Understanding Z-scores with TI-84

This video tutorial explains how to find a Z-score for a standard normal distribution using the TI-84 calculator. It covers understanding the probability of a Z-score being greater than a given value, calculating the area to the left of the Z-score, and using the inverse norm function on the TI-84. The tutorial provides step-by-step instructions on entering values and interpreting results, emphasizing the importance of understanding probability and area under the curve.

What is the probability of the Z-score being greater than C in this example?

• 0.3873

• 0.6127

• 0.5

• 1.0

If the probability of Z being greater than C is 0.6127, what is the area to the left of C?

• 0.3873

• 1.0

• 0.5

• 0.6127

Which function on the TI-84 calculator is used to find the Z-score?

• Standard Deviation

• Inverse Norm

• Normal CDF

• Normal PDF

What values should mu and sigma be set to when finding a Z-score using the TI-84?

• Mu = 1, Sigma = 0

• Mu = 0, Sigma = 1

• Mu = 1, Sigma = 1

• Mu = 0, Sigma = 0

What is the approximate Z-score found in this example?

• -0.6127

• 0.2864

• -0.2864

• 0.6127