STATISTICS

Suppose that you are in a class of 29 students and it is assumed that approximately 16% of the population is left-handed. (Give your answers correct to three decimal places.)
(a) Compute the probability that exactly five students are left-handed.

(b) Compute the probability that at most four students are left-handed.

(c) Compute the probability that at least six students are left-handed.

1. Formula:

P(x) = (nCx)(p^x)[q^(n-x)]

For (a):

x = 5
p = .16
q = 1 - p = 1 - .16 = .84
n = 29

Substitute and calculate for your probability.

For (b):

x = 0,1,2,3,4
p,q,n stay the same.

Add each probability you calculate for the total probability.

For (c):

Add together the probabilities you calculated for (a) and (b). Then subtract that value from 1. This will be your answer for (c).

You could also use a binomial probability table to find the above probabilities as well. This would be easier than calculating each by hand.

I hope this will help get you started.

posted by MathGuru

Similar Questions

1. statistics

Suppose that you are in a class of 28 students and it is assumed that approximately 8% of the population is left-handed. (Give your answers correct to three decimal place. Compute the probability that exactly five students are
2. Stats

Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
3. Statistics

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
4. math check

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
6. Statistics help

Suppose that you are in a class of 32 students and it is assumed that approximately 9% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
7. statistics

Suppose the final exam scores in a large class is symmetric mound shaped with a mean of 70 points and standard deviation of 10 points. The percentage of students in the class who receive more than 60 points is approximately
8. Statistics

The heights of the students in a statistics class are approximately normal with mean 68 inches and a standard deviation of 2.75 inches. Suppose that the heights of the 15 male students in the statistics class are also
9. math check

Posted by Nora 56 on Sunday, June 2, 2013 at 7:32pm. Sorry to repost but no one answered after I posted on the 2nd,please help, Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the
10. Math 7th

In order to be allowed to go on a does trip, 80% of the students in a class must pads a pop quiz. If there are 26 students in the class. Approximately how many must pass the quiz?

More Similar Questions