Author Question: For two events A and B, P( A) = 0.3 P(B) = 0.6, and P(A B) = 0.4. Find P(A B). A) 0.5 B) 1.3 ... (Read 52 times)

tichca · **on:** Jul 25, 2018

For two events A and B, P(

A) = 0.3 P(B) = 0.6, and P(A B) = 0.4. Find P(A B).
A) 0.5 B) 1.3 C) 0.9 D) 0.4

Question 2

A survey of 1010 college seniors working towards an undergraduate degree was conducted.

Each student was asked, Are you planning or not planning to pursue a graduate degree? Of the 1010 surveyed, 658 stated that they were planning to pursue a graduate degree. Construct and interpret a 98 confidence interval for the proportion of college seniors who are planning to pursue a graduate degree.
A) (0.620, 0.682); we are 98 confident that the proportion of college seniors who are planning to pursue a graduate degree is between 0.620 and 0.682.
B) (0.612, 0.690); we are 98 confident that the proportion of college seniors who are planning to pursue a graduate degree is between 0.612 and 0.690.
C) (0.621, 0.680); we are 98 confident that the proportion of college seniors who are planning to pursue a graduate degree is between 0.621 and 0.680.
D) (0.616, 0.686); we are 98 confident that the proportion of college seniors who are planning to pursue a graduate degree is between 0.616 and 0.686.