To test the given claim using single mean test

Reference no: EM1312528

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?

Filtered Kings	Non-Filtered Kings
Sample Size of 21.	Sample Size of 8.
Mean of 0.94	Mean of 1.65
Standard Deviation of 0.31	Standard Deviation of 0.16

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.

Reference no: EM1312528

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