The probability that a twelve year old has a brother or sister is 25%. suppose you survey 300 twelve year olds. about how many do you think will have a brother or sister?

n(B U S) = 75

Step-by-step explanation:

Explanation:-

Probability:-

P(E) =

Let 'B' be the event of having twelve year old brother

Let 'S' be the event of having twelve year old sister

given data  P(BUS) = 0.25

given total survey  n(survey) = 300

we have to find the value is n(BUS) =?

we will use probability definition we get, P( BUS) =

substitute given values, we will get solution

after cross multiplication , we get

n(BUS) = 0.25 X 300

n(BUS) = 75

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

f(x)=2/3x+4/3 is the answer because is whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation: