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Cost of Braces The average cost for teeth straightening with metal braces is approximately $5302. A nationwide franchise thinks that its cost is below that figure. A random sample of 26 patients across the country had an average cost of $5275 with a standard deviation of $626. At =α0.025, can it be concluded that the mean is less than $5302? Assume that the population is approximately normally distributed. (a) State the hypotheses and identify the claim. (b) Find the critical value. (c) Compute the test value. (d) Make the decision. (e) Summarize the results

Cost of Braces The average cost for teeth straightening with metal braces is approximately $5302. A nationwide franchise thinks that its cost is below that figure. A random sample of 26 patients across the country had an average cost of $5275 with a standard deviation of $626. At =α0.025, can it be concluded that the mean is less than $5302? Assume that the population is approximately normally distributed. (a) State the hypotheses and identify the claim. (b) Find the critical value. (c) Compute the test value. (d) Make the decision. (e) Summarize the results

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 58CR
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Cost of Braces The average cost for teeth straightening with metal braces is approximately $5302. A nationwide franchise thinks that its cost is below that figure. A random sample of 26 patients across the country had an average cost of $5275 with a standard deviation of $626. At =α0.025, can it be concluded that the mean is less than $5302? Assume that the population is approximately normally distributed.

(a) State the hypotheses and identify the claim.

(b) Find the critical value.

(c) Compute the test value.

(d) Make the decision.

(e) Summarize the results.

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