2.The time to failure (in hours) of an electronic components subjected to an accelerated life test...

 

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2.The time to failure (in hours) of an electronic components subjected to an accelerated life test is of interest to a senior Engineer. To accelerate the failure test, the units were tested at an elevated temperature and the results are shown below. 127 140 121 129 124 125 133 131 121 124 160 118 119 125 142 125 137 142 130 123 137 129 136 129 128 125 131 128 140 123 125 151 122 120 141 124 126 124 133 131 2.1 Construct an ordered stem and leaf plot of the data. 2.2 Compute the average, median and interquartile range of the data. 2.3 Comment about the distribution of the data. 3. A random sample of eight fiber specimens is selected, having an average tensile strength of 127 and variance of 4. 3.1 Using a = 2%, does the mean tensile strength surpass 130? %3D 3.2 Compute and interpret the power of your test. 2.The time to failure (in hours) of an electronic components subjected to an accelerated life test is of interest to a senior Engineer. To accelerate the failure test, the units were tested at an elevated temperature and the results are shown below. 127 140 121 129 124 125 133 131 121 124 160 118 119 125 142 125 137 142 130 123 137 129 136 129 128 125 131 128 140 123 125 151 122 120 141 124 126 124 133 131 2.1 Construct an ordered stem and leaf plot of the data. 2.2 Compute the average, median and interquartile range of the data. 2.3 Comment about the distribution of the data. 3. A random sample of eight fiber specimens is selected, having an average tensile strength of 127 and variance of 4. 3.1 Using a = 2%, does the mean tensile strength surpass 130? %3D 3.2 Compute and interpret the power of your test.

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