Mathematics, 31.10.2021 04:40 Lindsay882
A sample of n = 9 participants is obtained from a population with u = 29, and a treatment is administered to the individuals in the sample. After treatment, the scores for the nine
participants are as follows: 23,33, 26, 28, 30, 26, 27, 25, 25.
a. Are the data sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with a = .05.
b. Are the data sufficient to conclude that the treatment significantly decreased scores? Use a one-tailed test with a =.05.
Answers: 2
Mathematics, 21.06.2019 17:20
Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?
Answers: 2
Mathematics, 21.06.2019 19:30
Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%
Answers: 2
Mathematics, 21.06.2019 22:30
5. (04.07)which of the following exponential functions goes through the points (1, 12) and (2, 36)? (2 points)f(x) = 3(4)^xf(x) = 4(3)^-xf(x) = 3(4)^-xf(x) = 4(3)^x
Answers: 1
Mathematics, 22.06.2019 00:00
(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.
Answers: 1
A sample of n = 9 participants is obtained from a population with u = 29, and a treatment is adminis...
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