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Suspecting that television repair shops tend to charge women more than they do men, Emily disconnected...

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Basic Math

Suspecting that television repair shops tend to charge womenmore than they do men, Emily disconnected the speaker wire on herportable television and took it to a sample of 12 shops. She wasgiven repair estimates that averaged $85, with a standard deviationof $28. Her friend John, taking the same set to another sample of 9shops, was provided with an average estimate of $65, with astandard deviation of $21. Assuming normal populations with equalstandard deviations, use the 0.05 level in evaluating Emily’ssuspicion

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H0H1 The pooled variancesp2 n1 1s12 n2 1s22n1 n2 2 11 282 8 21212 9 2 6396The test    See Answer
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