Mathematics

11 December, 21:50

A calculus exam has a mean of µ = 73 and a standard deviation of σ = 4. Trina's score on the exam was 79, giving her a z-score of + 1.50. The teacher standardized the exam distribution to a new mean of µ = 70 and standard deviation of σ = 5. What is Trina's z-score for the standardized distribution of the calculus exam? a. z = +.75 b. z = + 2.25 c. z = +.50 d. z = + 1.50

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