SOLUTION: If the probability of passing a road test on the first try is 62%, what is the mean, variance and standard deviation if there are 54 people taking the road test?

SOLUTION: If the probability of passing a road test on the first try is 62%, what is the mean, variance and standard deviation if there are 54 people taking the road test?

Algebra.Com

Question 1036355: If the probability of passing a road test on the first try is 62%, what is the mean, variance and standard deviation if there are 54 people taking the road test?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Binomial (2 outcomes)
Mean=np=0.62*54=33.48.
variance=np(1-p)=0.62*54*0.38=12.72
SD=sqrt(12.72)=3.57 (unrounded from above)
RELATED QUESTIONS
If 80% of the applicants are able to pass a driver's proficiency road test, find the... (answered by stanbon)

If 80% of the applicants are able to pass a driver's proficiency road test, find the... (answered by richard1234)

a die is tossed 120 times if number of 3 appears is recorded what is the mean and... (answered by ewatrrr)

I Attempt all questions show all the necessary steps in your work 1. If P(A) =1/3 and... (answered by lynnlo)

Imagine that there is an achievement test for which the mean is 50 and the standard... (answered by rothauserc)

A fair coin is tossed for 5 times. what is the probability different numbers of tails.... (answered by robertb)

If a die is rolled 12 times, what is the probability that it will land on 4, six out of... (answered by stanbon)

consider a test with 50 multiple-choice questions, each with 5 options. If students guess (answered by stanbon)

A discrete random variable has a mean of 400 and a variance of 64. What is the standard... (answered by stanbon)