Homework Help is Here – Start Your Trial Now!
Math
Statistics
i need it in word form or type the answer please so that i will just copy it

i need it in word form or type the answer please so that i will just copy it

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

i need it in word form or type the answer please so that i will just copy it

You are a recent graduate of Embry-Riddle Aeronautical University and have been hired by John Jolly to run and interpret a t-test. John is the owner of John's Jolly Small Aircraft Quick Oil Change. John is experimenting with a new oil change process and is trying to determine if the current process takes more time than the new process he is experimenting with. John is comparing sample mean times to evaluate his hypothesis about the population (total number of oil changes). Over the period of a week, he took a random sample of oil changes using both the old and new processes. Using the information John provided, you ran a t-test for independent samples. These are the results (a = .05). t-Test: Two-Sample Assuming Unequal Variance Current Process New Process Mean 30.15 14.20 Variance 234.8710526 14.16842105 Observations 20 20 Hypothesized Mean Difference df 21 t Stat 4.520032841 P(T<=t) one-tail 9.37197E-05 t Critical one-tail 1.720742903 P(T<=t) two-tail 0.000187439 t Critical two-tail 2.079613845 When you begin to share the information with John, he immediately says, "Oh my gosh, look at that p-value, it is 9! That is bad, right? What does that E- 05 mean at the end of the number?" You know John is not reading the p-value correctly (due to his misinterpretation of the E-05 at the end of the p-value number). How will you explain the results to John?
Transcribed Image Text:You are a recent graduate of Embry-Riddle Aeronautical University and have been hired by John Jolly to run and interpret a t-test. John is the owner of John's Jolly Small Aircraft Quick Oil Change. John is experimenting with a new oil change process and is trying to determine if the current process takes more time than the new process he is experimenting with. John is comparing sample mean times to evaluate his hypothesis about the population (total number of oil changes). Over the period of a week, he took a random sample of oil changes using both the old and new processes. Using the information John provided, you ran a t-test for independent samples. These are the results (a = .05). t-Test: Two-Sample Assuming Unequal Variance Current Process New Process Mean 30.15 14.20 Variance 234.8710526 14.16842105 Observations 20 20 Hypothesized Mean Difference df 21 t Stat 4.520032841 P(T<=t) one-tail 9.37197E-05 t Critical one-tail 1.720742903 P(T<=t) two-tail 0.000187439 t Critical two-tail 2.079613845 When you begin to share the information with John, he immediately says, "Oh my gosh, look at that p-value, it is 9! That is bad, right? What does that E- 05 mean at the end of the number?" You know John is not reading the p-value correctly (due to his misinterpretation of the E-05 at the end of the p-value number). How will you explain the results to John?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 12 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS