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A study of the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain. This rate seemed to be higher than the 15% quoted in a recent Environmetrics article on the average proportion of damaged trees in the Northeast. Does the sample suggest that trees in the Hopkins Forest are more susceptible than trees from the rest of the region?
Comment, and write up your own conclusions based on an appropriate confidence interval as well as a hypothesis test. Include any assumptions you made about the data.
the mean brain volume for a group of healthy adults is collected and the mean brain volume of adults diagnosed with
A professor in the psychology department would like to determine whether there has been a significant change in grading practices over the years.
It is given that 60% of the employees at a large company are women. A simple random sample of 15 employees is selected from this company.
Assume a customer has a two-attribute value function for cars: cost and quality. Cost can range from $5,000 to $10,000 and quality can range from 0 to 10 (a higher score is better).
suppose that you wanted to determine if the males in your sales force differed from the females in your sales force in
??Question: Need a bcg matrix done for lowes 2012 annual sales
Supplier B's tires have an average life of 60,000 miles with a standard deviation of 2,000 miles. Which of the following statements is true?
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
in a gallop poll of 1012 randomly selected adults 9 said that cloning of humans should be allowed. we are going to use
A metropolitan school system consists of two districts- north and south. the north district contains 60% of all students, and the south district contains 40% of all students.
ipad mini weighs less than 11 ounces and is about 50 lighter than the standard ipad. battery tests for the ipad mini
Does the data suggest any discrepancy between the estimators - Is it possible to identify any interaction between estimators and jobs? Explain your answer.
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