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STAT 219 Problem Set 5

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Question;Researchers studying infant head circumferences (in centimeters) wish to test if the mean head circumference differs from the historical mean of 34.5 cm. The researchers obtain a sample of 17 infants with a mean head circumference of 34.16 cm and a standard deviation of 0.58 cm.At the? = 0.05 significance level, test the claimHO: ? = 34.5HA: ?? 34.5c) State the rule of rejection (in terms of p-value and level of significance) (5 points)d) Find the p-value (5 points)e) Should you reject or not reject HO? (5 points)f) Does the result suggest that the mean head circumference differs from 34.5 cm? (5 points)

 

Paper#61957 | Written in 18-Jul-2015

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