Learning math The Core Plus Mathematics Project (CPMP) is an innovative approac

Dolly Robinson

Dolly Robinson

Answered question

2021-10-16

Learning math The Core Plus Mathematics Project (CPMP) is an innovative approach to teaching Math- ematics that engages students in group investigations and mathematical modeling. After field tests in 36 high schools over a three-year period, researchers compared the performances of CPMP students with those taught using a traditional curriculum. In one test, students had to solve applied Algebra problems using calculators. Scores for 320 CPMP students were compared to those of a control group of 273 students in a traditional Math pro- gram. Computer software was used to create a confidence interval for the difference in mean scores. (Journal for Research in Mathematics Education, 31, no. 3[2000]) Conf level: 95% Variable: Mu(CPMP) – Mu(Ctrl) Interval: (5.573, 11.427) a) What’s the margin of error for this confidence interval? b) If we had created a 98% CI, would the margin of error be larger or smaller?c) Explain what the calculated interval means in context. d) Does this result suggest that students who learn Mathematics with CPMP will have significantly higher mean scores in Algebra than those in traditional programs? Explain.

Answer & Explanation

Velsenw

Velsenw

Skilled2021-10-17Added 91 answers

(a) The margin of error can be calculated as: 
Margoferr or =UpperlimitLowerlimit2=11.4275.5732=2.927
(b) The margin of error is positively related to the confidence level. The increase in confidence level tends to increase the margin of error and vice versa. So, it could be said that the margin of error would be larger for 98% confidence level. 
(c) There is 95% probability that the difference in true mean score of student of CPMP and those of traditional curriculum lies between 5.573 and 11.427.

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