Let x be a discrete random variable representing the number of supply orders placed per week by a small business. The probability distribution for this random variable is given in the table below.. Number of Supply Orders Placed Per Week Number of supply orders, x 0 1 2 3 4 P(x) 0.12 0.32 0.50 0.04 0.02 Is it considered unusual for this small business to place 3 supply orders in a week?

A. Use the range rule of thumb to answer this question.
B. Then use the rare event rule to answer this question. ​