Mathematics, 05.08.2019 19:20 amelvin41
Pschological tests are often used to determine the hostility levels in people. high scores on the hlt pschological test corresponds to high hostility levels. suppose that 26 college students, all with equally high hlt test scores, were separated into two groups randomly. group 1 (10 students) was treated for high hostility levels by using method a; whereas group 2 (16 students) was treated for high hostility levels by using method b. both groups were treated for a period of 5 months, at which time all 26 students were again given the hlt test. below is the summary data on the hlt test for the two groups. group 1: sample mean is 79 and sample standard deviation is 7group 2: sample mean is 84 and sample standard deviation is 8compute a 95% confidence level for the difference in the means of the two treatment methods and select the best answer below. assume that the independent random samples were taken from normal distributions and that the two population variances are equal.
Answers: 3
Mathematics, 21.06.2019 14:30
The first five terms of a linear sequence are given below. 7 , 12 , 17, 22 , 27 , what is the next term of the sequence?
Answers: 1
Mathematics, 21.06.2019 16:50
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
Answers: 3
Mathematics, 21.06.2019 17:30
Which are factor pairs of 350? choose all answers that are correct. a) 30 and 12 b) 35 and 10 c) 70 and 5 d) 2 and 125
Answers: 2
Pschological tests are often used to determine the hostility levels in people. high scores on the hl...
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