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Test the significance of a correlation coefficient.
Explain the coefficients used in regression analysis.
Use regression analysis to analyze a time series.
a researcher is interested in the relationship between the numbers of games won by football teams and the number of
the probability that a plant produces two or more seeds is .20. a sample of five plants is observed. what is the
suppose you know that the distribution of sample proportions of the residents of one town over 70 years old in samples
The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
suppose you have a list of salaries of all major league baseball players in 2013. does it make sense to find a 95
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience (to 2 decimals)?
assume that 2 out of every 1000 people have a particular disease. a test has been developed to detect this disease.
If the writing scores for the population have a standard deviation of σ = 20, does the sample provide enough evidence to conclude that the new composition course has a significant effect?
the weights of cats at a shelter are normally distributed with a mean of 11 lbs. and a standard deviation of 12. if 16
Does smiling cause mood to rise (i.e., become more positive)? Sketch between-participants, within-participants, and matched-participants designs that address this question and discuss the advantages and disadvantages of each to yielding data that ..
suppose that we want to estimate the proportion of recipes in the better homes and gardens new cook book that do not
How many dieters must be surveyed if we want to be 95% confident that the sample mean weight loss is within 0.25 pound of the true population mean? Assume that the population standard deviation is known to be 10.6 lb.
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