Data from two samples of students

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A professor hypothesizes that students who earn a C or better in her class spend more time outside of class studying than students who receive a D or F. She collects the following data from two samples of students. What does she conclude?

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

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

  • Null hypothesis:
  • Alternative hypothesis:
  • Statistical test (be specific!):
  • Significance level: alpha = .05
  • degrees of freedom:
  • Critical region (t-value):
  • Calculated t:
  • Decision:

Reference no: EM132188447

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