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For ALL following item, indicate the appropriate type of hypothesis test and explain why. Select TWO independent sample t-test items, and TWO dependent sample t-test

For ALL following item, indicate the appropriate type of hypothesis test and explain why.

Select TWO independent sample t-test items, and TWO dependent sample t-test items to complete the following tasks:

Indicate independent variable and dependent variable. What is the level of measurement for each?

Perform the FULL hypothesis test procedure.

Calculate Cohen's d, % Confidence Interval, Percentage/Proportion of Variance r2 if necessary.

Indicate if there is a risk for Type I or Type II error?

1. A sport coach wants to compare the learning performance between athletes in contact sport (ex, football) and non-contact sports (ex, hockey). Indicate if test scores of new learning performance were significantly lower among the contact sport athletes compared to the noncontact sport athletes at = .05 if the raw data of test scores are obtained as below and report with 90% CI

Hockey player: 10, 8, 7, 9, 13, 7, 6, 12 Football player: 7, 4, 9, 3, 7, 6, 10, 2

2. Hanh wants to evaluate whether her weekly tutoring sessions have been beneficial for her two class. As a result, she decides to match her students' class grades in class 1 (no tutoring) and class 2 (tutoring provided. Test whether or not Hanh's tutoring has a significant effect on the students' class grades at a .01 level of significance and report it with 97% CI.

Tutoring

Class 1

80 88 92 67 71

Class 2

85 82 96 35 77

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