Note: \(\mu\) \(\sigma\)

10.1

9.

right-tailed test; population mean

10.

left tailed test; population proportion

11.

two-tailed test; population standard deviation

12.

right-tailed test; population proportion

13.

left-tailed test; population mean

14.

two tailed test; population standard deviation

15.

Ho: p=0.105

H1: p>0.105

16.

Ho: mu=$17,072

H1: mu not equal to $17,072

17.

Ho: mu=$218,600

H1: mu<$218,600

18.

Ho: p=32oz

H1: p<32oz

19.

Ho: sigma=0.7

H1: sigma<0.7

20.

Ho: p=0.196

H1: p>0.196

21.

Ho: mu=$47.47

H1: mu is not equal to $47.47

10.2

7.

  1. 2.31
  2. 0.0104
  3. Reject the null hypothesis

9.

  1. -0.74
  2. 0.2296
  3. Do not reject null hypothesis

11.

  1. -1.49
  2. 0.1362
  3. Do not reject null hypothesis

13.

Pvalue= About 27 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. In conclusion, we do not reject the null hypothesis.

15.

  1. pvalue= 0.2578

  2. Do not reject null hypothesis

17.

  1. pvalue=0.0047

  2. Reject the null hypothesis

19.

  1. pvalue=0.0047

  2. Reject the null hypothesis