# math

posted by .

A new chewing gum has been developed that is helpful to those who want to stop smoking. If 60 percent of those people chewing the gum are successful in stopping smoking, what is the probability that in a group of four smokers using the gum at least one quits smoking?

The only combination that would not include at least one person being successful is if all are not successful. If they have a .6 success rate, there is a .4 failure rate. Because all probabilities add up to 1.00.

P(person 1 failure) and P(person 2 failure) and P(person 3 failure) and P(person 4 failure)

And in probability means to multiply. What do we do with this?"

The probability of at least one quitting smoking is equal to 1-prob(all smoking)

Pr(all smoking)=.4^4
Pr(at least one quitting smoking)=1-.4^4
= greater than 96 percent (you do the calculation)

0.1041666

## Similar Questions

Hello, I am new to this website. I visited this website few times.I have some HEALTH questions.I am sick since 5 days.This is about my HEALTH.Please answer my questions if you know the answer to it! My problem is: I was chewing the …
2. ### alg

consider the model y=4/9x + 7/3 for the relation between price and quality of chewing gum. a) what does the slope mean?
3. ### Set Theory

in a recent survey of 400 students of noun, 100 were listed as smokers and 150 as chewers of gum, 75 were listed for both smoking and chewers of gum. How many students are either smokers nor gum chewers.
4. ### Social Studies

Name all the brands of chewing gum.Also is ?
5. ### English

How is my introductory paragraph to persuasive writing?
6. ### English

How is my grammar and punctuation in the folowing paragraph?
7. ### SCIENCE Biology (urgent)

answer it with 2 paragraphs.. 1.How does chlamydia infect the human body?
8. ### math

samina spends three-fourth of her pocket money to buy chocolates and the rest to purchase chewing gum. find the ratio of amount spent on chocolates to that spent on chewing gum
9. ### math

Samina spends three fourth of her pocket money to buy chocolates and rest to purchase chewing gum.find the ratio of amont spent on chocolates to that spent on chewing gums.
10. ### math

Terry bought some gum and candy. The number of packages of chewing gum was one more than the number of mints. The number of mints was three times the number of candy bars. If gum was 6 cents a package, mints were 3 cents each, and …

More Similar Questions