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The figure for this exercise is a scatterplot of y = pulse rate after marching in place for 1 minute versus x = resting pulse rate measured before marching in place. (The data are in the pulse march dataset on the companion website.)
a. Does the plot show a positive association, a negative association, or no association between the two variables? Explain.
b. Explain whether you think the pattern of the plot is linear or curvilinear.
c. According to MayoClinic.com normal resting pulse rates for adults range from about 60 to 100, and for well-conditioned athletes they range from about 40 to 60. Using this information, explain whether there are any outliers in the scatterplot that are obvious mistakes. If there are outliers, describe where they are located on the plot.
Why might normality be an issue here? (c) What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence? (d) If this is not a reasonable requirement, suggest one that is.
find the equation of the asymptote
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The five-year disease-free survival rate for women receiving CEF alone as adjuvant therapy was estimated at about 60%, and it is hypothesized that the newly formed regimen would improve that rate from 60% to 70%. Find the total sample size needed ..
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normally distributed with a population mean of 2.5 and a population standard deviation of .5. Compute the following, showing all work: The percentage of students with GPA's above 3.0 is?
with loss function L(θ,a)= w(θ)(θ-a)^2, where w(θ) is a fixed weighted function. Determine the Bayes rule and comment on the role of w(θ) in this problem.
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