(a) For mice in this sample on a standard light/dark cycle, what is the average percent of food con- sumed during the day? What percent is con- sumed at night? What about mice that had dim light at night? (b) Is there evidence that light at night influences when food is consumed by mice? Justify your answer with a p-value. Can we conclude that there is a cause-and-effect relationship?
(a) For mice in this sample on a standard light/dark cycle, what is the average percent of food con- sumed during the day? What percent is con- sumed at night? What about mice that had dim light at night? (b) Is there evidence that light at night influences when food is consumed by mice? Justify your answer with a p-value. Can we conclude that there is a cause-and-effect relationship?
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
Related questions
Question
Transcribed Image Text:8.35 When Calories Are Consumed Researchers
hypothesized that the increased weight gain seen in
mice with light at night might be caused by when
the mice are eating. (As we have seen in the previ-
ous exercises, it is not caused by changes in amount
of food consumed or activity level.) Perhaps mice
with light at night eat a greater percentage of their
food during the day, when they normally should be
sleeping. Conditions for ANOVA are met and com-
puter output for the percentage of food consumed
during the day for each of the three light conditions
is shown.
Level
e
DM
LD
LL
N
10
Light
Error
Total
8
9
Mean
55.516
36.028
76.573
One-way ANOVA: DayPct versus Light
Source
DF
MS
2
24
26
St Dev
10.881
8.403
9.646
SS
6987.0
2304.3
9291.2
3493.5
96.0
F
36.39
P
0.000
(a) For mice in this sample on a standard light/dark
cycle, what is the average percent of food con-
sumed during the day? What percent is con-
sumed at night? What about mice that had dim
light at night?
(b) Is there evidence that light at night influences
when food is consumed by mice? Justify your
answer with a p-value. Can we conclude that
there is a cause-and-effect relationship?
8:36 Glucose Tolerance We have seen that light at
Descripti
Variable
GTT-120
(a) Wh
izat
dat
(b) De
GT
(c) Us
obt
anc
Cle
sign
aff
8.37 T
sure E
sample
of the
numbe
and Sc
to scho
The da
(a) Us
for
the
WH
(b) Us
WE
(c) WH
8.38 T
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