MATH 3339 EXAM 2 - Print Test 12:36 PM PRINTABLE VERSION...

7/27/16, 12 : 36 PM Print Test
Page 1 of 6
PRINTABLE VERSION
Test 2 (Session 3)
You scored 40 out of 40
Question 1
Your answer is CORRECT.
40% of men over 30 years old have some degree of baldness. A sample of 20 men over 30 years old is
chosen at random. X is the number of men in the sample that have some degree of baldness. The
distribution of X is:
a)
Negative binomial
b)
Poisson
c)
Geometric
d)
Binomial
e)
None of the above.
Question 2
Your answer is CORRECT.
Between 5 PM and 6 PM on Saturdays, an average of 7 Big Macs per hour are ordered at the McDonald's
on Elgin. X is the number of Big Macs ordered at this location between 5 PM and 5:05 PM. The
distribution of X is:
Question 3

7/27/16, 12 : 36 PM Print Test
Page 2 of 6
Your answer is CORRECT.
Between 5 PM and 6 PM on Saturdays, an average of 7 Big Macs per hour are ordered at the McDonald's
on Elgin. X is the number of Big Macs ordered at this location between 5 PM and 5:05 PM. The expected
value of X is: