An Administrator Working in a Child Guidance Center Tests the Hypothesis

question 14

Multiple Choice

An administrator working in a child guidance center tests the hypothesis that family income will be related to number of treatment sessions attended.Her sample size is large, and her level of significance is .05.How should her critical region appear in her theoretical sampling distribution?

• A)It should be split between the right and left tails, with .05 appearing in each tail.
• B)It should be split between the right and left tails, with .025 appearing in each tail.
• C)It should appear in the tail signifying a positive relationship, with .05 in that tail.
• D)It should appear in the tail signifying a negative relationship, with .05 in that tail.

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Definitions:

1st Quartile

The value below which 25% of the data points in a dataset fall, indicating the lower quarter of the data.

3rd Quartile

Also known as the upper quartile, it is the value below which 75% of the data in a dataset falls.

Symmetric Distribution

A distribution where the left and right sides of the distribution are mirror images of each other.

Median

The middle value of a dataset, which divides the dataset into two halves when the numbers are arranged in ascending order.