Complete the mcq:
Q1. The weekly demand for a product follows a normal curve with an average of 1000 units and a standard deviation of 200 units. In how many weeks during a typical 52-week year would be below 900 units?
a. 12 weeks
b. 14 weeks
c. 16 weeks
d. 18 weeks
Q2. The lifetime of a particular product made by a company is Normally distributed with a mean of 4 years and a standard deviation of 1.6 years. The company offers a warranty of 1 year for the product. What percentage of the product sold by the company will need warranty service (that is, it will last less than 1 year)?
a. 0.1 %
b. 1 %
c. 3 %
d. 5 %