Number of results: 7
Sunday, February 3, 2013 at 11:58am by Thomas
What statistical methods a researcher can use to determine if weights of the children in pounds are normally distributed or not?
Tuesday, December 4, 2012 at 1:33pm by Mary
If the average (xbar) on an assignment in a class was 82% with a standard deviation (s) of 4.8, what is the z-score for someone scoring 75% (round to the one hundredths place or two decimal places)?
Sunday, February 3, 2013 at 11:58am by brittany
What statistical method(s) a researcher can use to determine if the mean body mass index of the population is the same for three groups of subjects (group i=diet restriction; group 2=exercise; group 3=none).
Tuesday, December 4, 2012 at 1:36pm by Mary
Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Sunday, February 3, 2013 at 11:58am by PsyDAG
An observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r = 0.35. The study involves n=125 participants and the mean (std dev) age is 44.3 (10.0) years with an age range of 35 to 55 years, and ...
Friday, July 5, 2013 at 2:16pm by Simone
I am having problems in this course with following the professor. Can anyone help me with this problem Thanks need to calculate 99% CI for true mean with the following data: n=100, mean is 126 with sample variance of 402. I have to know the answer, theorems and interpret tne ...
Thursday, June 7, 2007 at 9:51pm by Grace