Start working on today’s packet. pencil, red pen, highlighter, notebook, graphing calculator 4/30/13 Have out: Bellwork: Start working on today’s packet.

Today is a workday. Complete the worksheet. What’s the probability of you passing this class? 0% if you don’t start on the review worksheet Today is a workday. Complete the worksheet.

pencil, red pen, highlighter, notebook, graphing calculator 4/22/11 Have out: Bellwork: 1) On a recent quiz, the average score was 40 and the standard deviation was 2. Label the normal curve with the scores (and include z–scores). Answer the following: a) What percent of scores are less than 38? b) What percent of scores are between 42 and 44? c) What percent of scores are higher than 46? total:

Recall: 68% 95% 99.7% For a normal distribution, 1 68 ____ % of the data falls within ___ σ of ____ % of the data falls within ___ σ of 95 2 3 ____ % of the data falls within ___ σ of 99.7

2) On a recent quiz, the average score was 40 and the standard deviation was 2. Label the normal curve with the scores (and include z–scores). Answer the following: total: a) What percent of scores are less than 38? +1 50% – 34% = 16% +2 b) What percent of scores are between 42 and 44? c) What percent of scores are higher than 46? +2 50% – 49.85% = 0.15% 47.5% – 34% = 13.5% +1 +2 47.5% +1 49.85% 34% 34% 34 36 38 40 42 44 46 –3 –2 –1 1 2 3 z–score +1 labeled scores +1 labeled z–scores

pencil, highlighter, GP notebook, textbook, graphing calculator 4/20/09 Have out: Bellwork: Expand the following: a) (x – y)4 (x)4 (–y)0 (x)3 (–y)1 (x)2 (–y)2 (x)1 1________ +4________ +6________ +4________ +1________ (–y)3 (x)0 (–y)4 = x4 – 4x3y + 6x2y2 – 4xy3 + y4 b) (2x + 3y)5 (2x)5 (2x)4 (3y)1 (2x)3 (3y)2 (2x)2 (3y)3 (2x)1 (3y)4 (3y)5 1____ +5________ +10________ +10________ +5________ +1____ = 32x5 + 249x4y + 720x3y2 + 1080x2y3 + 810xy4 + 243y5

pencil, red pen, highlighter, notebook, graphing calculator 4/26/10 Have out: Bellwork: 1) Compute the standard deviation of the data set {6, 3, 4, 4, 8}. 2) On a recent quiz, the average score was 40 and the standard deviation was 2. Label the normal curve with the scores (and include z–scores). Answer the following: a) What percent of scores are less than 38? b) What percent of scores are between 42 and 44? c) What percent of scores are higher than 46?

1) Compute the standard deviation of the data set {6, 3, 4, 4, 8}. 2 3 (6 – 5)2 = (1)2 = 1 1 (3 – 5)2 = (–2)2 = 4 5 (4 – 5)2 = (–1)2 = 1 6 (4 – 5)2 = (–1)2 = 1 (8 – 5)2 = (3)2 = 9