The probability is p = 0.80 that a patient with a certain disease will be successfully treated with a new medical treatment. Suppose that the treatment is used on 40 patients. What is the expected value of the number of patients who are successfully treated?
a. 40
b. 20
c. 8
d. 32
Question 2
Suppose that a 95 confidence interval for the proportion of teen drivers who were involved in a car accident is found to be (0.1425, 0.2875). Does the 95 confidence level imply that P(0.1425 < < 0.2875) = 0.95?
a. Yes
b. No