1.

  1. 2.602
  2. -1.729
  3. +- 2.179

2

  1. 1.321
  2. -2.426
  3. +- 2.449

3

  1. -1.379

  2. df is 23 therefore .05 gives us a cv = =1.714

  3. skip

  4. fail to reject the null

5

  1. 2.502

  2. 2 sided with df = 22, the cv’s = +-2.819

  3. skip

  4. fail to reject the null hypothesis becuase its not in the rejection region

  5. (99.393;110.207)

9

  1. no the sample size is above 30

  2. -3.108

  3. skip

  4. 34 = df since its double sided it = .0038

  5. reject becuase .0038 is less than our level of significance =.01

10

  1. no because our sample size is larger than 30

  2. test statistic = 2.445

  3. skip

  4. .015 = p-value

  5. we fail to reject the null becuase our p-value is greater than our level of significance

  6. (15.305;81.295)