Question 10 of 13 In which of the following scenarios we cannot safely assume that the...
Question 10 of 13
In which of the following scenarios we cannot safely assume that the sampling distribution of the sample mean X¯¯¯
is normal or approximately normal?
The weight of the baggage checked by an individual passenger has mean μ=50
pounds and standard deviation σ=15 pounds. A random sample of n=10 passengers is selected and the average weight of their checked baggage, x¯
, is determined.
The weight of the baggage checked by an individual passenger has a normal distribution with mean μ=50
pounds and standard deviation σ=15 pounds. A random sample of n=75 passengers is selected and the average weight of their checked baggage, x¯
, is determined.
The weight of the baggage checked by an individual passenger has mean μ=50
pounds and standard deviation σ=15 pounds. A random sample of n=75 passengers is selected and the average weight of their checked baggage, x¯
, is determined.
The weight of the baggage checked by an individual passenger has a normal distribution with mean μ=50
pounds and standard deviation σ=15 pounds. A random sample of n=10 passengers is selected and the average weight of their checked baggage, x¯, is determined.
Homework Answers
The weight of the baggage checked by an individual passenger has mean μ=50
pounds and standard deviation σ=15 pounds. A random sample of n=10 passengers is selected and the average weight of their checked baggage, x¯
, is determined.
This scenario we cannot safely assume that the sampling distribution of sample mean x-bar is normal or approximately normal
According to central limit theorm
n>=30 (n is grater than equal
to 30) approximately normal
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Question 10 of 13
In which of the following scenarios we cannot safely assume that
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2. An airplane with room for 100 passengers has a total baggage limit of 6000 lb....
2. An airplane with room for 100 passengers has a total baggage limit of 6000 lb. Suppose that the total weight of the baggage checked by an individual passenger is a non-normal random variable x with a mean value of 55 lb anda standard deviation of 17 lb. Describe the sampling distribution of the sample mean by filling in the spaces below: What is the probability that the total weight of their baggage will exceed the weight limit? (Make sure...
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Overweight baggage: Suppose weights of the checked baggage of airline passengers follow a nearly normal distribution with mean 45 pounds and standard deviation 3.2 pounds. a.) Most airlines charge a fee for baggage that weight in excess of 50 pounds. Determine what percent of airline passengers incur this fee. b.) if an airline charge a fee for baggage that weight in excess of 48 pounds. Determine what percent of airline passengers incur this fee. *Please send answers or solutions in...
Overweight baggage. Suppose weights of the checked baggage of airline passengers follow a nearly normal distribution...
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(1 point) Overweight baggage. Suppose weights of the checked baggage of airline passengers follow a nearly...
(1 point) Overweight baggage. Suppose weights of the checked baggage of airline passengers follow a nearly normal distribution with mean 48 pounds and standard deviation 5.2 pounds. Most airlines charge a fee for baggage that weigh in excess of 50 pounds. Determine what percent of airline passengers incur this fee. Round your answer to four decimal places. %
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2 pts D | Question 12 At the end of the spring semester, the dean of...
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In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there is a weight limit of 2500 lb. Assume that the average weight of students, faculty, and staff on campus is 151 lb, that the standard deviation is 26 lb, and that the distribution of weights of individuals on campus is approximately normal. If a random sample of 16 persons from the campus is to be taken: (a)...
2 pts D | Question 12 At the end of the spring semester, the dean of students sent a survey to the entire freshman class. One question asked the students how much weight they had gained or lost since the beginning of the school year The average was a gain of μ-9 pounds with a standard deviation of σ 6. The distribution of scores was approximately normal. A sample of n 4 students is selected, and the average weight change...
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