Math 201 Practice Final

# Math 201 Practice Final - Math 201 Practice Final Please...

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Math 201 Practice Final Please work out each of the given problems. Credit will be based on the steps that you show towards the final answer. Show your work. Printable Key Problem 1 Match the following hypotheses and estimates with the appropriate test statistic or confidence interval. Explain your reasoning. i) A confidence interval for a population mean. ii) A confidence interval for a population proportion. iii) A confidence interval for the difference between two independent population means iv) A confidence interval for the difference between two population proportions. v) A confidence interval for paired differences (dependent samples). vi) A confidence interval for the value of y given a value of x using a regression line. vii) A hypothesis test for a population mean. viii) A hypothesis test for a population proportion. ix) A hypothesis test for the difference between two independent population means x) A hypothesis test for the difference between two population proportions. xi) A hypothesis test for paired differences (dependent samples). xii) Chi squared test for independence. xiii) Chi squared test for goodness of fit. A. Are automobile prices higher in South Lake Tahoe then in Sacramento. Fifty Subaru Legacy's from the South Tahoe dealership and fifty from the Sacramento dealership were sold last month and recorded Solution B. Does the color of the paper used for a final exam influence performance? 200 students were randomly given the same test on blue, red, and white paper. The number of A's, B's, C's, D's and F's for each color were tabulated. Solution C. Is honey a better medicine for small wounds than conventional salves? Currently 9% of the wounds that are treated with conventional salves end up infected. 150 wounds in a study group were treated with honey. Solution D. How much of the food that you buy ends up being thrown out? A refrigerator was monitored that had 45 perishable items. Solution

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E. How long can you expect to live if your cholesterol level is 230 ? Data has been taken from 45,000 people with varying levels of cholesterol. Solution F. How much better has the NASDAQ done than the Dow Jones Industrial Average this year? The daily point gains and losses have been charted since January 2. Solution G. What are the low and high estimates for the number of Kokanee salmon that will run in Trout Creek this fall? Data has been collected over the last forty years. Solution Problem 2 Your business is being investigated about unfair promotion practices with regard to race. Your policy is to promote 20% of your employees. Your current staff consists of 200 Caucasians, 50 Hispanics, 30 African Americans, and 20 classified as other. Below is a table that shows the number of employees that were promoted last year. Caucasian
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## This note was uploaded on 04/16/2010 for the course MATHEMATIC 1231 taught by Professor Driscoll during the Spring '10 term at Clayton College of Natural Health.

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Math 201 Practice Final - Math 201 Practice Final Please...

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