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A marketing company conducted a study where women and men were asked to express a preference for one of two commercials-A or B-for the new iPhone XS. For the women, 44 out of 100 preferred commercial A. For the men, 79 out of 140 preferred commercial B.
(a) For these data, do you want to consider one of these categorical variables as an independent variable and the other as a response variable? Give a reason for your answer.
(b) Display these data using an r x c table. What are the values of r and c? Which variable is the column variable and which is the row variable? Give a reason for your choice.
(c) How many cells does the table have?
(d) Explain the difference between joint distribution, marginal distribution, and conditional distribution.
What is the probability that ONE car chosen at random will have -less than 35.5 tons of coal - what is the probability that 20 cars chosen at random will have a mean load weight x¯ less than 35.5 tons of coal?
Generate normal random variables using a Cauchy candidate in Accept-Reject.- Generate gamma G(4.3, 6.2) random variables using a gamma G(4, 7) candidate.
listed are the ages in years of randomly selected race car drivers use a 0.05 significance level to test the claim that
assume a normal distribution. draw a well-labeled curve for each part.a. find the z-score that gives a left area
Environmentalists concerned about global warming can take a variety of approaches to produce evidence that temperatures are on the rise.
The standard deviation of all possible x values is called the?
Named let'' is a variant of let that has the form he and are just as in ordinary let, except that is bound within to a procedure whose body is and whose parameters are the variables in the. Thus, one can repeatedly execute the by invoking ..
Is there any evidence to suggest that the true mean Nordstrom gift-certificate purchased value is different from the true mean Macy's gift-certificate purchase.
Give and interpret the 95% confidence intervals for males and females on the HEIGHT variable. Which is wider and why? Give and interpret the 99% confidence intervals for males and females on the HEIGHT variable. Which is wider and why
Identify a business research topic and define the research questions for the identified problem or opportunity - What does the relevant literature in the field indicate about this problem?
Please share 3 real world examples of problems, which occurred due to the use of secondary data. Be specific about the consequences as well the secondary data used. You may use your own organization or research the net or literature for this one.
to decide whether two different types of steel have the same true average fracture toughness values n specimens of each
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