# Points can she conclude that the distribution in

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Can she conclude that the distribution in residence is different today at a 0.05 level of significance? A. yes because the p-value = .0009 B. no, because the p-value = .0009 C. yes because the p-value = .0172 D. no because the p-value = .0172 Answer Key: Feedback: NW Oregon SW Oregon Central Oregon Eastern Oregon Observed Counts 3109 902 244 102 Expected Counts 4357*.727 = 3167.539 4357*.207= 901.899 4357*.048= 209.136 4357*.028= 121.996 Use Excel to find the p-value =CHISQ.TEST(Highlight Observed, Highlight Expected) p-value is < .05, Reject Ho. Yes, this is significant. C
1.0/ 1.0 Points Question 4 of 20 A company that develops over-the-counter medicines is working on a new product that is meant to shorten the length of sore throats. To test their product for effectiveness, they take a random sample of 110 people and record how long it took for their symptoms to completely disappear. The results are in the table below. The company knows that on average (without medication) it takes a sore throat 6 days or less to heal 42% of the time, 7-9 days 31% of the time, 10-12 days 16% of the time, and 13 days or more 11% of the time. Can it be concluded at the 0.01 level of significance that the patients who took the medicine healed at a different rate than these percentages? Hypotheses: H 0 : There is __________ in duration of a sore throat for those that took the medicine. H 1 : There is __________ in duration of a sore throat for those that took the medicine. Select the best fit choices that fit in the two blank spaces above.
1.0/ 1.0 Points Click to see additional instructions A 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? Enter the test statistic - round to 2 decimal places. 1.0/ 1.0 Points B. a difference, no difference C. no difference, no difference D. a difference, a difference Answer Key: A Question 5 of 20 Click to see additional instructions A 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? Enter the test statistic - round to 2 decimal places. Test statistic= 10.53 Answer Key: 10.53 Feedback: Spring Summer Fall Winter Observed Counts 27 39 31 53 Expected Counts 150*.25 = 37.5 150*.25 = 37.5 150*.25 = 37.5 150*.25= 37.5 Test Stat =