Mathematics, 16.01.2020 02:31 andii1101
It has been observed that some persons who suffer colitis, again suffer colitis 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 118 people in the first group and this group will be administered the new drug. there are 127 people in the second group and this group wil be administered a placebo. after one year, 12% of the first group has a second episode and 13% of the second group has a second episode. select a 90% confidence interval for the difference in true proportion of the two groups. a) [-0.060, -0.043] b) [-0.080, 0.060] c) [-0.093, 0.073] d) [-0.580, 0.560] e) [-0.073, 0.093] f) none of the above
Answers: 2
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Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0
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Mathematics, 21.06.2019 22:00
White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.
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Mathematics, 21.06.2019 22:30
Which answer goes into the box? (90° clockwise rotation, 90° counter clockwise rotation, translation, or glide reflection)
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Mathematics, 22.06.2019 00:00
Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work
Answers: 1
It has been observed that some persons who suffer colitis, again suffer colitis within one year of t...
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