 This is a video on finding probabilities using the normal distribution. Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0 degrees Celsius and a standard deviation of 1 degree Celsius. If we were to select the randomly selected thermometer, find the probability it will read between negative 2.972 degrees Celsius and negative 1.373 degrees Celsius. So this is still dealing with a standard normal distribution because the mean is 0 and the standard deviation is 1. So I'm going to end the dead center of my bell curve. I plot 0 as my mean. Then I need to label data values of negative 2.972. That'll be to the left of 0 over here. And negative 1.373. That'll also be to the left of 0. As long as you draw both of these values to the left of 0, your picture is accurate. So I want the area between these two data values. So the area between two data values. How are we going to do this? Well, we're going to use technology. So let's go to Google Sheets. The mean is still 0, the standard deviation is still 1. The lower bound in this case is negative 2.972. The upper bound in this case is negative 1.373. My probability, which is an E6, is four decimal places, 0.0834. So it would be 0.0834, that was found using our technology. Thanks for watching.