Mathematics, 21.05.2020 04:59 randee56
To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligible for the program. The selected adults will be given a pretest before beginning the program and a posttest after completing the program. The difference in the number of correct answers on the pretest and the number of correct answers on the posttest will be recorded for each adult in the sample. Which of the following is the most appropriate inference procedure for the researchers to use to analyze the results?a) A one-sample z-interval for a population proportion. b) A one-sample t-interval for a sample mean difference. c) A matched-pairs t-interval for a population mean difference. d) A matched-pairs t-interval for a sample mean difference. e) A two-sample t-interval for a difference between means.
Answers: 3
Mathematics, 22.06.2019 00:30
Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.
Answers: 1
Mathematics, 22.06.2019 02:30
Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75
Answers: 1
Mathematics, 22.06.2019 04:30
You estimate that a baby bird weighs 2 pounds. the actual weight of the baby bird is 1.5 pounds. find the percent error. round your answer to the nearest hundredth of a percent.
Answers: 1
Mathematics, 22.06.2019 05:30
The probability brenda will recieve a telemarketing call is 15%. if she gets 20 calls a day, how many can she expect to be telemarketing calls?
Answers: 1
To study the effectiveness of a certain adult reading program, researchers will select a random samp...
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