Suppose a consumer group suspects that the proportion of households that have three or more cell phones is 39%. A cell phone company has reason to believe that the proportion is not 39%. Before they start a big advertising campaign, they conduct a hypothesis test. Their marketing people survey 186 households with the result that 93 of the households have three or more cell phones. Conduct a hypothesis test to test the cell phone company’s belief at the 5% significance level.  show all steps

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