The null and alternative hypothesis would be: H0:p≥0.2 H1:p<0.2 The test is: left-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals)
The null and alternative hypothesis would be: H0:p≥0.2 H1:p<0.2 The test is: left-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals)
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
Related questions
Question
Hypothesis Test for a Population Proportion
A well-known brokerage firm executive claimed that 20% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 100 people, 13% of them said they are confident of meeting their goals.
Test the claim that the proportion of people who are confident is smaller than 20% at the 0.005 significance level.
The null and alternative hypothesis would be:
H0:p≥0.2
H1:p<0.2
H1:p<0.2
left-tailed
The test statistic is: (to 3 decimals)
The p-value is: (to 4 decimals)
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