In each of the following situations, state the most appropriate null hypothesis regarding the population mean .
Question:
a. A new type of battery will be installed in heart pacemakers if it can be shown to have a mean lifetime greater than eight years.
b. A new material for manufacturing tires will be used if it can be shown that the mean lifetime of tires will be more than 60,000 miles.
c. A quality control inspector will recalibrate a flowmeter if the mean flow rate differs from 10 mL/s?
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a H 0 8 If H 0 is rejected we can conclude that 8 and that th...View the full answer
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