Understanding Areas Under the Normal Distribution Curve

This video tutorial demonstrates how to use the TI-84 calculator to determine the area under a normal distribution curve. It covers calculating areas to the left and right of specific data points and between two values. The tutorial provides step-by-step instructions for using the normal cumulative density function on the TI-84, emphasizing the importance of setting correct bounds and understanding the distribution's properties.

What is the mean of the normal distribution discussed in the video?

• 30

• 10

• 40

• 20

What is the standard deviation of the normal distribution in the video?

• 8

• 6

• 4

• 2

Which function on the TI-84 calculator is used to find the cumulative area under the normal distribution?

• Inverse Normal

• Normal CDF

• Standard Deviation

• Normal PDF

What is the approximate area to the left of 19?

• 0.701

• 0.601

• 0.501

• 0.401

What is the approximate area to the left of 13?

• 0.040

• 0.140

• 0.340

• 0.240

What is the approximate area to the right of 17?

• 0.873

• 0.773

• 0.673

• 0.573

What is the approximate area to the right of 22?

• 0.509

• 0.209

• 0.309

• 0.409

What is the lower bound when finding the area to the right of a value?

• Zero

• The given value

• Negative infinity

• The mean

What is the approximate area between 13 and 26?

• 0.893

• 0.793

• 0.993

• 0.693

When finding the area between two values, what are the bounds set to?

• Negative and positive infinity

• The two given values

• Zero and one

• Mean and standard deviation