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PSY 305 Assignment 1

Psychology assignment analyzing various theoretical perspectives.

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PSY305 Assignment 11. A professor has been teaching statistics for many years. His records show that theoverall mean for final exam scores is 85 with a standard deviation of 10. He believes thatthis year’s class is superb to the previous classes. The mean for the 40 students is 90.a.What is the null hypothesis?There is no significantdifference betweenthe classes andany obtained difference isa result ofchance occurrence due to sampling error.b.What is the research hypothesis?The professor believes that this year’s class is superior to his previous ones.c.Is this a one or two tailed hypothesis?Twotailed hypothesis or Non directionald.Which test should you use? Why?Z-test for single samplesbecause it is used to compare the sample mean and thepopulation mean and check if there is a significant difference and if the parametersof the null-hypothesis population are knowne.Calculate the appropriate statistical test.Population mean (μ) = 85

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Document Details

University
Wilmington University
Course
PSY 305
Subject
Psychology

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