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Using the data derived from the M&M experiment in class develop one research question from which you will formulate a research hypothesis.
A restaurant claims that its speed of service time is less than 18 minutes. A random selection of 36 service times was collected, and their mean
Conduct a hypothesis test for a single population mean of a quantitative variable equal to a given number.
A regional commuter airline selected a random sample of 25 flights and found that the correlation between the number of passengers and the total weight
I measure writing ability in 4th year students at Cosmopolitan and compare those measures with those of 1st year students. What is my Null Hypothesis?
A random sample of 51 observations was selected from a normally distributed population. The sample mean was x = 88.6 , and the sample variance
Consider the Mission Valley Power Company (MVP), which has over 6000 customers. In response to a request from the Michigan Public Utilities Commission
Use a 0.05 significance level to test the claim that for the runners in the New York City marathon, men and women have ages with different amounts of variation.
Lists times (in seconds) that animated children's movies show tobacco use and alcohol use. The 50 times of tobacco use have a mean of 57.4 sec
The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A sample of 20 chickens shows they laid an average of 20 eggs
To encourage telephone efficiency, a catalog call center issues a guideline that at least half of all telephone orders should be completed within 2 minutes.
A study by the Investment Company Institution (ICI) in 2004, which randomly surveyed 3,500 households and drew upon information from the IRS
The wall street journal reported 28% of people who bank online have cut back on their internet use
A major issue facing many states is whether to legalize casino gambling. Suppose the govenor of one state believes that more than 55% of the state's registered
The director of a state agency believes that the average starting salary for clerical employees in the state is less than $30,000 per year.
Provide the relevant critical value for each of the following circumstances:
Is the mean salary of accountants who have reached partnership status higher than that for accountants who are not partners?
Are students spending less time in studies now (in 2009) than they did in 2002?
Develop one business research question from which you will formulate a research hypothesis that will test two populations.
Identify a research issue, problem, or opportunity that uses data that has absolute zero measurements and ratio level data.
Can a hypothesis test on a recipe for making pancakes from the recipe on the back of the Bisquick box.
How might one know if an error was made in accepting or rejecting the null hypothesis?
The CEO for the Red White and Blue T-Shirt Company expects quality garments produced with a minimum of defective garments.
Jerry's Bargain Department Store spent $50,000 on a training program to improve sales effectiveness of its employees
A consumer watchdog organization wants to see whether Bank N in the northern part of a state has a higher default rate than Bank S in the southern