GreenFacts, A non-profit organization, reports about the average adult in Europe consumed 17L of alcohol last...
GreenFacts, A non-profit organization, reports about the average adult in Europe consumed 17L of alcohol last year. The standard deviation is 2.1 L. If we randomly select 42 European adults, what is the probability that the sample mean is between 16.7L and 17.4L?
Homework Answers
P(16.7 < 
< 17.4)
= P(-0.93 < Z < 1.23)
= P(Z < 1.23) - P(Z < -0.93)
= 0.8907 - 0.1762
= 0.7145
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GreenFacts, A non-profit organization, reports about the
average adult in Europe consumed 17L of alcohol last...
GreenFacts, a non-profit organization, reports that the average adult in Europe consumed 17 litres of alcohol...
GreenFacts, a non-profit organization, reports that the average adult in Europe consumed 17 litres of alcohol last year. The standard deviation is 2.1 litres. If we randomly select 42 European adults, what is the probability that the sample mean between 16.7 and 17.4 litres?
42. (Problem modified from textbook) A typical adult has an average IQ score of 105 with...
42. (Problem modified from textbook) A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will be between 95 and 120 points? Round answer to three decimal places (i.e. 0.123) _________Answer
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the...
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the population standard deviation is 410 hours and that a random sample of 50 adults was selected. Complete parts a through e below. O = 57.98 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be more than 1,820 hours? P(X>1,820) = .3146 (Round to four decimal places as needed.) c. What is the probability that the...
A typical adult has an average IQ score of 105 with a standard deviation of 20....
A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)
A typical adult has an average IQ score of 105 with a standard deviation of 20....
A typical adult has an average IQ score of 105 with a standard deviation of 20. M 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)
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QUESTION 19 A typical adult has an average IQ score of 105 with a standard deviation...
QUESTION 19 A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)
Chest circumferences of adult males are known to follow a Normal distribution with mean 40 inches...
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A typical adult has an average IQ score of 105 with a standard deviation of 20. M 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)
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