Determining the standard deviation of sprinkler systems

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Sprinkler Systems:

A manufacturer of sprinkler systems designed for ?re protection claims that the average activating temperature is at least 135°F. To test this claim, you randomly select a sample of 32 systems and ?nd the mean activation temperature to be 133°F. Assume the population standard deviation is 33°F. At a = 0.10. do you have enough evidence to reject the manufacturer's claim?

Reference no: EM132855353

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