Mathematics, 03.12.2019 06:31, anhthule1011
Aphysical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. what sample size should be obtained if he wishes the estimate to be within two percentage points with 90% confidence, assuming that
(a) he uses the estimates of 21.6% male and 19.2% female from a previous year?
(b) he does not use any prior estimates?
Answers: 3
Mathematics, 21.06.2019 18:30, gracynamos
Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)
Answers: 1
Mathematics, 22.06.2019 00:30, lazybridplayer
Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations
Answers: 1
Mathematics, 22.06.2019 01:50, iiMxlissaii
Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm. it decreased by the same amount each year. what was the change in grandpa ernie's height each year
Answers: 2
Aphysical therapist wants to determine the difference in the proportion of men and women who partici...
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