PRACTICE OF STATS - 1 TERM ACCESS CODE
PRACTICE OF STATS - 1 TERM ACCESS CODE
4th Edition
ISBN: 9781319403348
Author: BALDI
Publisher: Macmillan Higher Education
Question
Book Icon
Chapter 24, Problem 24.1AYK

a.

To determine

To outline the design of the experiment.

a.

Expert Solution
Check Mark

Explanation of Solution

Given:

The given values are-

  n=36P<0.001

Calculation:

Randomly select four groups of fruit flies, then gave each group a different dosage of caffeine (control, 1 mg/ml, 2.5 mg/ml, and 5 mg/ml), then measure the rest time of each fruit fly during a 12-hour dark period.

b.

To determine

To find out which means does this test compare, and also state the null and alternative hypothesis for the test in the setting.

b.

Expert Solution
Check Mark

Explanation of Solution

Given:

The following is the given graph-

  PRACTICE OF STATS - 1 TERM ACCESS CODE, Chapter 24, Problem 24.1AYK

Calculation:

The ANOVA F test compares the means of the four groups. Let be the mean rest time for the control group, be the mean rest time for group of a dosage of 1 mg/ml, be the mean rest time for group of a dosage of 2.5 mg/ml, and be the mean rest time for group of a dosage of 5 mg/ml. The hypotheses are:

H 0: μ1=μ2=μ3=μ4 .

H a: not all μ1,μ2,μ3 and μ4 are equal

The graph shows that as the dosage of caffeine increases, the rest time decreases. The P-value of the ANOVA F test of P < 0.0001 leads a rejection of the null hypothesis. So at least one of the average rest times of the four groups is different.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
0|0|0|0 - Consider the time series X₁ and Y₁ = (I – B)² (I – B³)Xt. What transformations were performed on Xt to obtain Yt? seasonal difference of order 2 simple difference of order 5 seasonal difference of order 1 seasonal difference of order 5 simple difference of order 2
Calculate the 90% confidence interval for the population mean difference using the data in the attached image. I need to see where I went wrong.
Microsoft Excel snapshot for random sampling: Also note the formula used for the last column 02 x✓ fx =INDEX(5852:58551, RANK(C2, $C$2:$C$51)) A B 1 No. States 2 1 ALABAMA Rand No. 0.925957526 3 2 ALASKA 0.372999976 4 3 ARIZONA 0.941323044 5 4 ARKANSAS 0.071266381 Random Sample CALIFORNIA NORTH CAROLINA ARKANSAS WASHINGTON G7 Microsoft Excel snapshot for systematic sampling: xfx INDEX(SD52:50551, F7) A B E F G 1 No. States Rand No. Random Sample population 50 2 1 ALABAMA 0.5296685 NEW HAMPSHIRE sample 10 3 2 ALASKA 0.4493186 OKLAHOMA k 5 4 3 ARIZONA 0.707914 KANSAS 5 4 ARKANSAS 0.4831379 NORTH DAKOTA 6 5 CALIFORNIA 0.7277162 INDIANA Random Sample Sample Name 7 6 COLORADO 0.5865002 MISSISSIPPI 8 7:ONNECTICU 0.7640596 ILLINOIS 9 8 DELAWARE 0.5783029 MISSOURI 525 10 15 INDIANA MARYLAND COLORADO
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Text book image
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Text book image
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
Text book image
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Text book image
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman