The video tutorial explains how to use the TI-84 calculator to determine the probability of annual rainfall in a region based on a normal distribution. It covers calculating the percentage of years with rainfall less than 46 inches, more than 32 inches, and between 38 and 43 inches. The tutorial provides step-by-step instructions on setting bounds and using the normal cumulative density function on the calculator.

What is the mean annual rainfall in the given region?

• 32 inches

• 46 inches

• 5.4 inches

• 42.2 inches

What is the standard deviation of the annual rainfall?

• 46 inches

• 42.2 inches

• 32 inches

• 5.4 inches

What percentage of years have an annual rainfall of less than 46 inches?

• 97.1%

• 34.1%

• 75.9%

• 50%

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

• Normal Cumulative Density Function

• Standard Deviation Function

• Mean Calculation Function

• Graphing Function

What is the lower bound used for calculating the area to the left of 46 inches?

• 99999

• 32

• 46

• Negative 99999

What percentage of years have an annual rainfall of more than 32 inches?

• 50%

• 97.1%

• 75.9%

• 34.1%

What is the exaggerated upper bound used for calculating the area to the right of 32 inches?

• 32

• Negative 99999

• 999999

• 46

What percentage of years have an annual rainfall between 38 and 43 inches?

• 75.9%

• 97.1%

• 34.1%

• 50%

What is the lower bound used for calculating the area between 38 and 43 inches?

• 46

• 32

• 43

• 38

What is the upper bound used for calculating the area between 38 and 43 inches?

• 32

• 46

• 38

• 43