Question

>de 2 Página 1 MATH 120- Online TEST 4 Optional for credit 1. 100 frogs are released into a parkland lake. 80 % are expected to be green and the rest yellow. What is the number of yellow frogs that would be expected? 2. Assuming equally likely events, that is more likely to happen: drawing a card from a deck and getting a face card or being born on a Tuesday? 3. What is the probability of getting 3 heads in a row if three coins are tossed? 4. A player is dealt 5 cards. What is the probability of being dealt at least one heart. replaced in the pack after each drawing] [For this question vou can assume that the cards are getting a face card or being born on a Tuesday? 3. What is the probability of getting 3 heads in a row if three coins are tossed? 4. A player is dealt 5 cards. What is the probability of being dealt at least one heart [For this question you can assume that the cards are replaced in the pack after each drawing.] S. 3 balls are randomly drawn from a box containing 4 yellow 2 blue and 5 red balls. Youwin a prize if all three are yellow. What is the probability of winning? 6. Raw Data: 3, 5, 7, 4, 3, 8, 6, 6,9, 6, 7,8,9,3, 3, 9 There are 16 data items. Find: a) Mean b) Median c) Midrange Mode Find the standard deviation of the data in question 6. 7. 8. Suppose a variable has a normal distribution with mean 67 and standard deviation 4. What percentage of the distribution is less than 75? (Use z-score.)

Answer 1

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