Two dice are rolled and the probability distribution table f
Two dice are rolled and the probability distribution table for the possible sums 2, 3, 4… 12 is given below. What is the mean (expected value) of the distribution of sum?Question 1 options:μ = 6μ = 7μ = 8μ = 5Question 2 (1 point) SavedState which sampling method was used in the following example: A searcher divides a group of students according to gender and major field of study. Then she randomly selects 10 students from each group to answer a survey.Question 2 options:ClusterStratifiedRandomSystematicQuestion 3 (1 point) SavedIn how many different ways can 5 people be arranged in a line?Question 3 options:481212060Question 4 (1 point) The number of meteorites found in 10 states of the United States are 88, 46, 163, 295, 29, 214, 137, 77, 47, and 38. Find the mean and median number of meteorites.Question 4 options:μ = 80.5 and Med = 112.2μ = 163 and Med = 88μ = 214 and Med = 77μ = 113.4 and Med = 82.5Question 5 (1 point) SavedSuppose Bryan spends a whole day with COVID-19 infected people in his small lab room. The chance that he contracts the virus is 50%. If he spends two consecutive days with COVID-19 infected people in his lab, what is the chance that he would contract the virus?Question 5 options:75%50%100%25%Question 6 (1 point) The scores from the last 10 years for the U.S. Bowling Congress Championships are shown below for men and women. Find the standard deviations for each data set and determine which data set is more variable.Question 6 options:σmen = 46.14, σwomen = 80.96, and men’s score is more variable that of the women.σmen = 32.05, σwomen = 29.54,and comparison cannot be made between the data sets.σmen = 45.02, σwomen = 45.02, and men’s and women’s score are equally variable.σmen = 20.05, σwomen = 23.54, and women’s score is more variable that of the men.Question 7 (1 point) Determine the null hypothesis H0 and the alternative hypothesis H1 for the following case study: The national unemployment rate in a recent month was 9%. An elected official believes that the unemployment rate in his city is greater than or equal to the national average and conducts a statistical test to check his claim.Question 7 options:H0: μ 0.09H0: μ > 0.09H1: μ 0.09H1: μ < 0.09H0: μ 0.09Question 8 (1 point) Assume the probability of event E is as follows: P(E) = 0.72. Which of the following statements is true?Question 8 options:Event E can never occur.There is a high chance of event E occurring.Event E always occurs.There is a low chance of event E occurring.Question 9 (1 point) The sample space for the genders of a randomly selected group of 3 children is given below. Determine the probability that a randomly selected group of three children will contain both genders (at least one girl and one boy).S = {MMM, MMF, MFM, MFF, FMM, FMF, FFM, FFF }Question 9 options:112{‘version’:’1.1′,’math’:’12’}34{‘version’:’1.1′,’math’:’34’}14{‘version’:’1.1′,’math’:’14’}Submit Quiz3 of 9 questions saved
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