1. Warm-up Day of Ch. 5 Test Solve the following if P(A) = 0.4 and P(B) = 0.6. 1) Solve for the complement of A. P(A c ) = _____ 2) If the events are disjoint solve for 3) If the events are non-mutually exclusive solve for 4) If the events are independent solve for

2. Student of the day! Block 4

3. Student of the day! Block 5

4. Answers to Part 2 (Ch. 3) of Midterm Review 15) A normal curve is a bell-shaped normal distribution curve. 16) 17) % ile in a distribution describes the proportion of numbers in a set of data, that fall below a particular number. 18) 10 th percentile is a # above 10% of the numbers in a distr. The top 10 % is the #, at the 90 percentile. Only 10% of the numbers in the distribution are higher. 19) 20) In a standard normal dist. table, the z-scores given along with proportion of #s that fall below that z-score.

5. Part 2 Midterm Review Continued… 21) Z-score is a number that represents how many standard deviations a number is above or below the mean. 22) 23) Response variable is the dependent variable or (y-value). The explanatory variable is the independent variable or the (x-value). 24) Scatterplots are appropriate for displaying quantitative bivariate data that are related. 25) The explanatory variable always appears on the horizontal axis of a scatterplot. 26) Positive correlation means as the explanatory variable increases so does the response variable. Negative correlation means as the explanatory variable increases the response variable decreases. 27) The correlation describes the strength of the relationship between the two sets of data.

6. Last slide of Midterm Review 28) Data must be quantitative to find the correlation, because the formula to find correlation require the input of two sets of numbers. 29) Correlation coefficient describes the strength of the relationship between bivariate data. Coefficient of determination describes the proportion of the response variable that can be determined by the explanatory variable.

7. Last minute Ch. 5 Questions?

8. Ch. 5 Test Directions Read and complete the Ch. 5 test carefully. When you finish turn in your test in front of the classroom. Start the free response portion of the Midterm Practice Test. (#16 – 31) Work quietly until the last person turns in their test. Once the last person turns in their test, I will resume notebook checks. If you see, the textbook uses a different notation.

9. Answers to Midterm Practice #17 – 28 and Free Response 17) Dotplot 18) Histogram 19) Bar Graph 20) Box & Whisker 21) Systematic 22) Simple Random 23) Stratified 24) Cluster 25) Block Design 26) Repeated Measures 27) Matched Pairs 28) Completely Randomized 29) a. The explanatory variable is the GPA, the response variable is the test score b. There is a moderate positive correlation. There seem to be a couple of outliers in the x. c. Linereg L1, L2 will give you the equation. Make sure the GPAs are under L1 and test scores under L2. for every one point increase in GPA the test score would go up by 0.067 points. The y-intercept

10. Remaining Free Response Answers 30)a. b. 0.62% c. < 63.2 (too little) or > 64.8 (too much) 31)a. 50 males are randomly selected and assigned to the magnet treatment, the remaining are assigned to standard treatment. On a scale of 1 – 10 they rated the amount of pain they were in before and after treatment. b.For the block design 25 males are randomly selected and assigned to the magnet treatment, the remaining are assigned to standard treatment. The 50 females are assigned to the magnet treatment and standard treatment randomly as well. Pain is measured before and after treatment.

11. Preparations for Midterm Bring your calculator! Bring pencils. Bring a book to read silently if you finish early. I will have the Ch. 5 tests graded by Tuesday. If you would like to come by Tuesday and see your test I will be happy to go over it with you. If you would like to ask me any questions to prepare for the midterm over the long weekend e-mail me at mariapaz.stern@gmail.com mariapaz.stern@gmail.com