[Step-by-Step] To test the null hypothesis that the average lifetime for a particular brand of bulb is 750 hours versus the alternative that the average
Question: To test the null hypothesis that the average lifetime for a particular brand of bulb is 750 hours versus the alternative that the average lifetime is different from 750 hours, a sample of 75 bulbs is used. If the standard deviation is known to equal 50 hours and if is equal to 0.01, what values for X-bar will result in rejection of the null hypothesis?
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