you are asked to estimate the average weight of an adult male passenger for a study to maximize the number of seats in a certain airplane. you collect random weights of 1000 men passengers from a population of 100,000. you find that the average man in the sample weighs 180 pounds and the standard deviation of the sample is 30 pounds. what is the 95% confidence interval?

asked by KK

13 years ago

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1 answer

95% = mean ± 1.96 SEm

SEm = SD/√n

I'll let you do he calculations.

answered by PsyDAG

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Question

you are asked to estimate the average weight of an adult male passenger for a study to maximize the number of seats in a certain airplane. you collect random weights of 1000 men passengers from a population of 100,000. you find that the average man in the sample weighs 180 pounds and the standard deviation of the sample is 30 pounds. what is the 95% confidence interval?

1 answer

95% = mean ± 1.96 SEm

SEm = SD/√n

I'll let you do he calculations.

Ask a New Question or answer this question.

PsyDAG · Answer

95% = mean ± 1.96 SEm SEm = SD/√n I'll let you do he calculations.