The sale price of a certain model of grand piano across the country is approximately normally distributed with a mean of $86,000 and a standard deviation of $4,400. a) What is the probability of a grand piano selling for more than $88,600 4.93 X b) Consider a set of 20 grand pianos. What is the probability that 5 or less of the pianos sell for more than $88,600? c) As these pianos sell across the country, what is the probability that the first piano that sells for more than $88,600 is the fourth piano?

The sale price of a certain model of grand piano across the country is approximately normally distributed with a mean of $86,000 and a standard deviation of $4,400. a) What is the probability of a grand piano selling for more than $88,600 4.93 X b) Consider a set of 20 grand pianos. What is the probability that 5 or less of the pianos sell for more than $88,600? c) As these pianos sell across the country, what is the probability that the first piano that sells for more than $88,600 is the fourth piano?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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