Hypothesis test for difference between mean equal variance

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Reference no: EM1312139

Paper
1	3.481	3.448	3.485	3.475	3.472
	3.477	3.472	3.464	3.472	3.470
	3.470	3.470	3.477	3.473	3.474
2	3.258	3.254	3.256	3.249	3.241
	3.254	3.247	3.257	3.239	3.250
	3.258	3.239	3.245	3.240	3.254

The article measured capability of gauge by measuring weights of 2 sheets of paper. Data is in the table.

a) Check suppositions that data from each sheet are from normal dist.

b) Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.

c) Repeat previous test with α=0.10

d) Compare your answers from parts b and c an describe why are they the same or why are they different.

e) Describe how questions in parts b and c could be replied with confidence intervals.

Reference no: EM1312139

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