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Record the type of research design used. True lab experiment, quasi-experiment, field experiment, or correlation design.
Dr. Reynolds studies the relationship between parental smoking and children's health. He found that the more frequently the parents smoked in the househod, the more likely children in the household had lung damage.
Assuming that a difference (Δ) of 2 lbs. in the mean was important to detect, a maximum Type I Error (α) level of 5%, and the desire to run a two-tailed test, then:
Each party's position must be statistically sound. Include as suitable graphs, computations, and statistical tests.
In this research report you will be analysing a set of data of which can be found in an EXCEL file available for download in the Assessment section of the Blackboard site.
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
What is an interaction? Describe an example and identify the variables within your population (work, social, academic, etc.) for which you might expect interactions?
Test the following claim about the difference between 2 populations proportions p1 and p2 for the given level of significance a and given sample statistic. Is it right-tailed, left-tailed, two-tailed. Assume the sample statistic are from independe..
The average monthly gasoline purchase for a family with 2 cars is 90 gallons. This statistic has a normal distribution with a standard deviation of 10 gallons. A family is chosen at random.
Answer the following three questions based on what you know about statistics now.
A certain airplane has two independent alternators to provide electrical power.
Create a bell curve chart that shows the number of men needed per day for a 10,000 man hour job. The start date is 1/1/2008 and the end date is 6/1/2008.
Determine the point estimate? Give the symbol and value.
If he selects the three brands at random, what is the probability that he will select the following?
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