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Suppose a highlighter manufacturer wanted to find out whether a highlighter lasted longer than the claim of 14 continuous hours. They tested 40 highlighters and recorded the number of continuous hours the highlighter wrote before drying up. Test the hypothesis that the highlighters wrote more than 14 hours. Following are the summary statistics. x bar=14,5 hrs, s= 1.2 hours. Report the test statistic, p-value, the null hypothosis decision. At the 5% significannce level, state your conclusion about the original claim.
A) 0.023
B) 0.155
C) 0.345
D) 0.477
According to the historical data, the life expectancy in the United States is equal to the life expectancy in Japan. A new study has been made to see whether this has changed.
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Use factoring, the quadratic formula, or identities to solve the following equations:
looking for help with this one. i dont see anythign wrong off the bat it seems ok. is the sample size too small?suppose
In a sample of 200 women, 144 of them said they were in debt. Test the claim that women are in deeper debt than men, at a=0.01.
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A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a stan..
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