Question 10 The following two-way table describes the preferences in movies and fast food restaurants for a random sample of 100 people. McDonald's Taco Bell Wendy's Iron Man 20 11 9. Dispicable Me 11 Harry Potter 9. 8. 15 12 What percent of the Iron Man lovers also like Taco Bell? a) O 40% b) O 20% 9% d) O 28% e) 16% CCR2U16VM04::1/5/2022 2:49:45 PM ©
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- A veterinarian keeps track of the types of animals treated by an animal clinic. The following distribution represents the percentages of animals the clinic has historically encountered. Animal type Dogs Cats Livestock Birds Other Percent 61% 22% 8% 6% 3% If the animal clinic treats 230 animals in a month, how many of each animal type would be expected? Animal type Dogs Cats Livestock Birds Other Вxреcted 61 22 8. 9. 3) Animal type Dogs Cats Livestock Birds Other Еxpected 122 44 16 12 Animal type Dogs Cats Livestock Birds Other Еxpected 51 18 14 7. 140 Animal type Livestock Birds Other Dogs Cats Еxресted 46 46 46 46 46 Animal type Dogs Cats Livestock Birds Other Expected 140,3 50.6 18.4 13.8 6.9 E.A television station wishes to study the relationship between viewership of its 11 p.m. news program and viewer age (18 years or less, 19 to 35, 36 to 54, 55 or older). A sample of 250 television viewers in each age group is randomly selected, and the number who watch the station’s 11 p.m. news is found for each sample. The results are given in the table below. Age Group Watch11 p.m. News? 18 or less 19 to 35 36 to 54 55 or Older Total Yes 37 46 59 83 225 No 213 204 191 167 775 Total 250 250 250 250 1,000 (a) Let p1, p2, p3, and p4 be the proportions of all viewers in each age group who watch the station’s 11 p.m. news. If these proportions are equal, then whether a viewer watches the station’s 11 p.m. news is independent of the viewer’s age group. Therefore, we can test the null hypothesis H0 that p1, p2, p3, and p4 are equal by carrying out a chi-square test for independence. Perform this test by setting α = .05. (Round your answer to 3 decimal places.)…A town has to choose among three candidates for mayor: A, B, or C. We want to know whether the preference for mayor has no relation to the socio- economic class of the voters, classified as Rich or Poor. The opinions of a random sample of 500 citizens are shown in the table below. What is your conclusion? Use a level of significance of 0.05. Economic class of Preferred Candidate voter B 140 60 Poor Rich A 160 40 с 40 60
- A television station wishes to study the relationship between viewership of its 11 p.m. news program and viewer age (18 years or less, 19 to 35, 36 to 54, 55 or older). A sample of 250 television viewers in each age group is randomly selected, and the number who watch the station’s 11 p.m. news is found for each sample. The results are given in the table below. Age Group Watch11 p.m. News? 18 or less 19 to 35 36 to 54 55 or Older Total Yes 49 59 61 84 253 No 201 191 189 166 747 Total 250 250 250 250 1,000 (a) Let p1, p2, p3, and p4 be the proportions of all viewers in each age group who watch the station’s 11 p.m. news. If these proportions are equal, then whether a viewer watches the station’s 11 p.m. news is independent of the viewer’s age group. Therefore, we can test the null hypothesis H0 that p1, p2, p3, and p4 are equal by carrying out a chi-square test for independence. Perform this test by setting α = .05. (Round your answer to 3 decimal places.)…Review Later Question 10 The following two-way table describes the preferences in movies and fast food restaurants for a random sample of 100 people. McDonald's Taco Bell Wendy's Iron Man 20 15 Dispicable Me 10 Harry Potter 11 7 8 12 12 What percent of the Dispicable Me lovers also like Taco Bell? a) O 18% b) O 12% 39% d) 26% O 40% Review LaterFor a class project, a group of students were curious if there was a connection between color preferences and movie preferences (e.g., if people who liked brighter colors preferred uplifting/funny movies and people who liked darker colors liked dramas). Participants in the study were first asked them to select which color they most preferred, choosing between: red, blue, yellow, or green. Next, participants watched the movie Everything Everywhere All at Once and were asked to give it a rating between 0 and 100. Later, the students tested whether there was a difference in rating based on color preference. Which of the following analyses would BEST apply to this study?
- "Bluth's Original Frozen Banana Stand" is a frozen banana stand founded in 1953 by George Bluth. They offer multiple types of chocolate that you can have your frozen banana dipped in, and they also offer multiple different toppings for your frozen banana. One day when stand employee Michael was working, he wondered whether or not there was a relationship between what customers had their bananas dipped in (milk chocolate, white chocolate, or dark chocolate) and their choice of topping (plain, walnuts, or sprinkles). He recorded the choices of each for 90 different customers, and the resulting data can be seen in the table below. Which cell has the highest Chi Square contribution? Chocolate milk milk milk white white white dark dark dark walnuts, milk Osprinkles, white walnuts, dark O plain, dark Topping plain walnuts sprinkles plain walnuts sprinkles plain walnuts sprinkles Freq. 15 4 11 7 13 10 14 10In a recent study, a scientist was interested in investigating whether there is a significant difference in the number of sleeping hours in different moon phases: waxing crescent, full moon, and waning crescent. Participants’ number hour of sleep were recorded in the table below. Quality of sleeps (in number of hours) Waxing Crescent Full Moon Waning Crescent 7 8 9 7 8 4 5 4 3 6 5 7 8 9 6 What are the groups being compared? That is, what are the levels of the IV? What is the IV? What is the level of measurement of the IV?A group of 40 students in a library was sampled and the type of laptop they were using was examined. It was found that 16 were using HP, 10 were using Lenovo, 6 were using Dell, 5 were using Microsoft, and 3 were using Apple. a. Use the given information to complete the following table: Laptop Type Frequency Relative Frequency HP % Lenovo c. What proportion of the students use HP? b. How many degrees will the segment representing "Lenovo" have on a pie chart? % d. What is the relative frequency for Apple? Dell Microsoft Apple
- You conduct a study to determine whether men and women have different colour preferences when buying a new car. In a questionnaire, you ask respondents to indicate their sex (male/female) and which of four possible colours they would choose when buying a new car. You collect the following data: Male Female Total White 20 14 34 Blue 13 6 19 Red 10 21 31 Green 22 6 28 Total 65 47 112 You compute the test statistic and the result is 14.16 Test at the .01 level of significance whether this study has provided sufficient evidence that men and women have different colour preferences when buying a new car. (State your conclusion and explain how you arrived at that conclusion.)A survey was taken on course selection and gender. The results are represented in the table below. Воys Girls ТОТAL Band 27 17 44 Team Sports 64 46 110 Neither 13 22 ТОТAL 104 72 176 What percentage of those surveyed are girls? Round to the nearest percent. % are girls.What is your favorite color? A large survey of countries, including the United States, China, Russia, France, Turkey, Kenya, and others, indicated that most people prefer the color blue. In fact, about 24% of the population claim blue as their favorite color.t Suppose a random sample of n = 59 college students were surveyed and r = 8 of them said that blue is their favorite color. Does this information imply that the color preference of all college students is different (either way) from that of the general population? Use a = 0.05. A USE SALT (a) What is the level of significance? State the null and alternate hypotheses. O Ho: p = 0.24; H,: p + 0.24 O Họ: p = 0.24; H: p 0.24 (b) What sampling distribution will you use? O The standard normal, since np > 5 and ng > 5. The standard normal, since np 5 and ng > 5. The Student's t, since np < 5 and ng < 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic.…