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internet use the world bank collects data on many variables related to development for countries throughout the
internet use in europe refer to the previous exercise now examine the data only for the countries in europe answer the
park space and population below are data on park and open space in several us cities with high population
public health and nutrition meat or poultry classified as lean has less than four grams of saturated fat suppose the
compare two normal curves in exercise 386 we worked with the distribution of istep scores on the englishlanguage arts
leisure time for college students you want to measure the amount of leisure time that college students enjoy write a
biological clocks many plants and animals have biological clocks that coordinate activities with the time of day when
question ruffles students investigating the packaging of potato chips purchased 6 bags of lay s ruffles marked with a
product preference product preference depends in part on the age income and gender of the consumer a market researcher
internet service toptenreviews publishes product reviews of consumer products in many different categories40 here are
weights are not normal the heights of people of the same sex and similar ages follow normal distributions reasonably
what graph would you use what type of graph or graphs would you plan to make in a study of each of the following
spam filters a university department installed a spam filter on its computer system during a 21-day period 6693
two distributions if two distributions have exactly the same mean and standard deviation must their histograms have the
norms for reading scores raw scores on behavioral tests are often transformed for easier comparison a test of reading
relationship between first test and final exam you want to study the relationship between the score on the first exam
create a categorical variable from a quantitative variable consider the study described in example 43 some analyses
replace names by ounces in the mocha frappuccino example the variable size is categorical with tall grande and venti as
sleep and stress or stress and sleep consider the scenario described in example 43 make an argument for treating the
make a data seta create a spreadsheet that contains the spam botnet datab how many cases are in your data setc describe
use your data set using the data set that you created in the previous exercise find graphical and numerical summaries
make a scatterplota make a scatterplot similar to figure 41 for the spam botnet datab mark the location of the botnet
change the unitsa create a spreadsheet with the spam botnet data using the actual values in other words for srizbi use
make a scatterplot in our mocha frappuccino example the 12-ounce drink costs 350 the 16-ounce drink costs 400 and the
are the debts in 2006 and 2007 approximately the same use the methods you learned in chapter 3 to examine whether or