www.awn.connectmath.com Cost of Braces The average cost for teeth straightening with metal braces is approximately $5350. A nationwide franchise thinks that its cost is below that figure. A random sample of 27 patients across the country had an average cost of $5153 with a standard deviation of $631. At a- 0.10, can it be concluded that the mean is less than $5350? Assume that the population is approximately normally distributed. Part 3 of 5 (c) Compute the test value. Always round I score values to at least three decimal places.

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Cost of Braces The average cost for teeth straightening with metal braces is approximately $5350. A nationwide franchise thinks that its
cost is below that figure. A random sample of 27 patients across the country had an average cost of $5153 with a standard deviation of
$631. At a=0.10, can it be concluded that the mean is less than $5350? Assume that the population is approximately normally distributed.
Part 3 of 5
(c) Compute the test value. Always round t score values to at least three decimal places.
Transcribed Image Text:www-awn.connectmath.com Cost of Braces The average cost for teeth straightening with metal braces is approximately $5350. A nationwide franchise thinks that its cost is below that figure. A random sample of 27 patients across the country had an average cost of $5153 with a standard deviation of $631. At a=0.10, can it be concluded that the mean is less than $5350? Assume that the population is approximately normally distributed. Part 3 of 5 (c) Compute the test value. Always round t score values to at least three decimal places.
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