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Mathematics, 17.12.2019 22:31 noaheault
In pennsylvania the average iq score is 101.5. the variable is normally distributed, and the population standard deviation is 15. a school superintendent claims that the students in her school district have an iq higher than the average of 101.5. she selects a random sample of 30 students and finds the mean of the test scores is 106.4. test the claim at = 0.05
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