A distribution of values is normal with a mean of 99.4 and a standard deviation of 81.6. Find the probability that a randomly selected value is greater than 319.7. P(x > 319.7) = Enter your answer as a number accurate to 4 decimal places. Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 5.9-in and a standard deviation of 0.8-in. Due to financial constraints, the helmets will be designed to fit all men except those with head breadths that are in the smallest 2% or largest 2%. What is the minimum head breadth that will fit the clientele? min = What is the maximum head breadth that will fit the clientele? max= Enter your answer as a number accurate to 1 decimal place. A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.3 years, and standard deviation of 2.6 years. The 3% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place.