Math 1342 Test II - Review.pdf

Math 1342 Test II - Review.pdf - Math 1342 Statistics Test...

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Math 1342 Statistics Test II Review 1. Which are not valid probabilities: a. 0.115 b. 5/4 c. 0.016 d. 0 e. 3 5 11 2. 2% of the population has red hair. If 4 people were selected at random, then: a. What is the probability that none of the 4 have red hair? b. What is the probability that all 4 have red hair? 3. 102 people were surveyed at random on what model of car they drive: MODEL FREQUENCY Ford 22 Chevrolet 15 Honda 30 Toyota 35 TOTAL 102 a. What is the probability that a person drives a Honda? b. Is it unusual for a person to drive a Chevrolet? c. What % of people drive a Honda or a Ford? 4. 30 out of a group of 35 will be selected for a coffee study. How many different groups of 30 are possible? 5. A pizza restaurant offers 4 types of crusts, 3 types of cheeses, and 8 single toppings. How many different pizzas can be made? 6. The number of hours playing video games over the weekend spent by 8 students for a test and their scores on the test taken the following Monday are: # Hrs Playing Games | 0 5 2 6 10 3 7 4 Test Scores | 96 65 82 58 51 72 55 68 a. What is the Explanatory variable?
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