1. Admission Charge for the Movies - The average admission charge for a movie is $5.81. If the distribution of movie admission charges is approximately normal with a standard deviation of $0.81, what is the probability that a randomly selected admission charge is less than $3.50? 2. Teachers Salary - The average annual salary for all U. S. teachers is $47,750. Assume that the distribution is normal and standard deviation is $5,680. Find the probability that a randomly selected teacher earns: a. Between $35,000 and $45,000 a year b. More than $40,000 a year 3. Chocolate Bar Calories - The average number of calories in a 1.5-ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with a standard deviation of 10. Find the probability that a randomly selected chocolate bar will have: a. Between 200 and 220 calories b. Less than 200 calories 4. Monthly Mortgage Payments - The average monthly mortgage payment including principal and interest is $982 in the United States. If the standard deviation is approximately $180 and the mortgage payments are approximately normally distributed, find the probability that a randomly selected monthly payment is: a. More than $1000 b. More than $1475 C. Between $800 and $1150