Mathematics, 30.11.2019 06:31 carealee
Arecent study was conducted to determine the curing efficiency (time to harden) of dental composites (resins for the restoration of damaged teeth) using two different types of lights. independent random samples of lights were obtained and a certain composite was cured for 40 seconds. the depth of each cure (in mm) was measured using a penetrometer. the summary statistics for the halogen light were n_1 = 10, x_1 = 5.35, and s_1 = 0.7. the summary statistics for the luxomax light were n_2 = 10, x_2 = 3.90, and s_2 = 0.8. assume the underlying populations are normal, with equal variances. a. the maker of the halogen light claims that they produce a larger cure depth after 40 seconds than luxomax lights. is there any evidence to support this claim? use alpha = 0.01. b. construct a 99% confidence interval for the difference in population mean cure depths.
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What is the sum of the measures of the interior angles of an octagon
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Someone this is due ! > .< create an equation that can be used to find the value of x? hint: what type of angle pair do you see? here are the questions to answer, after you create an equation: 1) what should be the total amount used for this type of angle pair? explain how you know. 2) what is the answer to your equation for "x"? 3) after you find your answer for "x" in your equation, find the degree measurement for angle aed?
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Arecent study was conducted to determine the curing efficiency (time to harden) of dental composites...
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