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allsm [11]
3 years ago
10

A marketing research consultant for a hotel chain hypothesizes that men and women differ in their color preference for guest roo

ms. The consultant shows pictures of rooms decorated with three different color scheme to each person in a random sample of 110 men and to each person in a random sample of 90 women. The consultant asks each person to choose his or her favorite color scheme. A chi-square test for homogeneity of proportions will be used to test the consultant’s hypothesis. Assuming that the conditions for inference are met, which of the following statements is true for the test? Which of the following procedures is the most appropriate for investigating whether an association exists between gender and the number of friends a person has on a social media Web site?
A matched-pairs t-test for a mean difference

A. A two-sample t-test for the difference between means

B. A t-test for the slope of the regression line

C. A chi-square goodness-of-fit test

D. A chi-square test of independence
Mathematics
1 answer:
Stella [2.4K]3 years ago
4 0

Answer:

t-test for the slope of the regression line

Step-by-step explanation:

The slope of a regression line shows a possible relationship between two variables, in this case, person's gender and number of friends the person has.

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astra-53 [7]

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Answer:

  (x, y) = (-1, -16) or (3, 0)

Step-by-step explanation:

Perhaps you want to solve the system of equations ...

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Substituting the first expression for y into the second equation gives ...

  x^2 +2x -15 -4x = -12

  x^2 -2x -3 = 0 . . . . . . . . add 12

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Solutions are the values of x that make the factors zero: x = 3, x = -1.

The corresponding values of y are ...

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The solutions to the system are ...

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Percentage: 175%

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