A personnel manager has found that, historically, the scores on aptitude tests given to applicants for entry- level positions follow a normal distribution with standard deviation 23.29 points. A random sample of 11 test scores from the current group of applicants had a mean score of 72.14 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 58.7276 to 85.5524 points. Find the confidence level of this interval.
A personnel manager has found that, historically, the scores on aptitude tests given to applicants for entry- level positions follow a normal distribution with standard deviation 23.29 points. A random sample of 11 test scores from the current group of applicants had a mean score of 72.14 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 58.7276 to 85.5524 points. Find the confidence level of this interval.
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
Topic Video
Question
Transcribed Image Text:A personnel manager has found that, historically, the
scores on aptitude tests given to applicants for entry-
level positions follow a normal distribution with
standard deviation 23.29 points. A random sample of
11 test scores from the current group of applicants
had a mean score of 72.14 points. Based on these
sample results, a statistician found for the population
mean a confidence interval extending from 58.7276 to
85.5524 points. Find the confidence level of this
interval.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.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