2.1. In the first semester of the year 2003, the average return for a group of 251 investingcompanies was 4.5% and the standard deviation was 1.5%. If a sample of 40 companiesis randomly selected from this group, what is the approximate probability that the6.average return of the companies in this sample was between 4% and 5% in the firstsemester of the year 2003?08.6.Z =10n34011121314P( )15dec16173.4.7.

From the provided information, Mean (µ) = 4.5% Standard deviation (σ) = 1.5% Sample size (n) = 40…

Answered: 1. In the first semester of the year…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.CR: Chapter 13 Review

Problem 60CR

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