PSYCH 625 Week 3 Discussion 1 | Assignment Help | University of Phoenix

PSYCH 625 Week 3 Discussion 1 | Assignment Help | University of Phoenix



Week 3 Discussion: one sample z or t tests

 

Post a total of 3 substantive responses over 2 separate days for full participation. This includes your initial post and 2 replies to other students. All posts must be 175 words. If you make more than 3 posts the word count can be lower.

 

Respond to the following in a minimum of 175 words:

From the week 3 checkpoint:

 

You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800 students. The standard deviation for the state is 3.8.

 

Answer the following questions:

·         What z score do you calculate?

·         What is the area between the mean and the z score found in Appendix A of the textbook?

·         What does this mean about the probability of this test score difference occurring by chance? Is it less than 0.05?

 

Discuss your responses with your classmates to enhance your understanding of these concepts.

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