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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
in given exercise what is the probability of getting a sample mean between 97500 and 102500exercise someone claims that
a company claims that the premiums paid by its clients for auto insurance have a normal distribution with mean micro
when sampling from a light-tailed skewed distribution where outliers are rare a small sample size is needed to get good
1 compute a 95 confidence for the trimmed mean if a n 24 sw2 12 xolinet 52 b n 36 sw2 30 xolinet 10 c n 12 sw2 9
1 compute a 95 confidence interval for the 20 trimmed mean using the data in given table2 compare the length of the
in a portion of a study of self-awareness dana observed the values59 106 174 207 219 237 313 365 458 497 515 529 557
1 the ideal estimator of location would have a smaller standard error than any other estimator we might use explain why
reported data on the number of seeds in 29 pumpkins the results were250 220 281 247 230 209 240 160 370 274 210 204 243
in given exercise the length of the confidence interval for micro is 2576 - 2007 569 and the length based on the
if the mean and trimmed mean are nearly identical it might be thought that it makes little difference which measure of
for the past 16 presidential elections in the united states the incumbent party won or lost the election depending on
an abc news program reported that a standard method for rendering patients unconscious led patients to wake up during
1 given that xoline 78 sigma2 25 n 10 and alpha 05 test h0micro gt 80 assuming observations are randomly sampled
for exercise 1 compute a 95 confidence interval and verify that this interval is consistent with your decision about
for given exercise determine the p-valueexercise given that xoline 78 sigma2 25 n 10 and alpha 05 test h0micro gt
an exploratory method for dealing with interactions is to assume the model y beta0 beta1x1 beta2x2 beta3x1x2 e is