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The owner of a fast-food restaurant has found the daily demand for ground beef at her restaurant to be normally distributed, with a mean of 680 lb and a standard deviation of 80 lb. Since the fast-food business is very competitive, the manager would like to ensure that sufficient ground beef is available in her restaurant each day so that the probability is no greater than 2% that the day's supply is exhausted. How many pounds of ground beef should the manager have available for use each day?
describe the characteristics of the f distribution. provide examples.what are we testing when we test for two
Perform a paired-samples t-test for experiment (p = .01 or 99% confidence, two-tailed). Is there a significant difference between the two teaching methods?
Compute the indicated confidence interval for the differenciate in proportions. Suppose that the samples are independent and that they have been randomly selected.
The Dean is hanging his head in shame. He realizes his failings in designing an adequate research design to assess the effects of the move on majors and has revised the proposal.
The cost of gasoline will decrease or stay the same over the next 30 days because of summer holiday travel. What is your alternative hypothesis statement?
The results are shown here. At Alpha = .01, can it be concluded that the sessions help to improve the students' mathematical skills?
How many straight flush possible hands exist in Poker? (5 cards of 5 consecutive ranks, all in 1 suit, including Aces, Kings, Queens and Jacks). Explain.
A sample of 350 hats is selected and the sample mean is 3.25 pounds. Using a level of significance of .10, is there evidence that the population mean weight of the hats is greater than 3.5 pounds? Fully explain your answer.
Average length of trout caught in Swanson lake is u=19.For a random sample of 51 fish caught the mean length was xbar=18.5 inches with estimated standard deviation s=3.2 inches.
Determine the probability that Mary obtains exactly one Head.
Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching ..
in a production process a product goes through one of the assembly lines a b or c and then goes through one of the
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