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It was claimed recently that more than 65% of high school students in the United States use computers for educational purposes. We wish to examine this claim. We choose a random sample of 170 U.S. high school students and find that 113 of these students use computers for educational purposes. Based on this, can we conclude, at the 0.05level of significance, that more than 65% of high school students in the United States use computers for educational purposes? In your answers, denote the proportion of all U.S. high school students who happen to use computers for educational purposes by p.
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Perform a one-tailed test.
The H0 is
H1 is mean
What type of test statistic is this?
The value of the test statistic is: (round to at least three decimal places)
The critical value @ the 0.05 level of significance: (round to at least three decimal places)
Can we conclude that more than 65% of high school students in the United States use computers for educational purposes?
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Solution Preview
The H0: p=0.65
H1: p>0.65
test statistic : z test
One tail test
Standard Error = …
