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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.
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.
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
Test hypothesis that annual incomes of corporate trainers in areas of more than 500,000 are considerably more than those in areas of less than 100,000. Make use of the 5% level of risk.
By using the maximax criterion, what decision should be made by the decision maker?
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
What can we conclude from this summary, Which of the following statements is correct and In which of the following situations would permutation tests be suitable
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
A survey of college students collected information on several variables: Distance from Home, Age, Major, Gender, and Class. The variable Major is
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Find the probability that the driver was intoxicated or the pedestrian was not intoxicated?
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
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