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How to test the change in two proportions. A test was conducted to conclude whether gender of a spokesperson affected the likelihood that consumers would prefer a new product.
A study was conducted on the annual incomes of corporate trainers in the state of New York in metropolitan areas having a population less than 100,000 and in metropolitan areas having a population o
To accommodate the relationships including non-linear or curved patterns and multiple factors. We have observed at break-even calculations, scatter plots for estimating demand information as well as t
The new director of special programs in XYZ Corporation felt the customers were waiting too long to receive and complete forms needed to enroll in special programs.
How to find the 95% confidence interval for the true population mean. A stationery store needs to estimate the mean retail value of greeting cards that it has in its inventory
Four machines produce cylindrical steel pins. The pins are subject to diameter specification. A pin might meet the specification, or it might be too thin or too thick.
To find the expected value as well as variance using probability distribution.
Assume we wish to test the hypotheses H0: μ = 10 versus Ha: μ < 10, where μ represents the mean age of non-high school aged children who are member
Explain the given LP problem to maximize the revenue using Excel Solver. Woodco manufactures tables as well as chairs.
Assume we wish to test the hypotheses H0: μ = 10 versus Ha: μ < 10, where μ represents the mean age of non-high school aged children who are members of a large gymnastics
A sociologist is studying many aspects of personal lives of preeminent 19th century scholars. A total of 120 of scholars in her sample had families consisting of two children.
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is corresponding P-value.
Define the linear programming problem using Solver tool as well as Graphical method. Bloomington Brewery produces beer also ale
A certain fraction of antibiotics injected in the bloodstream are "bound" to serum proteins. This is the phenomenon of considerable pharmacological significance, because as the extent of bindi
The square footage of the several thousand apartments in a new development is advertised to be 1250 square feet, on average. A tenant group thinks that the apartments are smaller than advertis
In the last mayoral election in a large city, 47 percent of the adults over the age of 65 voted Republican. A researcher wishes to determine if the proportion of adults over the age of 65 in the cit
Explain the linear programming problem using Solver tool and Graphical method. Explain A farmer in Iowa owns 45 acres of land. He is going to plant all acre with wheat or corn.
Explain How to identify the width of the confidence interval. As the confidence level 1 - α rises the width of the confidence interval.
A real estate agent in the coastal area of Georgia wants to compare the variation in the selling price of homes on the oceanfront with those one to three blocks from ocean.
Describe -To construct the 95% confidence interval for the population mean. The sample mean is 50 and the t-statistic is 1.96 and the standard error of the sample mean is 2.
In a particular market there are 3 commercial television stations, each with its own evening news program from 6:00 to 6:30 P.M. According to a report in this morning's local newspaper, a random sam
Make a probability tree showing all marginal, conditional, and joint probabilities. Make a joint probability table.
Explain -Construct a 95% confidence interval for population mean. Explain the mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is value of q-hat.