Suppose That in the Previous Question the 95% Confidence Interval

question 18

Multiple Choice

Suppose that in the previous question the 95% confidence interval on the difference between group means was computed to be 2.63 ≤  µ1 -  µ2  ≤ 13.37. What can we conclude about the null hypothesis of no treatment effect?

• A) The difference is significant.
• B) The difference is not significant.
• C) The treatment doesn't work.
• D) Confidence intervals are totally unsuited to this question.

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Definitions:

Female

Referring to the sex of an organism or individual having characteristics associated biologically and genetically with females, often in contrast to males.

Male

Refers to the biological sex that produces small, mobile gametes, typically associated with XY chromosomes in many species.

Combinations

The selection of items from a collection, such that the order of selection does not matter, often used in probability and statistics.

Distinguishable

The quality of being clearly different or distinct in character or appearance, making something recognizable or understandable.