The following data represent the age (in weeks) at which babies rst crawl based on a survey
Question:
The following data represent the age (in weeks) at which babies ï¬rst crawl based on a survey of 12 mothers conducted by Essential Baby. Construct and interpret a 95% conï¬dence interval for the mean age at which a baby ï¬rst crawls. Use the normal probability plot and boxplot to assist in verifying the model requirements.
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39 52 47 Source: www.essentialbaby.com 30 35 26 37 56 26 39 28 25 30 35 40 45 50 55 60 Age (in weeks)
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Using technology we find 383 and s 100 For 95 confidence 2 0025 Since n 12 then df 11 an...View the full answer
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