Number of results: 5

**Biostats**

What statistical methods a researcher can use to determine if weights of the children in pounds are normally distributed or not?

*December 4, 2012 by Mary*

**Biostats**

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)?

*February 3, 2013 by brittany*

**Biostats**

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).

*December 4, 2012 by Mary*

**BioStats**

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 ...

*July 5, 2013 by Simone*

**Biostats**

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 ...

*June 7, 2007 by Grace*

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