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September 20, 2014

September 20, 2014

Posted by **Alex** on Sunday, June 20, 2010 at 11:13am.

- Statistics -
**PsyDAG**, Sunday, June 20, 2010 at 12:30pmZ = (score - mean)/SD

Z = (37-74)/29 = -1.28

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion for that Z score.

- Statistics -
**jenny**, Sunday, September 19, 2010 at 3:19pmDont know

- Statistics -
**amy**, Sunday, April 29, 2012 at 6:25pmA person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. Suppose that after a 12-hour fast, the random variable x will have a distribution that is approximately normal with mean μ = 89 and standard deviation σ = 26. Note: After 50 years of age, both the mean and standard deviation tend to increase. For an adult (under 50) after a 12-hour fast, find the following probabilities. (Round your answers to four decimal places.)

(a) x is more than 60

(b) x is less than 110

(c) x is between 60 and 110

(d) x is greater than 140 (borderline diabetes starts at 140)

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