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According to a research,54.0%of households nationwide used natural gas for heating during a year. Recently, a survey of 4800randomly selected households showed that 55.0%used natural
According to a research,54.0%of households nationwide used natural gas for heating during a year. Recently, a survey of 4800randomly selected households showed that 55.0%used natural gas. Use a 0.05 significance level to test the claim that the 54.0%national rate has changed.
What is the hypothesis? Z? P?
conclusion?
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