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a research organization has collected the following data on household size and telephone ownership for 200 us
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interested in comparing the effectiveness of four different driving strategies a government agency has equipped a
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three different heat-treatment methods are being tested against four different zinc-coating techniques with data
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1 for what kinds of tests can chi-square analysis be used2 is the chi-square distribution a continuous distribution or
1 sketch the approximate shape of the chi-square curve when df 2 and when df 1002 why can the chi-square statistic
1 in carrying out a chi-square goodness-of-fit test what are the k and m terms in the df k - 1 - m expression and why
for the null hypothesis h0 the data were drawn from a uniform continuous distribution how many degrees of freedom would
sample data have been collected and the null hypothesis to be tested is h0 the sample was drawn from a normal
according to the bureau of the census 190 of the us population lives in the northeast 229 in the midwest 356 in the
from the one-day work absences during the past year the personnel director for a large firm has identified the day of
for the data provided in given exercise use the 005 level in testing whether the sample could have been drawn from a
each of 12 undergraduate students has been randomly assigned to one of the 6 cells shown here the purpose of the study
an experiment has been conducted to examine main and interactive effects of factor a keyboard configuration 3 levels
through separate calculations verify the confidence interval for each of the factor-level means shown in the output for
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the data in an experiment have been examined using anova and a confidence interval has been constructed for the mean