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Please provide a 250-300 word explanation for the below discussion question and please include APA style in-text quotation marks, citations, and references!!
Q1. In correlation and regression we are examining relationships between two or more variables (i.e., ad spending and sales). However in most studies we do we cannot say that one variable (ad spending) causes the other (sales). Why not? What has to be the case for us to discuss one variable "causing" another?
an average of 5 cars arrive per hour at a restaurant. assume that the number of cars arriving perhour follows poisson
Researchers at Pharm-X, a pharmaceutical company, are testing and comparing the effects of Drug A and Drug B on participants' allergies. The researchers are using a double-blind procedure to conduct their test.
Write up a brief description of the problem with the conclusion drawn from the hypothesis test. Note that the problem is not in the calculations--assume the calculations are correct--but in the interpretation of the test.
business statisticsinstructions remember to show your work if an answer requires a mathematical solution.1. when the
Describe the advantages and disadvantages of quasi-experiments? What is the fundamental weakness of a quasi-experimental design? Why is it a weakness? Does its weakness always matter?
The population is 500 pounds. At a 80% level, how many elephants need to be weighed so the average weight will be accurate to within 350 pounds?
What is the probability that a diner is an undergraduate and has bought a meal and what is the probability that someone who has bought a meal is a postgraduate?
a manufacturer of a certain type of large machine wishes to buy rivets from one of two manufacturers. it is important
Change the last number in that set from 36 to 14 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Find a research article and clearly define both the null and directional hypothesis that was or could have been tested during the statistical analysis of the data.
Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use alpha = .05
a company employs 300 employees. each year there is a 30 turnover rate for employees. we want to do a normal
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