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It is known from the past data that 10 percent of the families in a certain locality sub- scribe to a periodical called Outlook. Of late, there has been some apprehension that this subscription rate has declined. In order to test whether or not there has been a decline, a random sample of 100 families is chosen. It is found that the sample proportion p is 0.07, that is, 7 percent. Can it be con- cluded that the subscription rate has really declined, assuming a 5 percent level of significance?

It is known from the past data that 10 percent of the families in a certain locality sub- scribe to a periodical called Outlook. Of late, there has been some apprehension that this subscription rate has declined. In order to test whether or not there has been a decline, a random sample of 100 families is chosen. It is found that the sample proportion p is 0.07, that is, 7 percent. Can it be con- cluded that the subscription rate has really declined, assuming a 5 percent level of significance?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 2E
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It is known from the past data that 10 percent of the families in a certain locality sub- scribe to a periodical called Outlook. Of late, there has been some apprehension that this subscription rate has declined. In order to test whether or not there has been a decline, a random sample of 100 families is chosen. It is found that the sample proportion p is 0.07, that is, 7 percent. Can it be con- cluded that the subscription rate has really declined, assuming a 5 percent level of significance?
Transcribed Image Text:It is known from the past data that 10 percent of the families in a certain locality sub- scribe to a periodical called Outlook. Of late, there has been some apprehension that this subscription rate has declined. In order to test whether or not there has been a decline, a random sample of 100 families is chosen. It is found that the sample proportion p is 0.07, that is, 7 percent. Can it be con- cluded that the subscription rate has really declined, assuming a 5 percent level of significance?
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