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Question: Attend church, live longer? One of the better studies of the effect of regular attendance at religious services gathered data from a random sample of 3617 adults. The researchers then measured lots of variables, not just the explanatory variable (religious activities) and the response variable (length of life). A news article said: "Churchgoers were more likely to be nonsmokers, physically active, and at their right weight. But even after health behaviors were taken into account, those not attending religious services regularly still were about 25% more likely to have died."57 What conclusion can we draw from this study? Explain.
the average hourly wage of workers at a fast food restaurant is 6.50hr with a standard deviation of 0.45. assume that
Write a paper of no more than 1250 words in which you conduct a comparative and ratio analysis to measure profitability and liquidity.
an experiment involves selecting a random sample of 283 middle managers study. one item of interest is their mean
heights of trees in a forest are normally distributed. the mean and standard deviation of a random sample of size 20
In the study, 30 students responded high interest, 40 students responded medium interest, and 30 students responded low interest. What is the relative frequency of students with high interest?
Construct a line graph that shows both net sales and expenditures for advertising/product promotion over time. Some would suggest that increases in advertising should be accompanied by increases in sales. Do your line graphs seem to support this?
Can we use a linear model to predict the number of calories from the amount of fat? If so, how accurate will our predictions be? Follow the four-step process.
The American League and the National League of Major League Baseball are each divided into three divisions: East, Central, and West. Many years, fans talk.
Find the probabilities for the following discrete random variables and find the probability that the salad contains more than 5 vegetables on i) a given day and on ii)3 of the next 4 days?
Identify the basic elements of a real-estate investor's decision situation. What are the investor's objectives? Is the situation dynamic (that is, are there sequential decisions)? What are some of the uncertainties that the investor faces? What ar..
one of the requirements of linear regression is homoscedasticity of the residuals. this means that .a. the sizes of the
A spinner has the numbers 1 thru 9. The spinner is spun once. What is the probability of P (3, 6 or 8)? Write the answer as a percent.
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