3. The average lethal blood concentration of morphine is estimated to be 2.5 g/mL with a standard deviation of 0.95 g/mL. The data is normally distributed. Examine the range of values 0.05 to 4.95 g/mL. Answer the following questions and provide the appropriate calculations (13 points):

a. What is the probability associated with the range lethal morphine blood levels?

b. Provide the range of values that lie within 1, 2 and 3 standard deviations from the mean.

c. What is the probability that somebody dies if the blood morphine concentration is 0.3 g/mL.?