# Maths B

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths
were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.

1. 0
2. 0
3. 3
1. Z score = score in terms of standard deviations.

Z = (score-mean)/SD

Which Z score is highest?

1. 0
2. 0
posted by PsyDAG
2. For explanation, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.

1. 0
2. 0
posted by PsyDAG

## Similar Questions

1. ### maths a

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did
2. ### Maths B

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did
3. ### maths

Score of Janet in Maths is 25 more than two-third of her score in English. If she scores x marks in English, what is her score in Maths ?
4. ### algebra II URGENT

if peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?
5. ### Algebra II

If Peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?
6. ### math

Adam took five tests and received a grade for each of them. The first test was 92%, the second test was 83%, and the mean of the five tests was 85%. What can you conclude? a. the lowest test score. b. the highest test score. c.
7. ### Math

Sita needs a perfect score of 100 for math test in this year so as to improve on her average score from 84 to 86. How many maths tests were there altogether in this year?
8. ### math

Mike took four tests: English, Math, Science and History. He scored a 74 in English and an 84 in History. The average of the four tests was 72. Math had a better score than Science by 6 points. What was his Science score?
9. ### Math

1) in a possible class, Rosa will take a total of 4 tests. She has already taken 2 of the tests and received scores of 81 and 83. What is the least possible score Rosa can obtain on the third test to still obtain an average score