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invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of executives with retirement fund investments in the bond market is significantly lower than .57?

invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of executives with retirement fund investments in the bond market is significantly lower than .57?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 4GP
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Question
Brokers generally agree that bonds are a better investment during times of low interest rates than during times of high interest rates. A survey of executives during a time of low interest rates showed that 57% of them had some retirement funds invested in bonds. Assume this percentage is constant for bond market investment by executives with retirement funds. Suppose interest rates have risen lately and the proportion of executives with retirement investment money in the bond market may have dropped. To test this idea, a business analyst randomly samples 215 executives who have retirement funds. Of these, 91 now have retirement funds invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of executives with retirement fund investments in the bond market is significantly lower than .57? Appendix A Statistical Tables (Round the intermediate values to 3 decimal places, e.g. 15.254. Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we
Transcribed Image Text:Brokers generally agree that bonds are a better investment during times of low interest rates than during times of high interest rates. A survey of executives during a time of low interest rates showed that 57% of them had some retirement funds invested in bonds. Assume this percentage is constant for bond market investment by executives with retirement funds. Suppose interest rates have risen lately and the proportion of executives with retirement investment money in the bond market may have dropped. To test this idea, a business analyst randomly samples 215 executives who have retirement funds. Of these, 91 now have retirement funds invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of executives with retirement fund investments in the bond market is significantly lower than .57? Appendix A Statistical Tables (Round the intermediate values to 3 decimal places, e.g. 15.254. Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we
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