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Social Studies, 30.11.2019 06:31 odriskel49
The average life expectancy of tires produced by the whitney tire company has been 40,000 miles. management believes that due to a new production process, the life expectancy of its tires has increased. in order to test the validity of this belief, the correct set of hypotheses is
a. h_0: mu < 40,000 h_a: mu greaterthanorequalto 40,000
b. h_0: mu lessthanorequalto 40,000 h_a: mu > 40,000
c. h_0: mu > 40,000 h_a: mu lessthanorequalto 40,000
d. h_0: mu greaterthanorequalto 40,000 h_a: mu < 40,000
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