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International mutual funds reported weak returns in 2008. The population of international mutual funds earned in...

International mutual funds reported weak returns in 2008. The population of international mutual funds earned in 2008 was normally distributed with a mean of 10 and a standard deviation of 20. If you selected a random sample of 10 funds from this population, what is the probability that the sample would have a mean return (Please show all work)

  1. less than -10
  2. between 0 and -10
  3. greater than -30
math   Statistics-And-Probability   
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Answer #1


in20og 3ampe mson 려 听 6.326 6.32ub 一3:16 C b) 0-066 2 - -6.3246 319 -61 612 6 32ut -30-10

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