Question
The mean weight of newborns in the U.S. is 3420g. A random sample of n =...
The mean weight of newborns in the U.S. is 3420g. A random sample of n = 15 Norwegian babies had the mean birth weight ¯x = 3750 grams and standard deviation s = 498 grams.
(a) At 5% significance level conduct a hypotheses test to determine whether mean weight of all Norwegian newborns is di↵erent from the mean birth weight of U.S. babies.
(b) Interpret your answer from part (a).
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