What makes the normal distribution a probability distribution?
· In a normal distribution, what percentage of the area under a normal curve is between µ - σ and µ + σ?
· In a normal distribution, what percentage of the area under a normal curve is between µ - σ and µ + 2σ?
· Suppose you are interested in how long it takes to get your food at a restaurant. Now, suppose this distribution is approximately normal with an average of eight minutes and a standard deviation of two minutes. If you made a control chart for this data, what would be the highest control limit?
· Using the above scenario, suppose someone gets the food after exactly 11 minutes. How many standard deviations from the mean is this value of 11?
· Using the above scenario, what is the probability that someone would get the food after more than 11 minutes?
· Using the standard normal distribution, find the area below z=-0.8.
· Using the standard normal distribution, find the area above z=-0.8.
· Using the standard normal distribution, find the area between z=-0.8 and z=2.1.
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