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4. [42.64 Points] DETAILS DEVORESTAT9 8.1.013. MY NOTES I ' ASK YOUR TEACHER I ' PRACI'ICE ANOTHER The calibration of a scale is to be
4. [42.64 Points] DETAILS DEVORESTAT9 8.1.013. MY NOTES I ' ASK YOUR TEACHER I ' PRACI'ICE ANOTHER The calibration of a scale is to be checked by weighing a 13 kg test specimen 25 tlmes. Suppose that the results of different weighings are independent of one another and that the weight on each trial is normally distributed with o' = 0.200 kg. Let u denote the true average weight reading on the scale. (a) What hypotheses should be tested? 0 H0: ,4 13 Ha: u = 13 O Ho: 14 = 13 H5: ,4 13 O Ho: u s2 13 Ha: M
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