This video shows how to find the area to the left of x = 85 for a normal distribution with mean = 100 and standard deviation = 15 using the TI83/84 graphing calculator.
Source: itsallmine©
This video shows how to use the TI graphing calculator to find the area between 85 and 115 for a normal distribution with mean 100 and sd 15.
Source: itsallmine©
This video shows how to use the TI graphing calculator to find the area on the right of x = 115 for a normal distribution with mean 100 and sd 15.
Source: itsallmine©
This video shows how to find a z score when given an area value of 0.98. Using the TI, we must know the area to the left of the unknown z score: area must be expressed as left cumulative area to use the function invNorm(area, mean, sd). As usual, the mean and sd are optional entries for a standard normal distribution.
Source: itsallmine©
Use the TI to find the z score when given a right side area. First, use the rule of complements to find the area to the left and then use invNorm(area, mean, sd).
Source: itsallmine©
