Answer:
Binomial Problem with n = 20 and p(hire woman) = 1/2
P(at most two) = binomial(20,1/2,2) = 0.0001811
Step-by-step explanation:
The probability of successes in trials where is the probability of success on any given trial is given by:
I got the answer to be 0.9. To get the mean, you add up all the data and then divide it by the number of numbers in you data, so I did 0.5+0.7+1.0+1.7+0.6+1.0=0.8 and then divided by 7, giving me 0.9.
Answer:
nCr = n! / (r!)(n-r!).
Step-by-step explanation:
That would be nCr = n! / (r!)(n-r!).
A quick way of working these out is as follows:
Take 7C4:
this is 7*6*5*4/4*3*2*1 Cancelling out the 4 and 3*2:
= 7*5
= 35.
15C12 = 15C(15-12)
= 15C3
= 15*14*13 / 3*2*1
= 5*7*13
= 455.
Negative. You have $252, and the check will take away $287, so 252-287 is -35.
