3) You measure the length of 5 radish seedlings at 7 days and 10 days and get the following results in mm (do NOT use R except for part (d)): seedling #: 1 3 4 5 S 5 days: 30 20 38 49 32 33.8 10.686 7 days: 35 27 46 58 34 40 12.145 difference: -5 -7 -8 -9 -2 -6.2 2.775 (a) Is there a difference in length? (Note: this should be one-sided. Why??) (b) Repeat (a), but now use a regular (unpaired) t-test. (c) What happened in (b)? (d) Verify the normal distribution assumption for the paired

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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3) You measure the length of 5 radish seedlings at 7 days and 10 days and get the following results in mm (do
NOT use R except for part (d)):
seedling #:
1
2
3
4
S
5 days:
30
20
38
49
32
33.8
10.686
7 days:
35
27
46
58
34
40
12.145
difference:
-5
-7
-8
-9
-2
-6.2
2.775
(a) Is there a difference in length?
(Note: this should be one-sided. Why??)
(b) Repeat (a), but now use a regular (unpaired) t-test.
(c) What happened in (b)?
(d) Verify the normal distribution assumption for the paired
t-test you did in (a).
(You may use R for this part).
Transcribed Image Text:3) You measure the length of 5 radish seedlings at 7 days and 10 days and get the following results in mm (do NOT use R except for part (d)): seedling #: 1 2 3 4 S 5 days: 30 20 38 49 32 33.8 10.686 7 days: 35 27 46 58 34 40 12.145 difference: -5 -7 -8 -9 -2 -6.2 2.775 (a) Is there a difference in length? (Note: this should be one-sided. Why??) (b) Repeat (a), but now use a regular (unpaired) t-test. (c) What happened in (b)? (d) Verify the normal distribution assumption for the paired t-test you did in (a). (You may use R for this part).
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