Justify your answers and detail your calculations briefly.
Answers should be brief and well described.
Please check the file
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?