a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products, ( p1p1 ), will be no higher than the percentage of defectives found in a competitor's line, ( p2p2 ). To test this statement, the retailer took a random sample of 205205 of the salesman's cellular phones and 155155 of the competitor's
A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products, ( p1p1 ), will be no higher than the percentage of defectives found in a competitor's line, ( p2p2 ). To test this statement, the retailer took a random sample of 205205 of the salesman's cellular phones and 155155 of the competitor's cellular phones. The retailer found that 2424 of the salesman's cellular phones and 88 of the competitor's cellular phones were defective. Does the retailer have enough evidence to reject the salesman's claim? Use a significance level of α=0.05α=0.05 for the test.Step 1 of 6 : State the null and alternative hypotheses for the test.
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