(a) Find the mean and standard dev people people Find the expected number of people in this sample who are illiterate. (Round your answer to two decimal places.) people (b) How many people would you need to interview to be 94% sure that at least seven of these people can read and write (are not illiterate)? (Enter the smallest number of pea needed to be at least 94% sure.) people

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USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take 11 people at random off a city street. Please answer parts A and B
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USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take eleven people at random off a city street.
n USE SALT
(a) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.)
people
people
Find the expected number of people in this sample who are illiterate. (Round your answer to two decimal places.)
people
(b) How many people would you need to interview to be 94% sure that at least seven of these people can read and write (are not illiterate)? (Enter the smallest number of people
needed to be at least 94% sure.)
people
11.
MY NOTES
ASK YOUR TEACHER.
DETAILS
MacBook Air
40) m
44
888 FA
4.
6
P
Transcribed Image Text:79 Viewing Saved Work Revert to Last Response DETAILS MY NOTES ASK YOUR TEACHER USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take eleven people at random off a city street. n USE SALT (a) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.) people people Find the expected number of people in this sample who are illiterate. (Round your answer to two decimal places.) people (b) How many people would you need to interview to be 94% sure that at least seven of these people can read and write (are not illiterate)? (Enter the smallest number of people needed to be at least 94% sure.) people 11. MY NOTES ASK YOUR TEACHER. DETAILS MacBook Air 40) m 44 888 FA 4. 6 P
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