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MATH 40 SP 2011 HMWK SESSION 12

# MATH 40 SP 2011 HMWK SESSION 12 - MATH 40 SESSION 12...

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Unformatted text preview: MATH 40 SESSION 12: 3/29/11 HOMEWORK ASSIGNMENT: SESSION 12 DUE DATE: 4/5/11 (1) Read the textbook: Section 9.1, pages 298-300 Sections 9.2 and 9.3 (2) Homework problems: (a) 9.23 (b) 9.24 (c) 9.25 (d) 9.44 (e) 9.45 (f) 9.47 NOTE : All of the problems ask you to determine the p-value. Since software is required for this, you are not responsible for determining the p-value. But you must be able to interpret it, so we will focus on that. 9.23 (a) 1 : 8.17 : 8.17 H H μ μ = ≠ Decision rule: Reject H if |t STAT | > 2.0096 or p-value < 0.05 d.f. = 49 Golden Gate University Math 40 – SP ’11 Instructor: Chris Clark 1 Test statistic: 5251 . 1 50 0.051/ 8.17- 8.159 /- = =- = n S X t STAT μ p-value = 0.1337 Decision: Since |t STAT | < 2.0096 and the p-value of 0.1337 > 0.05, do not reject H . There is not enough evidence to conclude that the mean amount is different from 8.17 ounces. (b) The p-value is 0.1337. If the population mean is indeed 8.17 ounces, the probability of obtaining a sample mean that is more than 0.011 ounces away from 8.17 ounces is 0.1337....
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MATH 40 SP 2011 HMWK SESSION 12 - MATH 40 SESSION 12...

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