MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Three different checkpoints in a water distribution system are tested for bacterial
contamination. Several randomly selected water samples from each location are used
to produce bacterial contamination scores on a scale from 1 and 20. Is the level of
contamination the same everywhere?
Location 1
Location 2
Location 3
13
14
11
5
15
6
11
9
8
Sum 48
32
30
The null hypothesis is that the bacterial contamination is the same at all three
locations. Your research hypothesis is that at least one location has a different mean
contamination score.
You calculate that Ex = 110 and Ex? = 1200. Perform the rest of the ANOVA
calculations to determine the Within Groups degrees of freedom.
8
6
3
7
2.
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Transcribed Image Text:Three different checkpoints in a water distribution system are tested for bacterial contamination. Several randomly selected water samples from each location are used to produce bacterial contamination scores on a scale from 1 and 20. Is the level of contamination the same everywhere? Location 1 Location 2 Location 3 13 14 11 5 15 6 11 9 8 Sum 48 32 30 The null hypothesis is that the bacterial contamination is the same at all three locations. Your research hypothesis is that at least one location has a different mean contamination score. You calculate that Ex = 110 and Ex? = 1200. Perform the rest of the ANOVA calculations to determine the Within Groups degrees of freedom. 8 6 3 7 2.
It is claimed that the mean household size in the River Terrace neighbourhood is 3.5
persons. A random sample of 25 households is taken.
What statistical method will you use to determine if this statement is correct?
Student's t-test
z-test
Chi-Square Test
O Fisher's Exact Test
Leader's 25 Ib test
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Transcribed Image Text:It is claimed that the mean household size in the River Terrace neighbourhood is 3.5 persons. A random sample of 25 households is taken. What statistical method will you use to determine if this statement is correct? Student's t-test z-test Chi-Square Test O Fisher's Exact Test Leader's 25 Ib test
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