Use the Normal model ​N(1163​,79​) for the weights of steers. ​a) What weight represents the 52nd​ percentile? ​b) What weight represents the 99th ​percentile? ​c) What's the IQR of the weights of these​ steers?

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A: We have given that  Sample size n =50 Favorable cases x=31 Sample proportion p^=x/n  =31/50 =0.62