Suppose a three-person comittee is formed for a culb by drawing names out of a hat. If the expected number of women is 2 and there are 10 men in the culb, how many women are in the club?

20 women

Explanation:

Making the total number of women in the club 'x', we can then do the following,

Total Number of Names in Hat, N

N = x + 10 ( total number of men)

therefore total number of names in the hat N=x+10

We need to select 3 people so sample size = 3

Using the Hypergeometric Distribution then we can then use the formula,

Expected number of women on the Committee = k * n / N

Where k is the total number

2 = x * 3 / (x + 10)

2 = 3x/(x +10)

3x = 2x +20

x = 20

There are 20 women in the club.

corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. it is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment.

explanation:

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