Homework: pg. 142 #29, 30 pg. 147 #31-33 29.) A. 0.9978 B. 0.0022 C. 0.9515 D. 0.9493 30.) A. 0.0069 B. 0.0069 C. 0.1798 D. 0.1004 31.) A. 0.2266 B. 0.2260 C. 0.6915 32.) A. -0.67 B. 0.25 33.) A. 5.2% B. 55% C. 279 or more days
2.2 Normal Distribution: Using the Calculator
Find the area for each z-score
What is the percentile for 120? E.) IQ Test What is the percentile for 120? What % is between 90 and 110? What % is between 70 and 85?
Examples: Find Z - Score 30% 25%
Find score given percentile ACT Scores: Pg 167—calc steps
Assessing Normality: How can you test if data could possibly be Normal? 1.) Check for bell-shape and symmetric. See if the 68-95-99.7 Rule is true. 2.) Construct a normal probability plot. You are looking for linear data. *You don’t need to know how to make it, just read it.
Normal Probability Plots
Normal Probability Plots
Pg. 157 #43-45, 48, 50 Homework