The length of time it takes for a manufacturer to build a car is normally distributed with a mean of 20 hours and a standard deviation of 1.5 hours. What percent of cars are made in less than 17 hours? What percent of cars take between 19 and 22 hours to make? What percent of cars take between 19 and 22 hours to make? Show work.
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
- The length of time it takes for a manufacturer to build a car is
normally distributed with a mean of 20 hours and a standard deviation of 1.5 hours. What percent of cars are made in less than 17 hours? What percent of cars take between 19 and 22 hours to make?
- What percent of cars take between 19 and 22 hours to make? Show work.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
