The type of alloy used in manufacturing electric wire is important in reducing resistance. It hasbeen suggested that the use of one type of alloy can reduce the wire resistance by more than 0.05ohm. An experiment was conducted two types of wire, one with the alloy added and a secondwithout the allow added. The mean resistances of 32 samples of each type of wire resulted in amean resistance of the wire with alloy added being 0.136 ohm and the resistance of the wirewithout the allow added was 0.083 ohm. The standard deviation associated with this type ofexperiment is known to be 0.0045 ohm.a) Test the claim that resistance of electric wire can be reduced by more than 0.05 ohm by addingan alloy to the wire. Use a significance value of 0.05.b) Verify the conclusion in part a) with the p-valuec) Verify the conclusion in part a) with the appropriate confidence intervalNote that in this problem, populations variances are KNOWN. Samples are large enough(greater than 30) that no assumptions are required about population distributions. Also note thatAo is not equal to zero

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 2AGP

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Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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High cholesterol is one of the major risk factors for heart disease. A total cholesterol reading above 190 mg/dL is considered high.A physician is concerned that a patient may be at risk for high cholesterol. In order to accurately measure the patient's average cholesterol level, the physician instructs the patient to come into the physician's office once a week for 12 weeks for a blood lipid screening. The results of the 12 measurements are listed below. 189 186 199 197 190 186 185 200 200 200 185 190 Use the critical value method to test the hypothesis that the patient's cholesterol level is greater than 190 mg/dL, using a significance level of 10%. Assume that the distribution of all cholesterol measurements from this patient is approximately normally distributed. Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list.Determine the test…

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