Altruism in prairie dogs. Is altruistic behavior influenced by its potential cost? Prairie dogs are social rodents who wam each other of a predator's presence with barking calls. A researcher examined whether close proximity to a predator results in less frequent alam calls because the callers bear more personal risk. The "predator," a stuffed badger controlled remotely, was placed multiple times randomly either near or far from a prairie dog colony. The number of waming calls made by isolated foraging colony members is displayed in the following table: Distance to Predator Near Far 55 78 Alert Cal 29 No Call 80 a) Do the data support the researcher's hypothesis? Null Hypothesis Altemative Hypothesis b) Obtain the test statistic and the P-value. P-Value

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ISBN:9781119256830
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Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
ome
Insert
Draw
Page Layout
Formulas
Data
Review
View
O Tell me
Arial
10
• A AT
General
H
Conditional Formatting v
田、
Format as Table v
$ % 9 8 Cell Styles v
Paste
BIU
34
X v fx
B.
D.
E
F
Altrulsm in prairie dogs. Is altrulstic behavior influenced by its potential cost? Praire dogs are social rodents who wan each
other of a predator's presence with barking calls. A researcher examined whether close proximity to a predator results in less
frequent alam calls because the callers bear more personal risk. The "predator," a stuffed badger controlled remotely, was
placed multiple times randomly either near or far from a prairie dog colony. The number of waming cals made by isolated
foraging colony members is displayed in the following table:
Distance to Predator
Far
55
78
Near
Alert Call
No Call
29
80
a) Do the data support the researcher's hypothesis?
TO
11
Null Hypothesis
Alternative Hypothesis
12
13,
14
15
16
17
18
19
|20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
b) Obtain the test statistic and the P-value.
P-Value
c) Do the data support the researcher's hypothesis?
Explanation
Hint p-hat for combined numerator equals (29 + 80)
37
38
39
40
41
42
Transcribed Image Text:ome Insert Draw Page Layout Formulas Data Review View O Tell me Arial 10 • A AT General H Conditional Formatting v 田、 Format as Table v $ % 9 8 Cell Styles v Paste BIU 34 X v fx B. D. E F Altrulsm in prairie dogs. Is altrulstic behavior influenced by its potential cost? Praire dogs are social rodents who wan each other of a predator's presence with barking calls. A researcher examined whether close proximity to a predator results in less frequent alam calls because the callers bear more personal risk. The "predator," a stuffed badger controlled remotely, was placed multiple times randomly either near or far from a prairie dog colony. The number of waming cals made by isolated foraging colony members is displayed in the following table: Distance to Predator Far 55 78 Near Alert Call No Call 29 80 a) Do the data support the researcher's hypothesis? TO 11 Null Hypothesis Alternative Hypothesis 12 13, 14 15 16 17 18 19 |20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 b) Obtain the test statistic and the P-value. P-Value c) Do the data support the researcher's hypothesis? Explanation Hint p-hat for combined numerator equals (29 + 80) 37 38 39 40 41 42
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