Transcript 5.3 Normal Distributions: Finding Values

5.3 Normal Distributions: Finding Values
• Key Concepts:
– Finding a z-score given an area below the
Standard Normal Curve
– Transforming a z-score to an x-value
– Finding a specific data value for a given
probability
5.3 Normal Distributions: Finding Values
• In previous sections, we were asked to find the
percentage of observations that lie above/below a
given value or between two values.
• In this section, we will be given the percentage and
asked to find the corresponding data value or
values.
Finding z-scores
#2 p. 257
#4
What if the cumulative area = 0.95?
What if the cumulative area = 0.7530?
#12
5.3 Normal Distributions: Finding Values
• More practice finding z-scores
#26 p. 257
#30 p. 258
• We can use what we have learned to convert from
z-scores to data values.
#34 p. 258 (Kidney Transplant Waiting Times)
#36 p. 259 (Ice Cream Consumption)
• Challenge!
#42 p. 259 (Statistics Grades)