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

question 34

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.

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Definitions:

Basicity

A measure of an entity’s ability to accept protons, often related to the strength of bases in chemical reactions.

Alkyl Groups

Hydrocarbon groups derived from alkanes by removing one hydrogen atom, often represented generically as R-, and used as substituents in organic chemistry.

Electron Donors

Atoms, molecules, or ions that provide electrons to other atoms, molecules, or ions during chemical reactions, often resulting in the reduction of the latter.

Alkylamine

A compound resulting from the replacement of one or more hydrogen atoms of ammonia (NH3) with alkyl groups.