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Bring to mind a real-world situation or problem that could be addressed using an independent- or related-samples t test. You will not need SPSS to complete this Discussion question.
For this situation or problem:
Clearly identify the independent and dependent variables you would study.
Determine whether an independent-samples or related-samples t test is most appropriate and why.
Generate the statistical null and alternative hypotheses.
Describe what information the effect size would tell you that the probability value would not tell you.
Using realistic numbers for values of degrees of freedom, sample size, and t statistic, report hypothetical results in a few sentences using correct APA format.
Suppose that a random sample of 800 early replacement buyers yields a mean number of dealers visited of 1 = 3.3, and that a random sample of 500 late replacement buyers yields a mean number of dealers visited of 2= 4.5.
We are interested in determining if the accident proportions differ between the two age groups:
A random sample of 100 peaches is gathered and the mean diameter is calculated. What is the probability that the sample mean is greater than 3.79 inches.
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
A manager of a small store wanted to discourage shoplifters by putting signs around the store saying "Shoplifting is a crime!" However, he wanted to make sure this would not result in customers buying less.
Since purchasing the software the average delivery time over twenty delivery days was 8.6 hours. At the 0.05 level of significance, test whether the software package has reduced the average time it takes to complete deliveries.
Revenue, The marketing research department for a company that manufactures and sells "notebook" computers established the following price-demand and revenue functions.
Best Electronics, Inc. offers a "no hassle" returns policy. The number of items returned per day follows the normal distribution. The mean number of customer returns is 10.4 per day and the standard deviation is 2.3 per day.
A financial analyst wants to compare the turnover rates, I percent, for shares of oil-related stocks versus other stocks, such as GE and IBM. She selected 32 oil related stocks and 49 other stocks.
Create a 90% confidence interval for mean score on this placement exam for all students.
Develop a probability distribution for the number of students in the sample who watch soap operas.
A rocket fires two engines simultaneously. One produces a thrust of 800N directly forward while the other gives a thrust of 508N at an angle 38.2^circ above the forward direction.
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