Mathematics, 12.03.2020 04:16 cowikta
A researcher wants to study the effects of caffeine on student performance on quiz scores. The research gives a caffeinated drink to half the students and a non-caffeinated drink to the other half of students. The researcher then measures quiz scores by counting the number of correct answers. Given the above scenario, what is the dependent variable?
Answers: 3
Mathematics, 21.06.2019 17:30
8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals
Answers: 1
Mathematics, 21.06.2019 18:50
The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9
Answers: 1
Mathematics, 21.06.2019 19:30
Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?
Answers: 3
Mathematics, 21.06.2019 22:30
Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?
Answers: 3
A researcher wants to study the effects of caffeine on student performance on quiz scores. The resea...
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