1.) For a normal distribution, find the probability that an observation is:

a. at least 0.5 standard deviations above the mean. Draw a normal curve and shade the tail probability. b. at least 0.5 standard deviations below the mean. Draw a normal curve and shade the tail probability.

2.) In the town of Newville, employed residents work an average of 41.6 hours per week, with a standard deviation of 2.2 hours. Assuming this variable is normally distributed, what percent of employed residents work more than 40 hours per week?