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Cost of Braces The average cost for teeth straightening with metal braces is approximately $ 5406 . A nationwide franchise thinks that its cost is

Cost of BracesThe average cost for teeth straightening with metal braces is approximately

$

5406

. A nationwide franchise thinks that its cost is below that figure. A random sample of26

patients across the country had an average cost of$

5230

with a standard deviation of$

629. At = 0.005,can it be concluded that the mean is less than$5406? Assume that the population is approximately normally distributed.

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