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Alegbra 1
Mrs. Gifford's class consists of 15 girls and 25 boys. On the first test the mean of the girlsâ€™ scores was 80 and the mean of the boyâ€™s scores was 70. What was the class mean? (Remember the class mean is not just
asked by Bill on December 15, 2017 
Alegbra 1
On the first test the mean of the girlsâ€™ scores was 80 and the mean of the boyâ€™s scores was 70. What was the class mean? (Remember the class mean is not just averaging the two means) On the second test, the class
asked by Bill on December 15, 2017 
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The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of
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Alegbra 1
Mrs. Gifford's class consists of 15 girls and 25 boys. On the first test the mean of the girls’ scores was 80 and the mean of the boy’s scores was 70. What was the class mean? (Remember the class mean is not just averaging the
asked by Bill on December 15, 2017 
Alegbra 1
Mrs. Gifford's class consists of 15 girls and 25 boys. the class mean was 80 and the mean girl’s scores was 75. What was the mean of the boy’s scores?
asked by Bill on December 16, 2017 
Alegbra 1
Mrs. Gifford's class consists of 15 girls and 25 boys. the class mean was 80 and the mean girl’s scores was 75. What was the mean of the boy’s scores?
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Suppose you gave a skill test to 3 different PE classes and want to know if they differ in terms of their scores. The skill tests scores are as follows: Class 1: 23, 21, 19, 22 Class 2: 18, 19, 21, 18 Class 3: 21, 20, 19, 22
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A teacher gives a test to a class of 20 student. Is it possible that 90% of the class scores above average? Give examples of test scores for which this is the case. If not, explain why not?
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Suppose that a set of test scores from a class you teach is symmetric and bellshaped. That's means that there are some scores significantly below the mean and some significantly above the mean, so that it would be inappropriate
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