Question
An electronics shop recently acquired a 3-D printer that can produce two custom parts at once, with one part printed on the left side of
An electronics shop recently acquired a 3-D printer that can produce two custom parts at once, with one part printed on the left side of the printer and the other part printed on the right side of the printer. A quality control manager believes parts are not being printed at aconsistent weight, so they randomly selected6
part designs and have the printer produce those parts. Then, the left and right sidesare weighed and the results recorded. The results (in ounces) are shown in the table below.
Note:d=(LeftRight)
left side (ounces) Right side (ounces)
30.4 28.9
29.8 29.8
30.8 27.2
27.2 23.1
26.9 24.6
28.2 26.1
Assume that both of the populations are normally distributed. At the0.025
level of significance, is there sufficient evidence to show that the left side of the printer has more weight than the right side?
Find the critical value(s) fort.
Do not round your answer. If entering two critical values, use.Use the table below to find your answer:
Probability0.100.050.0250.010.005Degrees of Freedom13.0786.31412.70631.82163.65721.8862.9204.3036.9659.92531.6382.3533.1824.5415.84141.5332.1322.7763.7474.60451.4762.0152.5713.3654.03261.4401.9432.4473.1433.70771.4151.8952.3652.9983.49981.3971.8602.3062.8963.35591.3831.8332.2622.8213.250
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