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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.

I used TI-83 Calc. for these. Can someone check them? Thank you!

Q1=InvNorm(.35,16.36,14.65)=10.72
Q3=InvNorm(.65,16.36,14.65)=22.00

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