1. PROBLEM SOLVING: 1. Joy and Ligaya took an entrance examination in their dream school. Scores...
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1. PROBLEM SOLVING: 1. Joy and Ligaya took an entrance examination in their dream school. Scores are normally distributed with a mean of 120 and a standard deviation of 10. If Joy's z-score is -0.5 and Ligaya's z-score is 1.5, what were their scores in the examination? 2. X is a normally distributed variable with mean = 30 and standard deviation = 4. Find A. P[X <40] B. P[X>21] C. P[30 1. PROBLEM SOLVING: 1. Joy and Ligaya took an entrance examination in their dream school. Scores are normally distributed with a mean of 120 and a standard deviation of 10. If Joy's z-score is -0.5 and Ligaya's z-score is 1.5, what were their scores in the examination? 2. X is a normally distributed variable with mean = 30 and standard deviation = 4. Find A. P[X <40] B. P[X>21] C. P[30
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