Mathematics, 29.06.2019 06:10 Haileydusenbery
Students in a large statistics class were randomly divided into two groups. the first group took the midterm exam with soft music playing in the background, and the second group took the exam with no music playing. after the exam was completed, a researcher compared deidentified exam scores of the two groups. which of the following is the reason this experiment was not blind? a. the sample sizes in both groups was large. b. the students knew whether or not music was playing while they were taking the exam. c. students were randomized into the two groups. d. some of the students may not have studied for the exam. e. researchers looked at exam scores for the two groups.
Answers: 1
Mathematics, 21.06.2019 13:30
Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.
Answers: 2
Mathematics, 21.06.2019 18:00
George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain
Answers: 1
Mathematics, 21.06.2019 21:00
Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5
Answers: 1
Mathematics, 21.06.2019 23:00
According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)
Answers: 1
Students in a large statistics class were randomly divided into two groups. the first group took the...
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