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GRAPHICAL ANALYSIS In Exercises 5154, (a) use a graphing utility to graph the function

College Algebra | 8th Edition | ISBN: 9781439048696 | Authors: Ron Larson ISBN: 9781439048696 370

Solution for problem 51 Chapter 3.2

College Algebra | 8th Edition

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College Algebra | 8th Edition | ISBN: 9781439048696 | Authors: Ron Larson

College Algebra | 8th Edition

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Problem 51

GRAPHICAL ANALYSIS In Exercises 5154, (a) use a graphing utility to graph the function, (b) use the graph to approximate any -intercepts of the graph, (c) set and solve the resulting equation, and (d) compare the results of part (c) with any -intercepts of the graph.

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Week 10 Section 6.3 §6.3Confidence Interval for When x is Normally Distributed, n is Small and Unknown Theorem: Suppose x is a normally distributed random variable. Suppose a SRS of size n 2 is obtained. Then the 1 confidence interval for the mean value of x is given as - xx= sample mean value. - s =sample standard deviation - n = sample size - df = “degrees of freedom” = n­1 A simple random sample of 15 quiz scores yieldsx =4,5,5,6,6,6,7,7,7,7,7,8,8,9,10. a. Find the appropriate tn­1,/2 appropriate for a 90% CI. - Sigma is unknown and n is <30, so we know that 1-  = .90 o .1 o Right Tail Area - n=15 - df= n-1 = 14 - t.05, 141.761 (look on table) b. Cal

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Chapter 3.2, Problem 51 is Solved
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Textbook: College Algebra
Edition: 8
Author: Ron Larson
ISBN: 9781439048696

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GRAPHICAL ANALYSIS In Exercises 5154, (a) use a graphing utility to graph the function