Mathematics, 23.10.2019 19:00, EnternalClipz
Some contact lens wearers report problems with dryness in their eyes. a study was conducted to evaluate the effectiveness of a new eye-drop solution to relieve dryness for contact lens wearers. twenty-five volunteers who wore contact lenses agreed to use the new solution for one month. at the end of the month, 36 percent of the volunteers reported that the new solution was effective in relieving dryness. the company that produced the new eye-drop solution concluded that using the new solution is more effective in relieving dryness than using no solution. which of the following best explains why the study does not support such a conclusion? (a) the sample size was too small. (b) the study had no control group. (c) the participants were volunteers. (d) the participants self-reported the frequency with which they used the new solution. (e) the participants self-reported the effectiveness of the new solution.
Answers: 2
Mathematics, 21.06.2019 20:00, karamalqussiri478
The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?
Answers: 1
Mathematics, 21.06.2019 22:00, jasmineanitak16
Using inductive reasoning, what is the next two numbers in this set? 1,-7,13,-19 i got the numbers 14,-26 is that right?
Answers: 2
Mathematics, 21.06.2019 22:30, garcser257278
If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|
Answers: 1
Some contact lens wearers report problems with dryness in their eyes. a study was conducted to evalu...
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