5. The length of human pregnancies is approximately normal with mean μ=266 days and standard deviation σ=16 days.
What is the probability that a random sample of 7 pregnancies has a mean gestation period of 260 days or​ less?
The probability that the mean of a random sample of 7 pregnancies is less than 260 days is approximately? (Round to 4 decimal places)
6. According to a study conducted by a statistical​ organization, the proportion of people who are satisfied with the way things are going in their lives is 0.72. Suppose that a random sample of 100 people is obtained.
Part 1
What is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.76​?
The probability that the proportion who are satisfied with the way things are going in their life is more than 0.76 is __?
​(Round to four decimal places as​ needed.)