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A computer manufacturer believes that the proportion of hardware malfunctions is different in humid climates than...

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Basic Math

A computer manufacturer believes that the proportion of hardwaremalfunctions is different in humid climates than in dry climates.To test this claim, the manufacturer takes a random sample of 400machines sold in Florida (humid) and 400 machines sold in Arizona(dry). The manufacturer finds that 44 of the machines in Floridaand 24 of the machines in Arizona had hardware malfunctions.

a. Specify the competing hypotheses to test the manufacturer'sclaim.

b. Calculate the value of the relevant test statistic.

c. Compute the p-value. Does the evidencesupport the computer manufacturer's claim at the 10% significancelevel?

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The codes are libraryrateratiotestrateratiotestc4424c400400conflevel    See Answer
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