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Question: A national survey claims that people buy music compact disks in equal percentages for the following five age groups: 14 -18, 19 - 23, 24 - 28, 29 - 33, and over 33. A sample of the ages of 100 CD buyer's at Hastings, on Fry Blvd, gave these data: 15, 21, 18, 30, and 16, for the sequence of age groupings, respectively. At "alpha" = 0.01 can we conclude that the local numbers are the same as the national survey?
There are four conditions/requirements that must be met in order to perform simple linear regression. For each of the conditions below, choose the technique that should be used to determine whether or not that the condition is met.
50 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 335 seconds.
Discuss three measures of central tendency for the dependent variable. Is this distribution skewed? If so, in what direction? Explain your answer. Why would you NOT attempt to determine the central tendency of the independent variables?
in order to monitor the ecological health of the florida everglades various measurements are recorded at different
Is the threat of being shot by a hunter. Hazards associated with hunters. Then why is hunting allowed? Suits in the deep woods?
Find out the regression equation Determine the value of Rsquare? Comment on value.
Thirty-five percent of the Democrats and 70% of the Republicans favor the bill. The bill needs a simple majority to pass. Using a probability tree, determine the probability that the bill will pass.
What is the probability that the percentage in the sample will deviate from the population percentage by no more than 7 percentage points?
Assuming that Richard guesses on all eight questions, find the indicated probabilities. What is the probability that he will answer all questions correctly?
For each of the following three scenarios, state which hypothesis test you would use from among the four introduced so far: the z test, the single-sample t test, the paired-samples t test, and the independent-samples t test.
Assuming the manufacturer's claim is correct, what is the probability the mean of the sample is 12.22 ounces or more? Using your answer form part (a), what do you think of the manufacturer's claim?
He asks you to develop a proposal for the study and submit it to him. Develop the management-research question hierarchy that will help you to develop a specific proposal.
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