(a) State the null hypothesis H. and the alternative hypothesis H₁. H₁ :O :0 H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the two critical values. (Round to three or more decimal places.) and (e) Can we conclude that the proportion of high school seniors who believe that "getting rich" is an important goal has changed? O Yes O No H O P S 0=0 OSO 0#0 |x 0 X 5 ?

(a) State the null hypothesis H. and the alternative hypothesis H₁. H₁ :O :0 H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the two critical values. (Round to three or more decimal places.) and (e) Can we conclude that the proportion of high school seniors who believe that "getting rich" is an important goal has changed? O Yes O No H O P S 0=0 OSO 0#0 |x 0 X 5 ?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

100%

A decade-old study found that the proportion,

, of high school seniors who believed that "getting rich" was an important personal goal was

75%

. A researcher decides to test whether or not that percentage still stands. He finds that, among the

240

high school seniors in his random sample,

186

believe that "getting rich" is an important goal. Can he conclude, at the

0.10

level of significance, that the proportion has indeed changed?

Perform a two-tailed test. Then complete the parts below.

Carry your intermediate computations to three or more decimal place