Question

In: Statistics and Probability

Supplier 1 Supplier 2 92.0502 91.1204 96.0202 86.8404 83.9802 70.4104 78.5502 77.0104 96.4902 83.9104 107.8802 61.4504...

Supplier 1 Supplier 2
92.0502 91.1204
96.0202 86.8404
83.9802 70.4104
78.5502 77.0104
96.4902 83.9104
107.8802 61.4504
90.7102 70.7104
96.1102 84.4304
86.2302 63.1904
84.0802 69.9304
93.1202 103.7404
80.4702 82.1204
79.0202 93.9804
94.0602 72.7204
100.0602 58.1804
73.8902 73.5404
83.6902 74.7804
82.6202 84.1404
90.1102 85.5604
69.4902 62.4204
94.8702 73.2604
81.5502 94.3504
81.4802 87.4104
88.9502 90.0304
97.6202 75.8104
88.9502 89.8804
82.6202 79.6304
73.9302 63.8304
77.2802 82.2404
69.7702 73.0404
65.1502 88.9804
94.6202 78.3604
71.6902 98.3704
81.9302 71.2404
73.2002 61.7704
77.5702 97.7604
64.2502 77.7404
83.0702 82.3104
60.2802 60.5204
81.7902 79.3504
62.8802 66.3104
91.1402 78.2604
94.2302 106.6304
85.8602 75.8304
94.3602 94.0104
84.0302 81.7404
89.0402 83.4804
85.0302 90.8704
76.8802 87.0404
72.3402 75.7504

a) What is the lower limit of the 95% confidence interval? Give your answer to three decimal places.

b) What is the upper limit of the 95% confidence interval? Give your answer to three decimal places.  
c) Based on this interval, does the claim that mean RC rating is the same for both suppliers seem reasonable?

No because 0 is not inside the interval.

Yes because 0 is not inside the interval.  

No because 0 is inside the interval.

Yes because 0 is inside the interval.

Solutions

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