Mathematics, 18.10.2019 21:30 girly37
One hundred volunteers who suffer from severe depression are available for a study. fifty are selected at random and are given a new drug that is thought to be particularly effective in treating severe depression. the other 50 are given an existing drug for treating severe depression. a psychiatrist evaluates the symptoms of all volunteers after 4 weeks in order to determine if there has been substantial improvement in the severity of the depression. in which situation would this study be double blind?
1. if neither the volunteers nor the psychiatrist knew which treatment any person had received
2. if all volunteers were not allowed to see the psychiatrist nor was the psychiatrist allowed to see the volunteers during the session when the psychiatrist evaluated the severity of the depression
3. all of the above
4. if neither drug had any identifying marks on it
Answers: 2
Mathematics, 21.06.2019 19:30
In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.
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Mathematics, 21.06.2019 22:30
The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?
Answers: 1
Mathematics, 21.06.2019 23:30
Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0
Answers: 2
One hundred volunteers who suffer from severe depression are available for a study. fifty are select...
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