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Mathematics, 21.06.2019 23:40
Let x = a + bi and y = c + di and z = f + gi. which statements are true?
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Mathematics, 22.06.2019 02:00
35 ! insert < , > , or = to make the sentence true. 12 __ 25 > =
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Mathematics, 22.06.2019 03:50
Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.
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