Friday

March 27, 2015

March 27, 2015

Posted by **agak** on Sunday, October 28, 2012 at 2:10pm.

A) What is the probability that exactly four of them will catch a cold?

B) What is the probability that three or more of them will catch a cold?

C) On average, how many of these five people would you expect to catch a cold?

- xiamen university -
**Reiny**, Sunday, October 28, 2012 at 5:32pmprob of cold = .62

prob of not cold = .38

a) prob of 4 of 5 catch cold

= C(5,4) (.62)^4 (.38)

b) prob 3 or more

= prob 3 + prob 4 + prob 5

= C(5,3)(.62)^3 (.38)^2 + C(5,4) (.62)^4 (.38) + C(5,5) .62^5

= ...

**Answer this Question**

**Related Questions**

statistics - Based on data from a statistical abstract, only about 12% of senior...

Stat. - A national health organization predicts that 20% of American adults will...

college math - biostatistics - hey... first time user and really lost. wondering...

Probabilities - 1.) two marbles are drawn without replacement from a bowl ...

Probabilities - 1.) two marbles are drawn without replacement from a bowl ...

conditional probability - Among a group of people, 10% are from NYC and 90% are ...

12 math - there are 8 opposite sex married couples at a party. two people are ...

Probability - Among a group of people, 10% are from NYC and 90% are not. All ...

Math Probability - At a political rally there are 20 republicians 13 democrates ...

Math - 1.Four coins are tossed.What is the probability of tossing all heads? 2.A...