The span of attention in learning science before lunch was compared with the span of attention in learning science after lunch for a class of 40 elementary students. Twenty-eight students found their span of attention after lunch was shorter, and three detected no significant difference. Is the span of attention in learning science before lunch longer than the span of attention after lunch? Step 1: Stating the null hypothesis and the alternative hypothesis Ho: H₁: Step 2: Choosing the statistical test Step 3: Significance level Step 4: Sampling distribution and region of rejection. Step 5: Compute the test statistics Step 6: Decision Making

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