pencil, red pen, highlighter, notebook, graphing calculator 5/2/13 Have out: On a test, the average score was 78 and the standard deviation was 6. Label the normal curve with the scores (and include z–scores). Answer the following: Bellwork: a) What percent of scores are less than 90? b) What percent of scores are between 66 and 84? c) What percent of scores are higher than 60? d) Tomiko scored a 70 on the test. What is her z–score? Is she an outlier? e) Yasashiku has a z–score of 2.17. What is his raw score? Round your answer to the nearest whole number. total:

a) What percent of scores are less than 90? 50% + 47.5% = 97.5% +2 +1 50% 47.5% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3 z–score +1 labeled scores +1 labeled z–scores

b) What percent of scores are between 66 and 84? 47.5% + 34% = 81.5% +2 +1 47.5% 34% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3 z–score

c) What percent of scores are higher than 60? 49.855% + 50% = 99.85% +2 +1 50% 49.85% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3 z–score

d) Tomiko scored a 70 on the test. What is her z–score d) Tomiko scored a 70 on the test. What is her z–score? Is she an outlier? +1 +1 No, she is not an outlier. +1 e) Yasashiku has a z–score of 2.17. What is his raw score? Round your answer to the nearest whole number. +1 total: +1 60 66 72 78 84 90 96 –3 –2 –1 1 2 3 z–score

It’s time for the study team test! Move into your group and work on the test. Due tomorrow!

It’s time to grade the QUIZ!!! Clear your desk except for a red pen.