Independent t-test A researcher wants to know whether people who own dogs are less likely to visit their doctor. A sample of dog owners is compared to a similar group of people (matched for age and health) who are not dog owners. The researcher records the number of visits to the doctor during the past two years for each person. The data is analyzed using SPSS and the following output is obtained: Group Statistics Std. Deviation Std. Error Mean Dog_Ownership N. Mean doctor_visits no dog 8 7.8750 2.47487 .87500 dog owner 8 4.3750 2.38672 .84383 Independent Samples Test Levene's Test for toality of Variances Hest for tquaity of Means OSK Confdence iteral of the Difference S, 2- taled Mean Difference S. Erar Deerence Sig df Lower Upper 3.50000 Equal variances assumed 6.10720 doctor viits 000 1.000 2.879 14 012 121s00 920 012 Equal variances net assumed 2.879 13.92 3.50000 121560 6.10752
Independent t-test A researcher wants to know whether people who own dogs are less likely to visit their doctor. A sample of dog owners is compared to a similar group of people (matched for age and health) who are not dog owners. The researcher records the number of visits to the doctor during the past two years for each person. The data is analyzed using SPSS and the following output is obtained: Group Statistics Std. Deviation Std. Error Mean Dog_Ownership N. Mean doctor_visits no dog 8 7.8750 2.47487 .87500 dog owner 8 4.3750 2.38672 .84383 Independent Samples Test Levene's Test for toality of Variances Hest for tquaity of Means OSK Confdence iteral of the Difference S, 2- taled Mean Difference S. Erar Deerence Sig df Lower Upper 3.50000 Equal variances assumed 6.10720 doctor viits 000 1.000 2.879 14 012 121s00 920 012 Equal variances net assumed 2.879 13.92 3.50000 121560 6.10752
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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what do you conclude

Transcribed Image Text:Independent t-test
A researcher wants to know whether people
who own dogs are less likely to visit their
doctor. A sample of dog owners is compared to
a similar group of people (matched for
health) who are not dog owners. The researcher
records the number of visits to the doctor during
the past two years for each person. The data is
analyzed using SPSS and the following output
age
and
is obtained:
Group Statistics
Std.
Deviation
Std. Error
Mean
Dog_Ownership
N
Mean
doctor_visits no dog
8
7.8750
2.47487
.87500
dog owner
8 4.3750
2.38672
.84383
Independent Samples Test
Levene's Test for Equality of
Variances
-test for tquality of Means
95% Confidence Interval of
the Difference
Sig (2-
taled)
Sed. Era
Difference
Mean
Sig
df
Difference
Lower
Upper
doctor visits Equal variances
assumed
3.50000
000
1.000
2.879
14
012
121500
89280
6.10720
Equal variances net
assumed
2.879
13.982
012
3.50000
121560
89248
6.10752
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