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PSYCH 3321 SP2025 (28481) Homework 5

Numerical

Imagine you are looking to test whether students in an online section of a particular course get higher grades than students in the in-person section. You take a sample of 48 students in the online class and 48 students in the in-person class. You test this using a t-test of students’ final grades. Students in your sample of the online class receive an average grade of 83 with a standard deviation of 6. Students in the in-person class receive an average grade of 75 with a standard deviation of 10. What is the estimated standard error of the difference between means?   (If you miss any of the numerical questions, you can upload a file in the homework 5 file upload assignment showing your work for potential partial credit)

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We begin by identifying the formula for the standard error of the difference between two independent sample means. When comparing online versus in-person class final grades, the estimated standard error (SE) of the difference is SE = sqrt( (s1^2 / n1) + (s......Login to view full explanation

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