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3. When 911 dispatches an ambulance to an emergency, the ambulance arrives within 6 minutes 95% of the time. Find the probability that in 10 calls, the ambulance arrives within 6 minutes at most 7 times. 4. In the wild, about 35% of acorns germinate and grow into oak trees. If 50 acorns fall in the forest, how many would we expect to germinate? 5. Approximately 3.4% of Americans are vegetarian. If we ask a random sample of 36 people, what is the probability that exactly 4 of them are vegetarian? 6. Thirteen percent of adults are left-handed. In a group of 25 adults, find the probability of finding at least one lefty. 7. Six percent of American adults are considered millionaires. If 100 randomly selected adults are interviewed, what is the probability that there are 7 or 8 millionaires in the group? 8. About 29% of Americans own a cat. In a randomly selected group of 80 Americans, find the probability that at least 20 own a cat.

3. When 911 dispatches an ambulance to an emergency, the ambulance arrives within 6 minutes 95% of the time. Find the probability that in 10 calls, the ambulance arrives within 6 minutes at most 7 times. 4. In the wild, about 35% of acorns germinate and grow into oak trees. If 50 acorns fall in the forest, how many would we expect to germinate? 5. Approximately 3.4% of Americans are vegetarian. If we ask a random sample of 36 people, what is the probability that exactly 4 of them are vegetarian? 6. Thirteen percent of adults are left-handed. In a group of 25 adults, find the probability of finding at least one lefty. 7. Six percent of American adults are considered millionaires. If 100 randomly selected adults are interviewed, what is the probability that there are 7 or 8 millionaires in the group? 8. About 29% of Americans own a cat. In a randomly selected group of 80 Americans, find the probability that at least 20 own a cat.

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Need help on number 4 and 5
3. When 911 dispatches an ambulance to an emergency, the ambulance arrives within 6 minutes 95% of the time. Find the probability that in 10 calls, the ambulance arrives within 6 minutes at most 7 times. 4. In the wild, about 35% of acorns germinate and grow into oak trees. If 50 acorns fall in the forest, how many would we expect to germinate? 5. Approximately 3.4% of Americans are vegetarian. If we ask a random sample of 36 people, what is the probability that exactly 4 of them are vegetarian? 6. Thirteen percent of adults are left-handed. In a group of 25 adults, find the probability of finding at least one lefty. 7. Six percent of American adults are considered millionaires. If 100 randomly selected adults are interviewed, what is the probability that there are 7 or 8 millionaires in the group? 8. About 29% of Americans own a cat. In a randomly selected group of 80 Americans, find the probability that at least 20 own a cat. 9. Fort bate in wildlife-related
Transcribed Image Text:3. When 911 dispatches an ambulance to an emergency, the ambulance arrives within 6 minutes 95% of the time. Find the probability that in 10 calls, the ambulance arrives within 6 minutes at most 7 times. 4. In the wild, about 35% of acorns germinate and grow into oak trees. If 50 acorns fall in the forest, how many would we expect to germinate? 5. Approximately 3.4% of Americans are vegetarian. If we ask a random sample of 36 people, what is the probability that exactly 4 of them are vegetarian? 6. Thirteen percent of adults are left-handed. In a group of 25 adults, find the probability of finding at least one lefty. 7. Six percent of American adults are considered millionaires. If 100 randomly selected adults are interviewed, what is the probability that there are 7 or 8 millionaires in the group? 8. About 29% of Americans own a cat. In a randomly selected group of 80 Americans, find the probability that at least 20 own a cat. 9. Fort bate in wildlife-related
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