A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.5 years, andstandard deviation of 1.5 years.If you randomly purchase 13 items, what is the probability that their mean life will be longer than 11 years?Enter an integer or decimal number [more..]Submit Questionrecret0a $$$hp

given data normal distribution μ=11.5σ=1.5n=13P(x¯>11)=?=P(x¯>11)=P((x¯-μσ/n>11-11.51.5/13)=P(z>-1.2019)=0.8853 [(∵from excel function =1-NORMSDIST(-1.2019)

Answered: A manufacturer knows that their items…

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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