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From their 50 data points (Washington DC not in the study), the researchers calculated a correlation of 0.988. Based on this study, can we say that individuals who spend a lot on groceries also spend a lot at restaurants? What possible lurking variable is there in this study?
The population of a state
Type of restaurant - fast food or more expensive
The amount of money spent on food varies from person to person
Smoking on campus. suppose 20% of the students on campus smoke. you select two students at random. In what percentage of samples will both students be smokers?
in an article shelf-space strategy in retailing published innbspproceedings southern marketing association the effect
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
the number of goals scored in a hockey match between the home team x and the visiting team y respectively follows each
A researcher conducts an independent measures research study and obtains t= 2.070 with df= 28. How many individuals participated in the entire research study?
In a multiple regression equation two independent variables are considered, and the sample size is 25. The regression coefficients and the standard errors are as follows.
What is the variance and standard deviation (of profit, NOT of tire life) for producing an all weather tire? Of producing a high performance tire?
NCAA Basketball Tournament. Each year, 64 college basketball teams compete in the NCAA tournament. Sandbox.com recently offered a prize of $10 million to anyone who could correctly pick the winner in each of the tournament games.
Using equation presented calculate SST,SSE and SSr. Determine least squares regression line for this data.
please answer both questions using a minimum of 100 words. use examples or references to support the solution. all
How large a sample should be taken if the desired margin of error E is:
Be sure to include all relevant information for each of the following problems, including hypotheses, critical value, degrees of freedom, and a statement about significance.
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