Question

Do not make these calculations by hand. Instead, use the proper command in your graphing calculator, unless otherwise noted. Write out what you entered in your calculator. If you complete the probabilities by hand, you will receive no credit for that part of the problem. e. What is the probability that the Democrats will win exactly 8 races? (2 points)f. What is the probability that the Democrats will win at most 5 races? (2 points)g. What is the probability that the Democrats will win at least 4 races? (2 points)h. What is the probability that the Democrats will win between 5 and 9 races (inclusive)? (3 points)i. What is the probability that the Democrats will win at least one race? Round this answer to six decimal places. (2 points)j. What is the probability that the Democrats will win a majority of the races? (2 poi

Answer 1

Given:

12 races

a. The probability of winning a race (0.6) s same for each trial and independent from each other, therefore this indicate that we are working with Bernoulli trials.

b. Mean = p = 0.6

Standard deviation:

`p(1-p)=0.6(1-0.6)=0.6*(0.4)=0.24`

c.