question archive Use technology to solve the following problem: According to a recent study, the weight of male babies less than two months old in the United States is normally distributed with mean 11
Use technology to solve the following problem: According to a recent study, the weight of male babies less than two months old in the United States is normally distributed with mean 11
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Use technology to solve the following problem: According to a recent study, the weight of male babies less than two months old in the United States is normally distributed with mean 11.4 pounds and standard deviation 2.7 pounds. What proportion of babies weigh between 9.7 and 11.5 pounds?
Question 7 options:
0.2503
0.6667
0.7497
0.7792
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0.2503
We are given a Normal Distribution with µ=11.4 and a σ = 2.7. I am going to give two alternative uses of technology as not everybody has all the technology access:
Alternative 1 : TI-84 ==> normalcdf(9.7,11.5,11.4,2.7) = 0.2503 (accessible from undermenu of DIST)
Alternative 2 : Excel ==> "=NORMDIST(11.5,11.4,2.7,TRUE)-NORMDIST(9.7,11.4,2.7,TRUE)" = 0.2503 (Please note that NORMDIST is NORM.DIST in the newer versions of Excel)
