To compare the effects of two sleep-inducing drugs, ten subjects received either drug A or drug B on different nights. The additional hours of sleep (when compared to the test subject's customary number of hours of sleep) were recorded for the two drugs:
a. Find the S-estimate of the median difference in the number of additional hours of sleep.
b. Find the W -estimate of the median difference in the number of additional hours of sleep.
c. Find the S-interval with confidence coefficient .90 for the median difference in the number of additional hours of sleep.
d. Find the W-interval with confidence coefficient .90 for the median difference in the number of additional hours of sleep.
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