I need help with these questions, don't need help with all explanations. Thank you.

Question 22 v of 40 Step 1 of1 03:44:55 4.7 (b) Ho: H 2 4.7 vs. H1: H 5 Select the best answer. Answer 10 Points Tables Keypad Keyboard Shortcuts O (a ) O ( b ) O ( C ) O (d)Question 27 of 40 Step 1 of 1 03:43:07 The range of critical values that indicates that there is a significant difference between the value of a sample statistic and the proposed parameter value is referred to as the rejection region or the critical region. True or false? Answer 10 Points Tables Keypad Keyboard Shortcuts True O FalseQuestion 28 - of 40 Step 1 of 1 03:42:41 Please view the problem below. What will your decision be for the appropriate set of hypotheses for this situation if you were trying to establish whether there was a significant difference between the respective population proportions? A survey was done on the issue of whether alcohol should be sold in the stores on Sundays in two adjoining counties. The following results were obtained by the researcher. County Number of Voters favoring Surveyed Voters the proposal 1 600 220 N 400 160 Let p, represent the population proportion for County 1 and let p2 represent the population proportion for County 2. Let p, represent the sample proportion for County 1 and let p2 represent the sample proportion for County 2. (a) Ho: P1 - P2 SO vs. H1: P1 - P2 > 0 (b) Ho: P1 - P2 = 0 vs. H1: P1 - P2 = 0 (c) Ho: P1 - P2 uo (where uo is a specified value of u) at a given significance level of a, with large samples (n > 30) and unknown population variance, then Howill be rejected if the computed test statistic z is such that (a) z> Za. ( b ) z Za. (d) z 0 QueStion 36 v of 40 Step1 of 1 03:40:05 5 and n(1 - p) >5). True or false? Answer 10 Points Tables E Keypad Keyboard Shortcuts Cl True 2"; False QueStion 37 v of 40 Step1 of1 03:39:49 9 A mathematics professor wants to determine whether there has been a signicant difference in the final percentage averages between the Fall and Spring semesters (semester I and semester II respectively) of his elementary Business Statistics classes he taught for the past 25 years. During this time, the professor taught very large sections ofthe courses in large lecture theaters. In a random sample of 62 students from semester I, the mean of the final percentages was 80 with a standard deviation of 4. In a random sample of 69 students from semester II, the mean of the final percentages was 74 with a standard deviation of 6. If the final percentages from semesters | and II are assumed to be normally distributed, the point estimate for the difference between the means of the two population (semester I - semester II) is Answer 10 Points @ Tables E Keypad Keyboard Shortcuts '36.'|6 C73 C6 Question 38 v of 40 Step1 of1 03:39:32 5) When testing for the difference between two population means, if the population variances are unknown and the sample sizes from the populations are both greater than to 30, then the associated test statistic will be approximately normally distributed with a mean of O and a standard deviation of 1. True or false? Answer 10 Points % Tables E Keypad Keyboard Shortcuts C\" True \"V False QueStion 39 v of40 Step1 of1 03:39:15 as An investor wants to decide if he should invest in a certain stocks His null hypothesis is H0: The price of the stock will at least retain its current value in the near future and his alternative hypothesis is H1 : The price of the stock will decrease in the near future. What will happen if a Type I error is committed? Answer 10 Points % Tables E Keypad Keyboard Shortcuts CF The investor did not invest in the stock and the value of the stock decreased. CT The investor did not invest in the stock and the value of the stock increased. CT The investor invested in the stock and the price of the stock increased. CT The investor invested in the stock and the price of the stock decreased