Part 0 4 Part 1 of 4 Calibrating a scale Making sure that the scales...
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Part 0 4 Part 1 of 4 Calibrating a scale Making sure that the scales used by businesses in the United States are accurate is the responsibility of the National Institute for Standards and Technology NIST in Washington D C Suppose that NIST technicians are testing a scale by using a weight known to weigh exactly 1000 grams The standard deviation for scale reading is known to be a 2 0 They weigh this weight on the scale 55 times and read the result each time The 55 scale readings have a sample mean of x 1000 6 grams The scale is out of calibration if the mean scale reading differs from 1000 grams The technicians want to perform a hypothesis test to determine whether the scale is out of calibration Use the a 0 10 level of significance and the P value method with the TI 84 calculator State the appropriate null and alternate hypotheses Ho H 6 This hypothesis test is a choose one test 7 O 0 0 0 0 0 8 Mich 8 00 E 200 ola
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