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explain the distinction between statistical significance and practical significance can the result of a study be
a hypothetical study of what people do in their spare time found that people born under the astrological sign of aries
students in a statistics class at penn state were asked about how many minutes do you typically exercise in a week
refer to given exercisea create a five-number summary for the mens responses show how you found your answerb use your
refer to given exercisea create a five-number summary for the womens responses show how you found your answerb use your
an article in the magazine science service 1994 discussed a study comparing the health of 6000 vegetarians and a
the risk of getting lung cancer at some point in ones life for men who have never smoked is about 13 in 1000 the risk
in recent years vietnamese american women have had the highest rate of cervical cancer in the country suppose that
did your mothers breakfast determine your sexread the original source on the companion website http
did anyone ask whom youve been datingaccording to a new usa todaygallup poll of teenagers across the country 57 of
safety in the skiesif you fly often you may have been relieved to see the new york times headline on october 1 2007
1 using the s-plus function bwrmcp verify that for the data in table 1 all pairwise comparisons among the levels of
1 using the s-plus function cmanova apply the choi-marden method to the data in given table 1 and verify that the
vitamin a is required for good health you conduct a study and find that as vitamin a intake decreases there is a linear
1 repeat the last exercise only now winsorize 20 by setting the argument win to 2 verify that the 95 confidence
1 an antipollution device for cars is claimed to have an average effectiveness of exactly 546 based on a test of 20
1 for n 25 alpha 01 sigma 5 and h0micro ge 60 verify that power is 95 when micro 562 for n 36 alpha 025 sigma 8
exercise 1 indicates that power is relatively low with only n 10 observations imagine that you want power to be at
for exercise 1 rather than increase the sample size what else might you do to increase power what is a negative
1 test the hypothesis h0micro xoline and s a xoline 44 s 10 b xoline 43 s 10 c xoline 43 s 22 repeat given exercise
a company claims that on average when exposed to their toothpaste 45 of all bacteria related to gingivitis are killed
1 a portion of a study by wechsler 1958 reports that for 100 males taking the wechsler adult intelligence scale wais
a standard measure of aggression in 7-year-old children has been found to have a 20 trimmed mean of 48 based on years
1 for the following pairs of points verify that the least squares regression line is y 18x - 85x589714y3167192 compute
verify that for the data in given exercise if you use yoline 2x - 9 the sum of the squared residuals is larger than