A Group of College Students Believes the Average Grades in Psychology

question 80

Multiple Choice

A group of college students believes the average grades in psychology courses are different than the average grades in biology courses. The group found the average
Psychology grades of a sample of 11 students was 82.4 and the average biology grades of
A sample of 11 students was 81.2. What is the null hypothesis for this study?

• A) \(H _ { 0 } : \mu _ { \text {psychology } } = \mu _ { \text {biology } }\)
• B) \(H _ { 0 } : \mu _ { \text {psychology } } + \mu _ { \text {biology } } = 163.6\)
• C) \(H _ { 0 } : \mu = 82.4\) and \(81.2\)
• D) \(H _ { 0 } : \mu _ { \text {psychology } } = 82.4\) and \(H _ { 0 } : \mu _ { \text {biology } } = 81.2\)

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