A nutritionist found that in a random sample of 80 families, 20 indicated that

they ate fruit at least 3 times a week. Find the 90% confidence interval of the true

proportion of families who said that they are fruit at least 3 times a week.

8. (6 points) A nutritionist found that in a random sample of 80 families, 20 indicated that they ate fruit at least 3 times a week. Find the 90% confidence interval of the true proportion of families who said that they are fruit at least 3 times a week