Reference no: EM132188447

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: