Math Solutions

[Solution Library] To test the null hypothesis that the average lifetime for a particular brand of bulb is 725 hours versus the alternative that the average lifetime

Question: To test the null hypothesis that the average lifetime for a particular brand of bulb is 725 hours versus the alternative that the average lifetime is different from 725 hours, a sample of 100 bulbs is used. If the standard deviation is 50 hours and is equal to 0.01, what values for \[\bar{x}\] will result in rejection of the null hypothesis.

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