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Mathematics, 31.07.2019 19:30 uuuugggghhhh2463

Aresearcher studied the radioactivity of asbestos. she sampled 81 boards of asbestos, and found a sample mean of 193.2 bips, and a sample standard deviation of 49.5 bips. (a) obtain the 94% confidence interval for the mean radioactivity. (b) (i) according the interval that you got, is 200 bips a plausible value for the true mean? (ii) what about 210 bips?

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