F. 9. From a class of 32 girls and 18 boys, how many study groups of 3 girls and 2 boys can be formed?
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9. From a class of 32 girls and 18 boys, how many study groups of 3 girls and 2 boys can
be formed?
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- Results from of a survey of 50 students indicated that 30 like red jelly beans,29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like no green jelly beans ?If four out of every seventeen students prefer to write with pens over pencils, what proportion of students prefer pens to pencils?In a certain class of 25 students, 12% received A’s, 30% received B’s, 42% received C’s, and 12% received D’s. How many students failed the class?
- Suppose the prevalence of "dance fever" at a college is 40% among women and 10% among men. If there are half as many men as women, what is the overall prevalence of dance fever at the college? What proportion of people without dance fever at that college are women?The boxplots below show the number of marshmallows in a bag, as estimated by students in two elementary school classes. 250 225 200 175 150 125 100 75 50 25 0 Ms. Apple's Class Which class has more students?? A. O Ms. Apple's class B. Ms. Banana's class C. O Both classes have the same number of students. D. O It is impossible to tell from the boxplots. HI Ms. Banana's Class one answer.in a survey of 14 college students, it was found that 9 were taking an English class, 7 were taking a math class, and 6 were taking both English and math. How many students were taking a math class only? How many students were taking an English class only? How many students were taking neither.
- In a group of friends, 1/2 liked to play football and 3/4 liked tennis. If 35 friends in the group liked both tennis and football, how many liked tennis only?2. You are doing team building exercises with the 6 employees at your small business. For one exercise, you will split up your 6 employees into pairs, into thre groups of two. How many unique pairs can be made from 6 employees? 15 12 36An interdepartmental task force is being formed to investigate an increase in violent crimes. 1/5 of the task force will be police officers from the local precinct. 1/4 will be ATF agents, and the remaining 22 will be from the FBI. How many people are participating in the task force?
- Suppose that Ford vehicles make up 20% of the U.S. vehicles market. Suppose also that 8% of U.S. vehicles are Ford’s and trucks (that is, are Ford trucks). What proportion of Ford vehicles are a truck?. What percent of the random samples from Bag 1 had between 30% and 50% red marbles? What percent of the random samples from Bag 2 had between 30% and 50% red marbles? f. What percent of the random samples from Bag 1 had between 70% and 90% red marbles? What percent of the random samples from Bag 2 had between 70% and 90% red marbles? g. Which bag is more likely to be the one with 40% red marbles and which bag is more likely to be the one with 80% red marbles? Why? h. A third bag of 50 marbles contains 50% red marbles and 50% black marbles. If students take random samples of 10 marbles from that bag, how do you think a dot plot for those random samples would compare to the dot plots for Bag 1 and Bag 2?
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