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

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 (show your work):
Decision:

Expert Solution

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orchestra answered 1 year ago

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