Assume that the following confidence interval for the difference in the mean length of male (sample 1) and female babies (sample 2) at birth was constructed using independent simple random samples. What does the confidence interval suggest about the difference in length between male babies and female babies?

-0.2 in. < μ1 - μ2 <1.7 in.

a female babies are longerb male babies are longerc there is no difference in the length between male and female babies

Question

Mathematics

Nehemiah Hobbs

11 March, 16:37

Assume that the following confidence interval for the difference in the mean length of male (sample 1) and female babies (sample 2) at birth was constructed using independent simple random samples. What does the confidence interval suggest about the difference in length between male babies and female babies?

-0.2 in. < μ1 - μ2 <1.7 in.

a female babies are longerb male babies are longerc there is no difference in the length between male and female babies

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Answers (1)

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Austin Rice · Answer 1

c. There is no difference in the length between male and female babies

Step-by-step explanation:

When a confidence interval contains a zero, then there is no statistically significant different between the two group means because this means that there is a zero in the difference between the groups and a zero in the difference means there is no difference.