n-335 35 (153431.1 ont see 3. A crossover trial is planned to evaluate the impact of an educational intervention program to reduce alcohol consumption in patients determined to be at risk for alcohol problems. The pla is to measure alcohol consumption (the number of drinks on a typical drinking day) before the intervention and then again after participants complete the educational intervention program How many articipantswouldberequiredtoen urethata95%,confidencen terval for the mean- difference in the number of drinks is within 2 drinks of the true mean difference? Assume that the standard deviation of the difference in the mean number of drinks is 6.7 drinks. 乙 z- o P8. 172- 173 乙 43. Page 1 of1

Question

Please let me know if I calculated the number of participants required for the crossover trial study. It is #3 of my homework. Thank you.

n-335
35 (153431.1
ont see
3. A crossover trial is planned to evaluate the impact of an educational intervention program to
reduce alcohol consumption in patients determined to be at risk for alcohol problems. The pla
is to measure alcohol consumption (the number of drinks on a typical drinking day) before the
intervention and then again after participants complete the educational intervention program
How many articipantswouldberequiredtoen urethata95%,confidencen terval for the mean-
difference in the number of drinks is within 2 drinks of the true mean difference? Assume that
the standard deviation of the difference in the mean number of drinks is 6.7 drinks.
乙
z- o
P8. 172-
173
乙
43.
Page 1 of1
Expand
Transcribed Image Text

n-335 35 (153431.1 ont see 3. A crossover trial is planned to evaluate the impact of an educational intervention program to reduce alcohol consumption in patients determined to be at risk for alcohol problems. The pla is to measure alcohol consumption (the number of drinks on a typical drinking day) before the intervention and then again after participants complete the educational intervention program How many articipantswouldberequiredtoen urethata95%,confidencen terval for the mean- difference in the number of drinks is within 2 drinks of the true mean difference? Assume that the standard deviation of the difference in the mean number of drinks is 6.7 drinks. 乙 z- o P8. 172- 173 乙 43. Page 1 of1

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