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You collect a sample of 100 observations on monthly spending on fast food. The sample mean is $96 and the sample variance is 400. Test the null hypothesis that the population mean is $100. Show your work.
In addition, the cruise line has decided to plan for an additional 25% more meals than bookings. Formulate the appropriate linear program (Constraints and Objective Function only)
A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the household, age of the head of the household, curr..
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance.)
What specific type of visually reported data might you use? What type of decision would you expect from those responding to your visually reported data?
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11.
The airline must sell 150 seats to break even on this particular flight. On what percent of the flights does the airline make money?
Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.
Using the Hypothesis Tests Two Sample file and a .05 significance level, test whether there is a difference in the mean salary for men versus women.
There is a program for STD/HIV/pregnancy education/prevention called Postponing Sexual Involvement (PSI) run in Atlanta. Evaluation data collected at the end of ninth grade as a follow-up to the program compared two group of adolescents
How large a sample should we take if we wish the 95% margin of error to be plus or minus $15.00. Assume from previous studies that the standard deviation is $120.
A random sample of n = 4 scores is chosen from the population with µ = 80 and σ = 20. On average, how much difference would you expect between sample mean and population mean?
According to a recent survey of 500 randomly selected residents of Popular City, it was found that 38% are in favor of raising city taxes in order to build a new stadium for the local baseball team. (a) What is the population of interest of the su..
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