The mean for QM 213 Exam-1 is 70; the standard deviation is 10. The scores are normally distributed. What is the percentage of the students scored below 46?

a. 7.86%

b. 50.82%

c. 34.13%

d. 0.82%

A recent survey by The American Society of Ticket Agents as reported in the Wall Street Journal indicated that 70% of travel agencies charge customers a fee when they book travel arrangements. If 10 travel agencies in the New England area are selected,

The mean of this distribution is _________.

a. 1.44

b. 7

c. 10

d. 2.1

Theamount of money spent on textbooks by a student during a semester at Norwich averages $420.00 with a standard deviation of $50.00. Find the probability that a randomly chosen student will spendbetween $300 and $400 on textbooks in a semester

a. 0.4918

b. 0.3364

c. 0.6472

d. 0.6006

A recent survey by the VTDept. of Transportation revealed that 60% of the vehicles traveling on US 89, which has a 65 mile per hour speed limit, were speeding. If you were to select 10 vehicles at random and recorded their speed, what is the probability that: all 10 would be speeding

a. 0.006

b. 0.111

c. 0.201

d. 0.251