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You conducted a t-test in your capstone research. You did not find a statistically significant difference between your groups even though your sample size was relatively small. Upon conducting a post hoc power analysis you found that your actual power was 0.57. What should you do? Is there a problem with having a power less than 0.80 when you do not have significant differences?
A poll reported that 80% of adults were satisfied with the job major airlines were doing. Suppose 12 adults are selected at random and the number who are satisfied are recorded. find the probability that 9 or more are satisfied with the airlines b..
The 1996 GSS asked, "If husband in family wants children, but wife makes decision that she doesn't want any children. If standard error is 0.01429, determine the 96 % confidence interval for population proportion who would say yes.
a toll bridge charges 1.00 for passenger cars and 2.50 for other vehicles. suppose that during daytime hours 60 of all
At a large commercial bakery, one of the measures used to evaluate employees is number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and the broken co..
suppose the monthly income of assistant managers of our local banks are normally distributed with mean of 40000 and a
Time to help a stranger was investigated by a group of undergraduate psychology majors as a part of their Introduction to Research Methods course.
What is the level of measurement for these items related to the newspaper business?
the 92 million americans of age 50 and over control 50 percent of all discretionary income aarp bulletin march 2008.
in the biomedical engineering field a study of coronary artery disease had three possible partitioning events b1 the
explain how the power of a hypothesis test is influenced by each of the following. assume that all other factors are
Determine percentage of boys in this age range have carbohydrate intake above 140g/1000cal and carbohydrate intake below 90g/1000cal?
Estimate the probability that a randomly selected jar will have a fill, x, that is out of specification. Assume that the process is in control and that the population of all jar fills is normally distributed.
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