Question: 1.What is the null hypothesis? 2.How do calculate the test statistic for testing the null hypothesis? 3.What are the degrees of freedom on the test

1.What is the null hypothesis?

2.How do calculate the test statistic for testing the null hypothesis?

3.What are the degrees of freedom on the test statistic calculated from question 2?

4.How would you modify this study design to make it a cross-over study?

1.What is the null hypothesis?2.How do calculate the test statistic for testing

1. Overnight sodium excretion before and after dietary counseling was recorded for n = 8 patients. During Week 0 individuals had no dietary counseling. During week 1, they had dietary counseling. Below are the results. Table 8.20 Overnight sodium excretion (mEq/8hr) before and after dietary counseling Week 0 Person (baseline) Week 1 Difference 7.85 9.50 -1.74 12.03 34.50 -22.47 21.84 4.55 17.29 13.94 20.78 -6.84 16.68 11.69 4.09 41.78 32.51 9.27 14.97 5.46 9.51 12.07 12.95 -0.BB 17.65 16.50 1.14 10.56 11.63 12.22

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