Question

The data below shows age (x, in years) and weekly entertainment expenses (y, in dollars) for...

The data below shows age (x, in years) and weekly entertainment expenses (y, in dollars) for a random sample of ten adults. The least squares regression model for this data is yˆ=344.07 − 4.21x.y^=344.07 − 4.21x. Select all valid statements regarding the use of this regression model.

You must make a selection for each option. Click once to place a check mark for correct answers and click twice to place an "x" for the wrong answers.

  • It is appropriate to use this model to predict average weekly entertainment expenses for a 53-year-old adult.unanswered
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 36-year-old adult.unanswered
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 19-year-old adult.unanswered
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 65-year-old adult.unanswered
Age Entertainment expenses
21 242
23 265
27 275
30 192
33 215
42 98
45 164
47 128
55 159
61 85

Homework Answers

Answer #1

y^=344.07 − 4.21x

as the model contain the values of 53 and 36 but not 19 and 65.

  • It is appropriate to use this model to predict average weekly entertainment expenses for a 53-year-old adult. True
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 36-year-old adult. True
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 19-year-old adult. False
  • It is appropriate to use this model to predict average weekly entertainment expenses for a 65-year-old adult. False
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