Data collected by child development scientists produced this confidence interval for the average age (in weeks) at

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Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl:

a) Explain carefully what the software output means.
b) What is the margin of error for this interval?
c) If the researcher had calculated a 90% confidence interval, would the margin of error be larger or smaller? Explain.

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Stats Data and Models

ISBN: 978-0321986498

4th edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

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Question Posted: Jan 20, 2016 06:05 AM

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Data collected by child development scientists produced this confidence interval for the average age (in weeks) at

Question:

t-interval for μ (95.00% Confidence): 29.202

Step by Step Answer:

a We are 95 confident that the interval 292 to 318 weeks contains the tr...View the full answer

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