Suppose 90% of adult American smokers started smoking before age 21, if a random sample of of 15 smokers of age 21 or older is selected, 1) What is the probability that exactly 10 started smoking before age 21? 2) What is the probability that fewer than 5 started smoking before age 21? 3) Find the probability that between 4 and 7 of them (inclusively) started smoking before age 21? 4) Find the probability that at least 8 started smoking before age 21?

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Suppose 90% of adult American smokers started smoking before
age 21, if a random sample of of 15 smokers of age 21 or older is
selected,
1) What is the probability that exactly 10 started smoking before
age 21?
2) What is the probability that fewer than 5 started smoking
before age 21?
3) Find the probability that between 4 and 7 of them
(inclusively) started smoking before age 21?
4) Find the probability that at least 8 started smoking before
age 21?
5) According to the grocery store XYZ 90% of customers are
satisfied shopping at the store.
25 customers selected at random and were asked if they were
satisfied.
1) What is the probability that exactly 10 customers are
satisfied?
2) What is the probability that at least one were satisfied?
3) What is the probability that between 10 and 15 customers,
(inclusively) were satisfied?
Transcribed Image Text:Suppose 90% of adult American smokers started smoking before age 21, if a random sample of of 15 smokers of age 21 or older is selected, 1) What is the probability that exactly 10 started smoking before age 21? 2) What is the probability that fewer than 5 started smoking before age 21? 3) Find the probability that between 4 and 7 of them (inclusively) started smoking before age 21? 4) Find the probability that at least 8 started smoking before age 21? 5) According to the grocery store XYZ 90% of customers are satisfied shopping at the store. 25 customers selected at random and were asked if they were satisfied. 1) What is the probability that exactly 10 customers are satisfied? 2) What is the probability that at least one were satisfied? 3) What is the probability that between 10 and 15 customers, (inclusively) were satisfied?
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