Math

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Dear Ms. Hansen's math students, I see you are using wiki in math class. This is a new learning experience for you and me. I will be checking in with you. Mrs. Johnson

__Data, Statistics, And Probability__ //Start out simple...// **The Whole Thing**

15. Two numbers are chosen at random with replacement from this set: (1, 2, 3, 4). The 2 chosen numbers are used as numerator and denominator of a fraction. What is the probability that the fraction represents a whole number? Express your answer as a fraction in simplest form.

//Now try to work this out...// **Building Bacteria** 16. Consider 2 bacteria on a surface. The number of bacteria doubles every hour. Make a table and graph the results for n hours. Analyze the results.

//This will really challenge you...// **What's My Score?**

17. Mrs. O. Angle has 12 students in her advanced algebra class. On a recent test, the average was 80. When Beth asked for her score, Mrs. Angle could not find it, but she did remember adding Beth's score in the average. She also remembered that Beth had passed. These are the scores of the other students: 65, 65, 70, 70, 80, 85, 85, 90, 90, 90, 100 Tell how Mrs. Angle can figure out the missing score. What is that score?

Beth scored a 70. If the average was 80 and there are 12 students ... 80 x 12 = 960

add all of the scores you get the score of 890. Then 960 - 890 = 70, And that is the missing score. JG