Z-Table Practice

Which choice below is NOT true about Z-Tables?

• ALWAYS shows the percentage below a z-score

• Percentages on negative z-score side are all 50% and less

• Percentages on the positive z-score side are all 50% and more

• Some percentages may come out to be negative

What percentage of a normal distribution will fall BELOW a z-score of .76

What percentage of a normal distribution will fall ABOVE a z-score of 1.09?

What percentage of a normal distribution will fall IN BETWEEN z-scores of 1.50 and -1.50?

What Z-SCORE will have 1.29% of the data falling below it?

(Turn 1.24% back into a decimal, find that decimal on the z-table and find the corresponding z-score)

Michelle's SAT score falls 2.12 standard deviations ABOVE the mean

What percentage of SAT scores will fall BELOW Michelle's?

Oscar's GPA falls 1.04 standard deviations BELOW the mean

What percentage of GPA's will be BELOW Oscar's GPA?

The z-table gives the percent of data at or below a z-score.

• True

• Sometimes true, sometimes false

• False

Edwin's SAT score falls .17 standard deviations BELOW the mean

Adrianna's SAT score falls .86 standard deviations ABOVE the mean

What percentage of SAT scores will fall BETWEEN Edwin and Adrianna?

What Z-SCORE will come closest to falling into the 96th percentile of a normal distribution?

(Remember to turn % into a decimal, find closest decimal you can, and then see what z-score is)