1. Mean = Sample mean
Variability for distribution of means = SEm = SD/√n
2. Z = (score-mean)/SEm
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.
The percent of fat calories that a person that in America consumes each day is normallydistributed with a mean of 36 and a standard deviation of 10. Suppose that 16 individuals are randomly chosen for an experiment.
1. Completely describe the distribution of sample means for the group of 16 individuals that was chosen in the experiment above. (please show work so I know how to do it myself!)
2. For the group of 16, find the probability that the average percent of fat calories consumed is more than 30 calories.
Thank you!
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1 answer