PART A - no explanations required - highlight answers.

A chi-square goodness-of-fit test produces a P-value of 0.06. Which of the following conclusions is appropriate? O Reject the alternate hypothesis at a = 0.05 level. O Fail to reject the null hypothesis at a = 0.05 level. O Reject the null hypothesis at a = 0.05 level. O Accept the null hypothesis at a = 0.05 level.According to a national study, nearly 70% of college students feel stressed about their current financial situation. The study reported that students are primarily using the means listed below to pay for college tuition. Loans Scholarships Family Jobs Savings Other Percent 35 34 19 6 3 3 (a) How many degrees of freedom would be appropriate to compare observed versus expected results in ways that students primarily pay for college? (b) Determine whether the following is true or false. One way to state the alternative hypothesis in a study comparing observed versus expected results in ways that students primarily pay for college is that the null hypothesis (that all categories are equal) is not true. At least one of the population category proportions differs from the corresponding hypothesized value. O True O FalseA recent Gallup poll stated that more than I' in 10 Americans believe that the nation would be better off if the leaders of the country.r paid more attention to the wants and desires of its citizens. The expected percentages from the Gallup poll are listed below. - Better Off Worse D\" No Difference F3 22 3 2 Percent You want to test to see if college students share the same opinions, so vou ask the same question to a random sample of 140 students from a local universitv. Of all the students surveved, 114 responded "better off." {all Determine the expected counts for each categorv response. Better OFF Worse OFF No Difference No Opinion {bl Fill in the blanlcs. The chi-square test statistic is calculated by taking the sum across all categories of the square of the count minus the count all divided bv the count. {c}! The observed minus the expected value for those that rated "better off" to be substituted into the equation for the chi-square test statistic is I.vhich of the following? -:T:- 114 {41.10 >4 140] "1': 114 {11.30 )4 14s] "1': 114 {0:13 3-: 14o] "1': 114 22 For a chi-square goodnessoft test, how are the degrees of freedom computed? D The number of categories plus one. D The number of categories minus three. 0 The number of categories minus two. D The number of categories minus one. How are expected frequencies computed for goodness-of-fit tests? O Divide the proportion of the sample size for each category by the total sample size. O Take the proportion of the sample size for each category designated by the proposed distribution. O Take the proportion of the sample size for each category from the observed data. O Divide the total sample size by the sample size for each category