27.) The average time a subscriber spends reading The Press-Republican Journal is 45 minutes. Assume the standard deviation is 15 minutes and that the times are normally distributed. What percentage of subscribers spend between 40 minutes and 70 minutes reading the journal? (Choose the closest answer) a. 0.5808 b. 0.9515 C. 0.3707 d. 0.4192 If a normal random variable has a mean = _____ and a standard deviation = _____ , it is called a standard normal distribution. a. l; 1 b. 0;1 c. 0; 0 d. l; 0