II. The Dean of Arts and Sciences wants to evaluate student opinions on online courses. A small survey of 13 students asked them to rate their experiences online from 1(Bad) to 5(Great). 5 5 5 5 4 4 4 4 4 4 2 2 1 a) Based on the sample data above, what is the population mean estimator value for student experience? b) Construct a confidence interval with a 99% confidence for this data.)
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- A professor wants to know which type of instructional mode students had more satisfaction. The professor randomly selected n = 5 students from each of the following types of classes: online only, hybrid, and face-to face only. Student were given a satisfaction survey. Are their differences in student satisfaction among the different instructional modes. The data are below: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3 Which of the following is the appropriate statistical conclusion? According to the ANOVA, there was an overall significant difference among the three instructional modes. However, there was not a significant differcene between any two instructional modes using the Tukey's post hoc test. According to the ANOVA, there was an overall significant difference among the three instructional modes. There was were significant differcene between all two pairs of instructional modes using the Tukey's post hoc test. According…The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level, and assuming that the sample sizes of 800 men and 300 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree Women who disagree 556 250 244 50 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. Ho: The proportions of agree/disagree responses are the same for the subjects interviewed by men and the subjects interviewed by women. : The proportions are different. Hi: O B. Ho: The proportions of agree/disagree responses are different for the subjects interviewed by men and the subjects interviewed by women. H1: : The proportions are the same. Ho: The response of the…Please see below. I am only given one opportunity at this. Please help!! Successful hotel managers must have personality characteristics often thought of as feminine (such as "compassionate") as well as those often thought of as masculine (such as "forceful"). The Bem Sex-Role Inventory (BSRI) is a personality test that gives separate ratings for female and male stereotypes, both on a scale of 1 to 7. A sample of 148 male general mangers of three-star and four-star hotels had mean BSRI femininity score of 5.29 with a SD of 0.78. The mean score for the general male population is μ=5.19. Do hotel managers on the average differ significantly in femininity score from men in general? A 2-sample test for proportions B z-test for proportions C 2-sample test for means D t-test for means E z-test for means
- The number ofunhealthy days based on the AQI (Air Quality Index)for a random sample of metropolitan areas is shown.Construct a 90% confidence interval based on the data.60 12 5 42 24 36 94 6 15 43Good Day , Please assit with the following question : John is interested in whether there is a relationship between gender and attitudes towards flogging children. He asked persons "Do you think that parents should be allowed to flog their children ?" The resulst are shown in the table below : Flogging Gender Yes No Not Sure Men 15 5 3 Women 20 10 7 Conduct a test , at 3% significance level , to determine whether gender and attitudes towards flogging were related. A) State the null and alternative hypotheses for this test . B) Create a table showing the expected frequencies if gender and flogging were independent (not related) C) What proportion of the expected frequencies are less than 5? How does this affect the validity of the test ? D) Given that the chi-square test statistic, X2 , is 0.7554, estimate the p-value for this test . E) State the conclusion for the test . Give reason for your answer . Thank you in advace and looking forward to hearing form…A marketing agency wanted to determine if a new commercial changed people's opinion about a company. They recruited n=30 participants to watch the commercial. First, everyone was givien a survey to determine their attitudes toward the company. Then, everyone watched the new commercial. Finally, they were given the same survey again and asked about their attitudes toward the comapny after seeing the commercial. The agency wanted to see if attitudes were changed by the commercial. What statistical test should they use?
- State the conclusion for the test. Give reason for your answer.The data given below gives the marks scored by six second year students taking BSc. Engineering: 87, 65,73, 56, 95 and 62. Construct a 95% confidence interval for the students’ mean weight.The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level, and assuming that the sample sizes of 900 men and 400 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree 625 330 Women who disagree 275 70 Compute the test statistic, rounding to three decimal places. Find the critical value(s). (Round to three decimal places) What is the conclusion based on the hypothesis test?
- 1. The data in the file represent egg and cheese symbolizes the total fat, in grams per serving, for a sample of 20 egg and cheese sandwiches from a fast food restaurant. The data are as follows: 7 8 3 5 15 21 22 24 18 33 23 31 25 19 29 29 29 30 41 55 1. Find the mean, mode and the median. 2. Construct 95% confidence interval for the population mean total fat, in grams preserving.The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.Given the following: Sample Mean = 84.3 Population Variance = 144 Sample size = 35 a. Calculate a 90% confidence interval for the mean. Interpret this interval. b. Calculate a 99% confidence interval for the mean. c. Explain the relationship between Confidence Levels and the resulting intervals.