Question

The income of a group of 1000 persons was found to be normally distributed with mean = Rs. 750 p.m. and standard deviation Rs. 50. Show that of this group about 95% has income exceeding Rs. 668 and only 51 had income exceeding Rs832. What was the lowest income among the richest 100?

Answer 1

Answer:

Don't know sorry...........

Answer 2

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