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9. [-/0.22 Points] DETAILS BBUNDERSTAT12 5.3.015.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take eight people at random off a city street. (a) Make a histogram showing the probability distribution of the number of illiterate people out of the eight people in the sample. 0.35 0.35 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.0 0.05 0.35 0.35 0.30 0.30 0.25 0.25 P(r 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 (b) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.) H = people 0 = people Find the expected number of people in this sample who are illiterate. (Round your answer to two decimal places.) people (c) How many people would you need to interview to be 97% sure that at least seven of these people can read and write (are not illiterate)? people Need Help? Read It Watch it Master It Submit