a. In words, define the random variable X1 = b. Họ: and X2 = с. На
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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Question
Transcribed Image Text:2. Due to increasing fuel prices a taxi company tested a new technology that is said increase fuel
efficiency. They randomly chose 12 cars and measured how many kilometers travelled per liter
with and without the technology. The results were given below. Is there sufficient evidence that
the technology effectively increased fuel efficiency? Use a-0.1.
CAR
WITHOUT
WITH
TECHNOLOGY
TECHNOLOGY
15
18
2
16
16
3
17
18
4
17
19
17
17
6.
18
15
7
18
18
18
20
9
17
20
10
16
15
11
18
20
12
17
16
In words, define the random variable X1 =
b. Но:
Ha:
d. The level of significance is
e. Determine the test statistic using the data (show solution).
f. Provide the decision rule of the test.
g. Decision:
h. Write a clear conclusion using the format:
a.
and X2 =
с.
A
i. <There is / There is no> sufficient evidence to reject the null hypothesis that G
<insert null hypothesis in words> at <_% level of significance>.
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