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answer the ff, Determine the test score of John in Statistics if he has a z-score of 1.89. (SD = 4, mean = 80) O

answer the ff,
Determine the test score of John in Statistics if he has a z-score of 1.89. (SD = 4, mean = 80) O 86.56 87.55 87.56 O 87.65A population of 2,800 students from a certain region have normally distributed National Examination scores with a mean of 85 and standard deviation of 5. What is the probability that a randomly selected student has a score below 95? Type your answer..\fGiven that the mean / = 20 and the standard deviation O = 4, find P (15

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