Use of instructional material on compact discs

Reference no: EM131137796

An education specialist is considering the use of instructional material on compact discs for a special class of third-grade students with reading disabilities. Students in this class are given a standardized test in May of the school year, and μ₁ is the average score obtained on these tests after many years of experience. Let μ₂ be the average score for students using the discs, and assume that high scores are desirable.

(a) What null hypothesis should the education specialist use?

(b) What alternative hypothesis should be used if the specialist does not want to adopt the new discs unless they improve the standardized test scores?

(c) What alternative hypothesis should be used if the specialist wants to adopt the new discs unless they worsen the standardized test scores?

Reference no: EM131137796

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