Assume That the Following Confidence Interval for the Difference in the Mean

question 28

Multiple Choice

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. $- 0.2 \mathrm { in } < \mu _ { 1 } - \mu _ { 2 } < 2.7 \mathrm { in }$ What does the confidence interval suggest about the difference in length between male babies and female babies?

• A) Male babies are longer.
• B) Female babies are longer.
• C) There is no difference in the length between male and female babies.