An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices for inflation. His results are given in the following table. Test the economist's claim at the 0.02 level of significance assuming that the population distribution of the paired differences is approximately normal. Let prices in 2018 be Population 1 and prices in 2019 be Population 2.
An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices for inflation. His results are given in the following table. Test the economist's claim at the 0.02 level of significance assuming that the population distribution of the paired differences is approximately normal. Let prices in 2018 be Population 1 and prices in 2019 be Population 2.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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Lesson 11.3 Hypothesis Testing: X
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An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between
these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices
for inflation. His results are given in the following table. Test the economist's claim at the 0.02 level of significance assuming that the population distribution of the
paired differences is approximately normal. Let prices in 2018 be Population 1 and prices in 2019 be Population 2.
Q Search
1640
^
2018
15.56
11.46
19.93
12.93
19.77
15.73
12.82
14.19
18.68
Average Residential Retail Prices of Electricity ($/kWh)
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7
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Sociology
1/18
Correct
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Dashboard
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2019
14.64
10.40
20.15
10.11
19.02
15.27
10.90
14.51
19.88
fo
➤11
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x | +
112
A Fo
+
LACIE RUSS
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Submit Answer
delete
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Transcribed Image Text:le
math
Grades for Lacie Russ: INTRO PRO X
C
https://learn.hawkeslearning.com/Portal/Lesson/lesson_certify
- Save & Exit Certify Lesson: 11.3 Hypothesis Testing: Two Pop...
Question 1 of 6. Step 2 of 3
54°F
Cloudy
#
4101
$
Lesson 11.3 Hypothesis Testing: X
15
%
An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between
these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices
for inflation. His results are given in the following table. Test the economist's claim at the 0.02 level of significance assuming that the population distribution of the
paired differences is approximately normal. Let prices in 2018 be Population 1 and prices in 2019 be Population 2.
Q Search
1640
^
2018
15.56
11.46
19.93
12.93
19.77
15.73
12.82
14.19
18.68
Average Residential Retail Prices of Electricity ($/kWh)
4
&
7
mail
fa
*
Sociology
1/18
Correct
O
ho
fg
144
Dashboard
(
a
2019
14.64
10.40
20.15
10.11
19.02
15.27
10.90
14.51
19.88
fo
➤11
)
O
fn
x | +
112
A Fo
+
LACIE RUSS
prt sc
r
Submit Answer
delete
backspar
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