Suppose That You Used a 9-Point Rating Scale and That

question 37

Multiple Choice

Suppose that you used a 9-point rating scale and that you wanted to compare men who had an annual income over $50,000 (Group 1) with men who had an annual income less than or equal to $50,000 (Group 2) on their liking of a new product.If you studied 40 men in Group 1 and they have a mean of 7 and a standard deviation of 2.5,while the 35 men in Group 2 have a mean of 5 and a standard deviation of 1.4,what is the approximate value of t using the t-test?

• A)3.43
• B)4.19
• C)2.64
• D)not enough information to determine

Distinguish between positive, negative, or no correlation from a given graph.

Recognize the kinds of data appropriate for scatterplot representation.

Calculate and interpret the standard deviation in a dataset.

Determine when a calculation falls within the realm of interpolation or extrapolation.

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