The probability that a person wants better fuel efficiency and also a vehicle navigation system is:
A) 0.90
B) 0.10
C) 0.45
D) 0.35
Question 2
What is the standard deviation of the number of pieces of junk mail you receive daily?
A) 1.61
B) 2.60
C) 6.76
D) There is not sufficient information to determine this.
