Question
A group of social scientists wanted to determine if police officers have a higher IQ than the general public. To test this theory, they took
A group of social scientists wanted to determine if police officers have a higher IQ than the general public. To test this theory, they took a sample of 140 police officers and administered an IQ test. The mean score for officers was 112 with a standard deviation of 10. A second sample of 150 citizens from the general population yielded a average IQ score of 105 with a standard deviation of 15. Utilize the t-statistic to test the following hypotheses:
Ha: Police Officers are significantly more intelligent than the general public
Ho: Police officers are not significantly more intelligent than the general public
What is the calculated value of t for this problem?
A. 1.49
B. 2.22
C. 4.68
D. 7.00
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Transportation A Global Supply Chain Perspective
Authors: John J. Coyle, Robert A. Novak, Brian Gibson, Edward J. Bard
8th edition
9781305445352, 1133592961, 130544535X, 978-1133592969
