Posted by **Katy** on Sunday, March 10, 2013 at 10:01pm.

1)A runner's finishing time translated into a z-score of z=2.6

Explain in words whether the runner performed excellently or poorly?

2)Yearly stock returns on India's Sensex Index are well described by a Normal model with a mean of 18.36% and a standard deviation of 14.65%. give the stock return cutoff for the middle 30% of all years.

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