anonymous
  • anonymous
X has a normal distribution, and P(X>73.05)=0.0289. Given that the variance of the distribution is 18, find the mean.
Mathematics
schrodinger
  • schrodinger
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dumbcow
  • dumbcow
same equations Z = (73.05 - mean)/sqrt18 when you look up the probability, you need to do 1-.0289, because of how they set up the probability tables
amistre64
  • amistre64
on some tables it measures from themean itself ..... so .5 - .0289 might be it as well

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