Click the icon to view the table of chest deceleration measurements
Click the icon to view the table of analysis of variance results.
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a. What characteristic of the data specifically indicates that one-way analysis of variance should be used?
A. There are three samples of measurements.
B. The population means are approximately normal.
C. The measurements are categorized according to the one characteristic of size.
D. Nothing specifically indicates that one-way analysis of variance should be used.
b. If the objective is to test the claim that the three size categories have the same mean chest deceleration, why is the method r
A. The method is based on estimates of a common population variance.
B. The method is based on estimates of multiple varying population variances.
C. The method is based on showing that the population variances are similar.
D. The method is based on showing that the population variances are different.
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The accompanying data table contains chest deceleration measurements (in g, where g is the force of gravity) from samples of small, midsize, and large cars. Shown are the technology results for analysis of variance of this data table. Assume that a researcher plans to use a 0.05 significance level to test the claim that the different size categories have the same mean chest deceleration in the standard crash test. Complete parts (a) and (b) below
Click the icon to view the table of chest deceleration measurements Click the icon to view the table of analysis of variance results.
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Chest Deceleration Measurements (g) from a Standard Crash Test Small 44 39 37 54 39 44 42 Midsize 36 53 43 42 52 49 41 Large 32 45 41 38 37 38 33
a. What characteristic of the data specifically indicates that one-way analysis of variance should be used?
O A. There are three samples of measurements.
B. The population means are approximately normal.
O D. Nothing specifically indicates that one-way analysis of variance should be used.
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b. If the objective is to test the claim that the three size categories have the same mean chest deceleration, why is the method r
O A. The method is based on estimates of a common population variance
X
O B. The method is based on estimates of multiple varying population variances. O C. The method is based on showing that the population variances are similar.
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O D. The method is based on showing that the population variances are different.
SPSS Sum of Results Squares Between 200.857 Groups Within 549.714 Groups Total 750.571
dp
Mean Square 100.429
F
Sig. 0.061
2
3.288
18
30.540
20
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Done