1. Heather Carielli is a former student who earned a Master's degree at the University of Arkansas. When she randomly selected 16 new textbooks in the college bookstore, she found that they had prices with a mean of $70.41 and a standard deviation of $19.70. Is there sufficient evidence to warrant rejection of a claim in the college catalog that the mean price of a textbook at the college is less than $75.00? Use a 0.05 significance level.
Accept or reject the null hypothesis?
2. In a Gallop poll of 1012 randomly selected adults, 9% said that cloning of humans should be allowed. Use a 0.05 significance level to test the claim that less than 10% of all adults say that cloning of humans should be allowed.
Accept or reject the Null Hypothesis?
3.
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Filtered Kings
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Non-Filtered Kings
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Sample Size of 21.
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Sample Size of 8.
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Mean of 0.94
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Mean of 1.65
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Standard Deviation of 0.31
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Standard Deviation of 0.16
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Use a 0.05 significance level to test the claim that king-size cigarettes with filters have a lower mean amount of nicotine than the mean amount of nicotine in non-filtered king-size cigarettes.