The mean life of a certain metal saw blade is 30.20 hours, with a standard deviation of 4.70 hours. Assuming that the distribution is normal,What is the probability that a simple random sample of 30 metal saw blades has a mean of less than 28.10 hours?SD of the sample mean (input 4 decimal places)= type your answer...Probability (input 2 decimal places) = type your answer...%z-score (input 2 decimal places) = type your answer...Final answer/

Answer:- Given, Mean, µ = 30.20 hours. Standard deviation, σ = 4.70 Sample size, n = 30 Let, X be…

Answered: The mean life of a certain metal saw…

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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