Justify your answers and detail your calculations briefly.
Answers should be brief and well described.
Please check the file
Question 4:
In an article about the cost of health care, Money magazine reported that a visit to a hospi-
tal emergency room for something as simple as a sore throat has a mean cost of $328
(Money, January 2009). Assume that the cost for this type of hospital emergency room visit
is normally distributed with a standard deviation of $92. Answer the following questions
about the cost of a hospital emergency room visit for this medical service.
a. What is the probability that the cost will be more than $500?
b. What is the probability that the cost will be less than $250?
c.What is the probability that the cost will be between $300 and $400?
