Question

In: Statistics and Probability

2. A researcher for Netflix wants to know if people have different preferences for two shows:...

2. A researcher for Netflix wants to know if people have different preferences for two shows: Friends and The Office.  The researcher recruits 7 people.  Each person watches five minutes of Friends and rates the show on a scale of 0-10, where 0 means they hate it and 10 means they love it.  Then each person watches five minutes of The Office rates the show on a scale of 0-10.  Assume that you are working at the .05 level of significance. The researcher obtains the following data:

Subject

Rating of Friends

Rating of The Office

1

7

10

2

2

1

3

4

6

4

9

7

5

5

4

6

1

5

7

6

8

  1. State the appropriate null and alternative hypotheses (in symbols, referring to the population means).       
  1. Identify the critical value(s).

  1. Calculate  .

  1. Calculate the t statistic.  (The appropriate standard error that you need in the denominator when you compute t is 0.87.)
  1. State your decision about the null hypothesis.
  1. State the conclusion in terms of the alternative hypothesis (research question).
  1. Compute Cohen’s d as an estimate of the effect size.

Solutions

Expert Solution

Good luck with your studies!!!


Related Solutions

A researcher wants to know if the proportion of people that prefer whiskey to wine person...
A researcher wants to know if the proportion of people that prefer whiskey to wine person instruction is the same at three local bars. A sample of people at each bar was asked about their preference. The data collected is below. Anglelos Romans Guys WHiskey 197 212 133 Wine 23 33 10 Perform the test of whether the proportions of preference are the same for each bar. Your answer must include each of the following parts: a. What hypotheses are...
People of different countries have different value orientations that cause variation in preferences for products and...
People of different countries have different value orientations that cause variation in preferences for products and brands. For this discussion forum: select ONE of Hofstede's dimensions or ONE of Schwartz's Cultural Values (from documents distributed & posted on Moodle) describe/briefly summarize the dimension or type, apply the dimension or type to a particular culture (i.e. a country, a subculture, a racial group, and ethnic group) and state how the dimension/type relates to consumption and consumer behavior. In other words, does...
Question 3 part 1: A researcher wants to know whether Aurors (magical police) have different drink...
Question 3 part 1: A researcher wants to know whether Aurors (magical police) have different drink preferences than the general wizarding population (these are known from prior research). He takes a sample of n = 300) Aurors and asks each one what their favorite drink is (see the table below). The goal was to see whether Aurors’ preferences differed from those of the general population. Assume all assumptions are met. Do all hypothesis testing for this part of question 3...
A researcher is interested in how music can impact exercise. She wants to know if different...
A researcher is interested in how music can impact exercise. She wants to know if different types of music affect how many pushups a group of adolescents can do. She randomly assigns 20 adolescents to one of three groups: control (Other usual sounds you would hear at a gym), pop music, or hip-hop. Participants listen to their respective tracks starting 2 minutes before an assistant waves their arm to begin. The research assistant counts the number of pushups each participant...
A researcher wants to know whether or not a literacy intervention is really helping people read more proficiently.
A researcher wants to know whether or not a literacy intervention is really helping people read more proficiently. She gives a sample of students a pre-test before they start the intervention and then a post-test when they complete it. Conduct a Dependent-Samples t-test using the data below to test the hypothesis that this intervention works.                     Pre-test Post-test   4 10   3 8   4 7   5 10   3 7   4 8 Mean 3.833 8.333...
A political polling company wants to know if there are differences among people of different political...
A political polling company wants to know if there are differences among people of different political parties with respect to their views on a bill recently proposed in Congress. The company conducted a survey of 300 people and got the following results. Do the results support the hypothesis that there are differences among people in different political parties regarding their views on this bill? (Use a = 0.10) Republicans Democrats Independents Strongly Agree 50 10 20 Agree 20 10 15...
Question 6: Fizz! Fizz! 6. A researcher wants to know what type of soda people prefer....
Question 6: Fizz! Fizz! 6. A researcher wants to know what type of soda people prefer. She asks 100 people if they prefer a cola from Company A or a lemon lime drink from Company B. Identify the observational unit(s) and variable(s) for this study.
A developer wants to know if the houses in two different neighborhoods were built at roughly...
A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample​ (in years). Assume that the data come from a distribution that is Normally distributed. Complete parts a through c below. 1 2 67 32 55 45 49 37 66 50 54 40 47 60...
A developer wants to know if the houses in two different neighborhoods were built at roughly...
A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample​ (in years). Assume that the data come from a distribution that is Normally distributed. Complete parts a through c below. ​a) Find a 95% confidence interval for the mean​ difference, μ1−μ2​, in ages of...
A developer wants to know if the houses in two different neighborhoods were built at roughly...
A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample​ (in years). Assume that the data come from a distribution that is Normally distributed. Neighborhood 1: 50, 68, 65, 52, 53, 54 Neighborhood 2: 33, 32, 44, 38, 54, 51 ​a) Find a 95​%...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT