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To estimate the accuracy of a laboratory scale, a weight known to have a mass...

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To estimate the accuracy of a laboratory scale, a weight known to have a mass of 98 grams is weighed 32 times. The reading of the scale is recorded each time.The following MINITAB output presents a 95% confidence interval for the mean reading of the scale.The assumed standard deviation 2.5000VariablePart 1 of 3MeanScale Reading 32 102.3527 2.5000 0.44194 (101.4865, 103.2189)Part 2 of 3St Dev(a) A scientist claims that the mean reading His actually 98 grams. Is it likely that this claim is true?It is notlikely.SE MeanX95% CI(b) Find the critical value for a 99% confidence interval.The critical value is 98

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