A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.07. 32. If 213 are sampled, what is the probability that the sample proportion will be less than 0.05? Round your answer to four decimal places. Answer:

College Algebra
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ISBN:9781337282291
Author:Ron Larson
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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Suppose babies born in a large hospital have a mean weight of 4088 grams, and a
variance of 55,696.
31.
If 128 babies are sampled at random from the hospital, what is the probability that the
mean weight of the sample babies would be less than 4132 grams? Round your answer
to four decimal places.
Answer:
A direct mail company wishes to estimate the proportion of people on a large mailing
list that will purchase a product. Suppose the true proportion is 0.07.
32.
If 213 are sampled, what is the probability that the sample proportion will be less than
0.05? Round your answer to four decimal places.
Answer:
A research company desires to know the mean consumption of milk per week among
people over age 20. They believe that the milk consumption has a mean of 4.5 liters,
and want to construct a 99% confidence interval with a maximum error of 0.09 liters.
33.
Assuming a standard deviation of 1.2 liters, what is the minimum number of people
over age 20 they must include in their sample? Round your answer up to the next
integer.
Answer:
34.
Consider the value of t such that 0.1 of the area under the curve is to the right of t.
Step 1. Select the graph which best represents the given description of t.
Transcribed Image Text:Suppose babies born in a large hospital have a mean weight of 4088 grams, and a variance of 55,696. 31. If 128 babies are sampled at random from the hospital, what is the probability that the mean weight of the sample babies would be less than 4132 grams? Round your answer to four decimal places. Answer: A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.07. 32. If 213 are sampled, what is the probability that the sample proportion will be less than 0.05? Round your answer to four decimal places. Answer: A research company desires to know the mean consumption of milk per week among people over age 20. They believe that the milk consumption has a mean of 4.5 liters, and want to construct a 99% confidence interval with a maximum error of 0.09 liters. 33. Assuming a standard deviation of 1.2 liters, what is the minimum number of people over age 20 they must include in their sample? Round your answer up to the next integer. Answer: 34. Consider the value of t such that 0.1 of the area under the curve is to the right of t. Step 1. Select the graph which best represents the given description of t.
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