control their vehicles. They take a random sample of 150 car accidents and record the season each occurred in. They found that 27 occurred in the Spring, 39 in the Summer, 31 in the Fall, and 53 in the Winter. Can it be concluded at the 0.05 level of significance that car accidents are not equally distributed throughout the year?Hypotheses:H0: Car accidents ________ equally distributed throughout the year.H1: Car accidents ________ equally distributed throughout the year.Select the best fit choices that fit in the two blank spaces above.
Question 8 of 201.0/ 1.0 PointsStudents at a high school are asked to evaluate their experience in the class at the end of each school year. The courses are evaluated on a 1-4 scale – with 4 being the best experience possible. In the History Department, the courses typically are evaluated at 10% 1’s, 15% 2’s, 34% 3’s, and 41% 4’s. Mr. Goodman sets a goal to outscore these numbers. At the end of the year he takes a random sample of his evaluations and finds 10 1’s, 13 2’s, 48 3’s, and 52 4’s. At the 0.05 level of significance, can Mr. Goodman claim that his evaluations are significantly different than the History Department’s?Hypotheses:H0: There is _________ in Mr. Goodman’s evaluations and the History Department’s.H1: There is _________ in Mr. Goodman’s evaluations and the History Department’s.Select the best fit choices that fit in the two blank spaces above.
Part 2 of 4 - Chi-Square Distribution for Independence3.0/ 3.0 PointsQuestion 9 of 201.0/ 1.0 PointsThe data presented in the table below resulted from an experiment in which seeds of 4 different types were planted and the number of seeds that germinated within 4 weeks after planting was recorded for each seed type. At the .05 level of significance, is the proportion of seeds that germinate dependent on the seed type?Seed TypeObserved FrequenciesGerminatedFailed to Germinate1399254343886345742What is the Expected Count for Seed Type = 3 and a Germinated Seed?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture