28. Which of the following statements does not apply when the hypothesis test leads to a statement such as: "Mean scores obtained by third grade students at James Public School are statistically different than those obtained by the students at John Public School, at .05 level of significance". a. Reject Ho. There is sufficient evidence to conclude that there is a statistical difference in the mean scores between the groups. b. Reject Ho. There is sufficient evidence to conclude that if this study was to be carried out 100 times, on five or fewer occasions the differences that emerged here would be due to sampling error. c. Reject Ho. There is sufficient evidence that in fact both groups were drawn from different populations. d. Reject Ho. The chances that a type 1 error is committed in this study is .05 or less. e. All of the above correctly describe the original statement 29. If a normally distributed random variable has / = 0 and o = 1, then 97.5% of the population values lie above which value of a z-score: a. -1.96. b. +1.96. c. +1. d. -1. e. None of the above is a correct value 30. A study was done to determine the proportion of teenagers who own a car. The population proportion of teenagers who own a car is the: a. statistic b. parameter c. population d. variable 31. The p-value generated is 0.01, and the alpha level is 0.05. The correct conclusion to the analysis would be: a. reject Ho, the differences are not statistically significant b. reject Ho, the differences are statistically significant c. assume HI, the differences are not statistically significant e. none of the above statements are correct 32. Which of the following statements is correct in regards to the role of p-value in hypothesis testing? a. it represents the probability that an outcome of the data will happen purely by chance when the null hypothesis is true b. it can also be referred to as confidence level c. it is compared to alpha to decide whether or not to reject the null hypothesis d. it is compared to the critical value to decide whether or not to reject the null hypothesis e. Only A and C are correctUse the following information to answer the next three questions: Confederation College keeps statistics on the pass rate of students who enroll in math classes. In a sample of 1,795 students enrolled in Math 1A (1st quarter calculus), 1,428 passed the course. In a sample of 856 students enrolled in Math 13 (2nd quarter calculus), 662 passed. In general, are the pass rates of Math 1A and Math 13 statistically the same? Let A = the subscript for Math 1A and B = the subscript for Math 1B. 33. If you were to conduct an appropriate hypothesis test, the alternate hypothesis would be: a. H1: sasaaa = swash b. H1: 939% > 9399513 6- H0: master = yam d. H1: mass a was 34. The Type I error would be to: a. conclude that the pass rate for Math 1A is the same as the pass rate for Math 1B when, in fact, the pass rates are different. b. conclude that the pass rate for Math 1A is different than the pass rate for Math 1B when, in fact, the pass rates are the same. c. conclude that the pass rate for Math 1A is greater than the pass rate for Math 1B when, in fact, the pass rates for Math [A is less than the pass rate for Math 1B. d. conclude that the pass rate for Math 1A is the same as the pass rate for Math 1B when, in fact, the pass rates are the same. 35. The correct decision in regards to the shown data is to: a. reject Ho b. not reject Ho c. There is not enough information given to make \"inferential\" statements about this data set 36. The correlation between body weight of a car and its fuel efciency (measured as miles per gallon) for a sample of 2,012 cars is 0.56. The amount of explained variance is: a. 31% b. 35% c. 56% (1. none of the above