An electronic product takes an average of 6 hours to move through an assembly line. If the standard deviation is 0.3 hours, what is the probability that an item will take between 5.2 and 6.6 hours to move through the assembly line? Assume that the distribution is normal. Answer= (Round your answer to 3 decimal places, and report a probability value between 0 and 1.)

The time spent waiting in the line is approximately normally distributed. The mean waiting time is 55 minutes and the standard deviation of the waiting time is 22 minutes. Find the probability that a person will wait for less than 99 minutes. Round your answer to four decimal places.

The average cost for two people to go to a movie is $18. The standard deviation is $4. Assume the cost is normally distributed. Using a graphing calculator find the probability that at any given theater, the cost will be more than $20 for two people to go to the movie. Please round to three decimal places. The probability that at any given theater, the cost will be more than $20 for two people to go to a movie is X S

Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles per day. The mileage per day is distributed normally. Find the probability that a truck drives at least 141 miles in a day. Round your answer to four decimal places.