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9. A population of scores forms a normal distribution with a u = 80 with o = 12. For a sample of n =4, what

9. A population of scores forms a normal distribution with a u = 80 with o = 12. For a sample of n =4, what proportion of scores is between 74 and 86'? a. about 19% b. about 33% e. about 68% (1. about 95%

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