Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000and a standard deviation of $3,000 a) What percentage of the employees will have incomes greater than $20,000 ? b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 ?
Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000and a standard deviation of $3,000 a) What percentage of the employees will have incomes greater than $20,000 ? b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 ?
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...
Related questions
Question
100%
Solve step by step in digital format
Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000and a standard deviation of $3,000
a) What percentage of the employees will have incomes greater than $20,000 ?
b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 ?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images
Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON