Question

8. Based on a Gallup poll, 13% of U.S. adults are vegetarians. If 50 adults are randomly selected, determine the following probabilities. Round all answers to the nearest thousandth. a. What is the probability of exactly 12 of the 50 adults are vegetarian? b. What is the probability that fewer than 8 of the adults are vegetarian? c. What is the probability that at least 10 of the adults are vegetarian? d. What is the mean number of U.S. adult vegetarians in a sample of size of 50? e. What is the standard deviation of the number of U.S. adult vegetarians in a sample size of 50?

          8.
Based on a Gallup poll, 13% of U.S. adults are vegetarians. If 50 adults
are randomly selected, determine the following probabilities. Round all
answers to the nearest thousandth.
a. What is the probability of exactly 12 of the 50 adults are vegetarian?
b. What is the probability that fewer than 8 of the adults are vegetarian?
c. What is the probability that at least 10 of the adults are vegetarian?
d. What is the mean number of U.S. adult vegetarians in a sample of size of
50?
e. What is the standard deviation of the number of U.S. adult vegetarians in a
sample size of 50?

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8.
Based on a Gallup poll, 13% of U.S. adults are vegetarians. If 50 adults
are randomly selected, determine the following probabilities. Round all
answers to the nearest thousandth.
a. What is the probability of exactly 12 of the 50 adults are vegetarian?
b. What is the probability that fewer than 8 of the adults are vegetarian?
c. What is the probability that at least 10 of the adults are vegetarian?
d. What is the mean number of U.S. adult vegetarians in a sample of size of
50?
e. What is the standard deviation of the number of U.S. adult vegetarians in a
sample size of 50?

Added by Yolanda H.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Supreeta N

05/09/2023

Step 1

To calculate this probability, we can use the binomial probability formula: P(X = k) = (n choose k) * p^k * (1-p)^(n-k) Where: n = 50 (sample size) k = 12 (number of vegetarians) p = 0.13 (probability of being vegetarian) Using the formula: P(X = 12) = (50 choose Show more…

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solve this question Based on a Gallup poll,13% of U.S.adults are vegetarians.If 50 adults are randomly selected,determine the following probabilities. Round all answers to the nearest thousandth. a.What is the probability of exactly 12 of the 50 adults are vegetarian b.What is the probability that fewer than 8 of the adults are vegetarian c.What is the probability that at least 10 of the adults are vegetarian d.What is the mean number of U.S.adult vegetarians in a sample of size of 50? e.What is the standard deviation of the number of U.S. adult vegetarians in a sample size of 50?

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