Determine the null hypothesis and the alternate hypothesis: ********************
ID: 2947300 • Letter: D
Question
Determine the null hypothesis and the alternate hypothesis:
*************************
An experimenter conducted a study of the relation of size in a particular species of bird to behavioral displays of dominance. The results for the first four birds observed were as follows.
Bird Size
Bird Behavior (Displays of Dominance)
14
74
18
82
14
74
10
70
Using ? = 0.05, is the relation of size to behavioral display statistically significant?
Choose the correct HOand HA statements:
A)
HO : r = 0
HA: r ? 0
B)
HO : linear relationship is not statistically significant (population correlation coefficient = 0)
HA: linear relationship is statistically significant (population correlation coefficient ? 0)
C)
HO : p1 = p2
HA: p1 ? p2
D)
HO : ?1 = ?2
HA : ?1 ? ?2
The most appropriate hypothesis test to use for this scenario is:
A)
t - test for significance of correlation coefficient r
B)
z – test for two population proportion
C)
t - test for independent means
D)
?2test for independence
E)
t - test for dependent means
Bird Size
Bird Behavior (Displays of Dominance)
14
74
18
82
14
74
10
70
Explanation / Answer
In given question, we need to determine relationship between size of bird and its dominance level. Hence, we will calculate coefficint of correlation
Hence option B
The test that we can use is
t - test for significance of correlation coefficient r
t - test for significance of correlation coefficient r
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