Sanjay made identical paper airplanes out of three different weights of paper, light, medium and heavy. He made four airplanes from each of the weights, and launched them himself across the room. Here are the distances (in meters) that his planes flew.
Paper Type/Trial | Trial 1 | Trial 2 | Trial 3 | Trial 4 |
Heavy | 5.1 meters | 3.1 meters | 4.7 meters | 5.3 meters |
Medium | 4 meters | 3.5 meters | 4.5 meters | 6.1 meters |
Light | 3.1 meters | 3.3 meters | 2.1 meters | 1.9 meters |
Table 13.28
Figure 13.8
a. Take a look at the data in the graph. Look at the spread of data for each group (light, medium, heavy). Does it seem reasonable to assume a
b. Why is this a balanced design?
c. Calculate the sample
d. Does the weight of the paper have an effect on how far the plane will travel? Use a 1% level of significance.
Complete the test using the method shown in the bean plant example in Example 13.4.
- variance of the group means __________
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Chapter 13 Solutions
Introductory Statistics
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Calculus Volume 1
Introductory Statistics
Elementary Statistics: Picturing the World (7th Edition)
Fundamentals of Statistics (5th Edition)
Essentials of Statistics (6th Edition)
Elementary Statistics (13th Edition)
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