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4) A factory hiring people to work on an assembly line gives job applicants a test of manual agility. This test counts how many strangely shaped pegs the applicant can fit into matching holes in a one-minute period. The table summarizes the data by gender of the job applicant. Is there sufficient evidence to say that there is a difference in the mean number of pegs that can be placed correctly for male and female applicants? Male Female 50 50 19.39 17.91 2.52 3.39 5) Based upon your answer to question 4, what is the potential error (type | or ll?Name: 2) The Core Plus Mathematics Project (CPMP) is an innovative AP Statistics Two-sample Inference with Means WS approach to teaching math that engages students in group investigations and mathematical modeling. Researches compared 1) The data below show the sugar content (as a percentage of the performances of CPMP students with those taught using a weight) of several national brands of children's and adults' cereals. traditional curriculum in solving word problems. Can CPMP Create and interpret a 95% confidence interval for the difference in students solve word problems better than the students who were mean sugar content. taught with traditional methods? Children's 40.3 55 45.7 43.3 50.3 45.9 53.5 Math program n Sx 43 44.2 44 47.4 44 33.6 55.1 CPMP 320 57.4 32.1 48.8 50.4 37.8 60.3 46.6 Traditional 273 53.9 28.5 Adults' 20 30.2 2.2 7.5 4.4 22.2 16.6 14.5 21.4 3.3 6.6 7.8 10.6 16.2 14.5 4.1 15.8 4.1 2.4 3.5 8.5 3) The summary statistics below is for the number of hurricanes 10 1 4.4 1.3 8.1 4.7 18.4 recorded annually before and after 1970. Compute a 98% confidence interval for the difference in the mean number of hurricanes before 1970 and after 1970. n X Sx 1944 - 1969 26 2.692 1.692 1970 - 2000 31 1,968 1.449 Based upon this interval, is there a difference in the mean number of hurricanes before 1970 and after 1970? 4) A factory hiring people to work on an assembly line gives job applicants a test of manual agility. This test counts how many strangely shaped pegs the applicant can fit into matching holes in a one-minute period. The table summarizes the data by gender of the job applicant. Is there sufficient evidence to say that there is a difference in the mean number of pegs that can be placed correctly for male and female applicants? Male Female 50 50 19.39 17.91 2.52 3.39 wo-sample Inference with Means WS 23 KB | $ VIEW US