A bakery makes doughnuts that are packaged in boxes with labels stating that there are 12 doughnuts weighing a total of 42 oz. Construct a 90% confidence interval for the mean weight of the following 12 doughnuts. Write your results in words (non-technical terms).
{ 3.43 3.37 3.58 3.50 3.68 3.61 3.42 3.52 3.66 3.50 3.36 3.42 }
2. A University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 2.0% of the 451 members of the 50-Plus Fitness Association died. We are interested in the proportion of people over 50 who ran and died in the same eight-year period. Find the 95% confidence interval. Write your results in words (non-technical terms).
