10.2

7.

  1. 1.645.
  2. .0104.
  3. reject the null hypothesis.

9.

  1. -1.28.
  2. .2296.
  3. not enough evidence to reject the null hypothesis.

11.

  1. 1.96.
  2. .1362.
  3. don’t reject the null hypothesis.

13.

do not reject the null hypothesis

15.

  1. .472.

Ho: p=.5.

H1: p<.5.

  1. 169.5<10.

  2. Skip

  3. .0721.

  4. pvalue of .0735 means null hypothesis is true and would expect in about 7 or 8 out of 100 samples.

  5. because > .05.

17.

  1. p-value 0.2578

  2. Type answer here.

19.

  1. p-value .0036

  2. we reject the null hypothess.