TIME REMAINING 45:07
C D
Sisters Sharon and Karen enjoy sleeping. Let X represent the number of hours Sharon sleeps each night, and let y
represent the number of hours Karen sleeps each night. The mean of X is 7.9, and the mean of Y is 8.4 Which
answer choice correctly calculates and interprets the mean of the sum, S=X+Y?
Os=0.5; the mean amount of sleep Sharon and Karen get is 0.5 hours nightly
OWS 8.15 the mean amount of sleep Sharon and Karen get is 8.15 hours nightly
=8.15: Sharon and Karen can expect to sleep a total of 8.15 hours, on average, nightly
O Ws = 16.3, Sharon and Karen can expect to sleep a total of 16.3 hours, on average, nightly
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