Mathematics, 03.12.2019 01:31, bnvghnbbb
It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn within one year of the first episode. this is due, in part, to damage from the first episode. the performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. in order to do this two groups of people suffering a first episode are selected. there are 55 people in the first group and this group will be administered the new drug. there are 45 people in the second group and this group will be administered a placebo. after one year, 11% of the first group has a second episode and 9% of the second group has a second episode. conduct a hypothesis test to determine, at the significance level 0.1, whether there is reason to believe that the true percentage of those in the first group who suffer a second episode is different from the true percentage of those in the second group who suffer a second episode? select the [rejection region, decision to reject (rh0) or failure to reject (frh0)]
a. [ z < -1.65, rho]
b. [ z < -1.65 and z > 1.65, frho
c. [z > 1.65, frho]
d. [z < -1.65 and z > 1.65, frho]
e. [z > -1.65 and z < 1.65, rho]
f. none of the above
Answers: 1
Mathematics, 21.06.2019 15:20, angelbabynn05
Abcd β
klmn β
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wxyz given that information, which figures are reflections of abcd?
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Mathematics, 21.06.2019 16:40, shikiaanthony
You have 3 boxes, one "strawberries"; one "mentos" and one "mixed".but you know that all the labels are in incorrect order .how do you know witch is witch?
Answers: 1
Mathematics, 21.06.2019 20:30, afitzgerald
Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.
Answers: 3
It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn with...
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