Question
A manufacturer is interested in the output voltage of a power supply used in a PC....
A manufacturer is interested in the output voltage of a power supply used in a PC. Output voltage is assumed to be normally distributed, with standard deviation 0.25 V, and the manufacturer wished to test Upper HSubscript 0 Baseline : μ equals 9 V against Upper HSubscript 1 Baseline : μ not-equals 9 V, using units. Statistical Tables and Charts (a) The critical region is x overBar less-than 8.83 or x overBar greater-than 9.17. Find the value of alpha. Round the answer to 3 decimal places. alpha equals . the tolerance is +/-2% (b) Find the power of the test for detecting a true mean output voltage of 9.09 V. Round the answer to 3 decimal places. The power of the test is . the tolerance is +/-2%
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