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A sample of 100 people is classified by gender (male/female) and by whether or not they are registered voters. The sample consists of 80 females and 20 males, and has a total of 60 registered voters. If these data were used for a chi-square test for independence, the expected frequencies should have a total of _____ males.
a.) 12b.) 20c.) 40d.) 48
Calculate, test, and interpret the relationship between two variables using the correlation coefficient.
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
Develop a stem-and-leaf chart. Summarize the number of times each ATM was used. What was the typical, minimum, and maximum number of times each ATM was used?
How many business students must be randomly selected to estimate the mean monthly earnings of business students at one college?
Population was computed to be 126.9 grams and the standard deviation was 1.20 grams. which food results in more uniform weight.
What is the probability that Sara will die in her 60 th year? Using this probability and the $50,000 death benefit, what is the expected loss to Big Rock Insurance?
question the president of a company that manufactures drywall wants to analyze the variables that affect demand for his
The upper limit of a 95% confidence interval for the population mean would equal:
A manufacturing process produces items whose weights are basically distributed. It is known that 22.57% of all the items produced, weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams.
Does this result support original claim, or is population percentage considerably less than 45%. Use alpha=.05 for level of significance.
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
Calculate the 90% confidence interval for the population mean of health men's pulse (sphygmus) in mountainous area.
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