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
