The p-value Approach to Hypothesis Testing

Answers

1. a. p-value =0.0427
    b. p-value =0.0384
    c. p-value =0.0055

3. a. p-value =0.0009
    b. p-value =0.0064
    c. p-value =0.0146

5. a. reject H_{0}
    b. do not reject \mathrm{H}_{0}

7. a. Z=3.23, z_{0.01}=2.33, reject H_{0}
    b. p-value =0.0006
    c. reject \mathrm{H}_{0}

9. a. Z=0.68, z_{0.05}=1.645, do not reject H_{0}
    b. p-value =0.4966
    c. do not reject H_{0}

11. a. Z=2.22, z_{0.05}=1.645, reject H_{0}
      b. p-value =0.0132
      c. reject \mathrm{H}_{0}