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  3. a professor hypothesizes that students who earn a

A professor hypothesizes that students who earn a C or better in her class spend more...

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Statistics

  1. A professor hypothesizes that students who earn a C or betterin her class spend more time outside of class studying thanstudents who receive a D or F. She collects the following data fromtwo samples of students. What does she conclude?

Number of hours studying per week forC or better students:
8, 4, 4, 2, 1, 5, 3, 2, 3

Number of hours studying per week forD or F students:
6, 2, 1, 0, 3, 2, 1

  1. Null hypothesis:
  2. Alternative hypothesis:
  3. Statistical test (be specific!):
  4. Significance level: alpha = .05
  5. degrees of freedom:
  6. Critical region (t-value):
  7. Calculated t (show your work):
  8. Decision:

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