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Consider the following data points: (36, 88), (67.25, 224.7), (93, 365.3), (141.75, 687), and(483.8, 4332.1). (This was the data Kepler had when he was trying to find a relationship between the distance, in millions of miles, of a planet from the sun and the time, in days, it takes for that planet to goonce around the sun.) Rather than fit a line y = b + mx to these data points (xi, yi), fit a line to the points(log xi, log yi). Use your fitted line to guess a simple relationship between x and y. (In many applicationsto science and social science, data is transformed before regression is employed. The most commonly usedtransformations are power transformations and logarithmic transformations.)
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
What are the similarities between dividing two fractions and dividing two rational expressions?
Suppose the mean cannot be adjusted but the standard deviation can be reduced. What maximum value of the standard deviation would make 90% of the parts acceptable to the consumer? (Assume the mean to be 1.012)
imagine you are a manager at a major bottling company. customers have begun to complain that the bottles of the brand
the rayleigh probability density function is the special case of the weibull probability density function when u03b1
Show that if the roots of the polynomial p are all real, then the roots of p' are all real. If, in addition, the roots of p are all simple, then the roots of p' are all simple.
Assume that the dollar is presently weak and is expected to strengthen over time. How will these expectations affect the tendency of U.S. investors to invest in foreign securities?
The distribution of test scores in a large statistics class is approximately Normal with mean 75 points and standard deviation 7.5. What is the test scoare of a student who's standardized score is 0.4?
8. What will be the null hypothesis, the alternative hypothesis, and, hence, the "tailedness" of the test (left-tailed, right-tailed, or two-tailed)? 9. What is be the corresponding test statistics? 10. What is the corresponding p-value of the hypo..
a large firm has 85 of its service calls made by a contractor and 10 of these calls result in customer complaints. the
Using the sample information in the excel file, what is the 95% confidence interval estimate of the true proportion of households in the market area that subscribe to cable television?
A survey of licensed drivers inquired about running red lights. One question asked, "Of every ten motorists who run a red light, about how many do you think will be caught?"
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