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There has been much debate over the use of the death penalty. Advocates of the death penalty feel that the penalty will reduce crime.
What are the four levels of measurement scales? Give examples of each and explain in detail.
Using your experience from previous or current employment, provide a business example where you could use a t-test to assist in a business decision
A summary on the daily consumption of caffeine for a sample size of 49 adult women produced:
This data file contains ratings for food, decor, service, and the price per person for a sample of 50 restaurants located in an urban area and 50 restaurants
In an article in the Journal of Statistics Education (vol. 4, no. 2, 1996), Allen Shoemaker describes a study that was reported in the Journal of the American
A student reads that a 95% confidence interval for the mean body mass index (BMI) of young American women is 26.8 ± 0.6
I conducted a blind taste test with 50 subjects (30 women, 20 men) to see if they could tell the difference between bottled and tap water.
Let's say I have a new drug that I think helps diabetics. So I perform clinical trials in accordance with the FDA requirements.
Select one psychological personality assessment instrument or inventory to serve as the basis of this assignment.
Explain why t distribution tends to be flatter and more spread than the normal distribution.
To test the hypothesis that students who finish an exam first get better grades, Professor Barker kept track of the order in which papers were handed in.
The U.S. Fish and Wildlife Service's report on the bass population in the North American lakes indicated average weight of the fish to be 3.0 lb.
Define the null hypothesis. If the null hypothesis is rejected then?
What is a p-value in testing hypothesis?
How do you decide your null and alternative hypotheses?
In a field study of mating behaviour in the Mormon cricket, a biologist noted that some females mated successfully while others were rejected
The duration of human gestation is on average 40.5 weeks. In a maternity ward, we note the gestational age of 100 consecutive newborns.
Suppose that the sales manager of a large automotive parts distributor wants to estimate as early as April the total annual sales of a region
(a) State the hypotheses. (b) State the decision rule and sketch it. (c) Find the test statistic. (d) Make a decision. (e) Estimate the p-value and interpret it
For the preceding problem you should find that there are significant differences among 3 treatments.
To evaluate the effect of a treatment , a sample of n=9 is obtained from a population with a mean of m=40 and the treatment is administered to the individuals
The association of Home Builders provided information on the cost of the most popular home remodeling projects.
Here are heart rates for a sample of 30 students before and after a class break. At a = .05, was there a significant difference in the mean heart rate?
A half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process