Directions Show all of your work to ensure partial credit Yo

Directions: Show all of your work to ensure partial credit. You may use Minitab, SurfStat (web calculator), a graphing calculator, etc

Solution

a. No, this data cannot be used to construct a confidence interval because the sample size is of only 9, so we cannot assume normality, nor does the description mention normality anywhere.

b. Yes, this data can be used to construct a confidence interval for the sample proportion. The p would be .46. The only assumption is that n*p>10 and n(1-p)<10. Both of these are met.

c. No, this data cannot be used to construct a confidence interval because it is known that the data is skew left. Also, the sample size of 12 is small.