A simple random sample of size n = 12 is obtained from a population with =

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A simple random sample of size n = 12 is obtained from a population with μ = 69 and σ = 15.

(a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities regarding the sample mean? Assuming the normal model can be used, describe the sampling distribution x.

(b) Assuming the normal model can be used, determine P(x̅ < 72.6).

(c) Assuming the normal model can be used, determine P(x̅ ≥ 70.2).

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Statistics Informed Decisions Using Data

ISBN: 9781292157115

5th Global Edition

Authors: Michael Sullivan

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Question Posted: Mar 29, 2024 01:00 AM

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A simple random sample of size n = 12 is obtained from a population with =

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a Given Population mean 69 Population standard deviation 15 Sample size n 12 To u...View the full answer

Statistics Informed Decisions Using Data

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