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In the past, patrons of a cinema complex have spent an average of $5.00 for popcorn and other snacks, with a standard deviation of $1.80. The amounts of these expenditures have been normally distributed. Following an intensive publicity campaign by a local medical society aimed at decreasing soda and unhealthy snack consumption, the mean expenditure for a sample of 18 patrons is found to be $4.40. Does the sample data suggest a decline in spending on movie concessions at the significance level of α = 0.05?
A mean of 2000 pounds and a variance of 2500 pounds. Let X be the mean of any sample of 100 ropes selected at random. find the expected value and the standard error of X.
In a hospital sixty percent of patients are dying of a disease. If on a certain day, eighth patients got admitted in the hospital for that disease.
suppose that a hypothesis test is performed at a small significance level. state the appropriate conclusion in each
What is the difference between resampling (bootstrapping) and double sampling in research? Is there any difference or is the same? Please explain your response?
Modify the spreadsheet above to accommodate the possibility of v not equal to 1. Use excel data table (1 dimensional) to check the sensitivity of the portfolio's std dev as a function of v. Vary v from .05 to 1.5 in .05 increments.
Find the mean, variance, and standard deviation of the number of buyers who purchase white flip-flops
Suppose the mean clear height of all U.S. Class A warehouses is unknown but the standard deviation is known to be 4 feet. What is the value of the mean clear.
In a market study for Target, a researcher found that 70% of customers are repeat customers. If 14 customers are selected at random, find the probability of getting.
a) Identify and explain the shadow prices for each of the resource constraints. b) Which of the resource constraints profit the most and why?
Find the p-value for the test of hypothesis with the alternative hypothesis that the mean time to eat a 1-pound Whoopie Pie is more than 2 minutes.
A large company must hire a new president. The Board of Directors prepares a list of five candidates, all of whom are equally qualified. What is the probability one of the minority candidates is hired
Do you think that the changes in this gateway course had an impact on the DFW rate? Write a report giving your answer to this question. Support your answer with an analysis of the data.
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