13. Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than 2.31 parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of 65 cities is 2.37 parts per million and the standard deviation is 2.12 parts per million. At α=0.10, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. Question content area bottom Part 1 (a) Identify the claim and state H0 and Ha. Which of the following correctly states H0 and Ha? H0: muμ greater than or equals≥ 2.31 2.31 Ha: muμ less than< 2.31 2.31 (Type integers or decimals. Do not round.) The claim is the alternative hypothesis. Part 2 (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are t0=negative 1.30 −1.30. (Use a comma to separate answers as needed. Round to two decimal places as needed.) Part 3 Choose the graph which
13. Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than 2.31 parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of 65 cities is 2.37 parts per million and the standard deviation is 2.12 parts per million. At α=0.10, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. Question content area bottom Part 1 (a) Identify the claim and state H0 and Ha. Which of the following correctly states H0 and Ha? H0: muμ greater than or equals≥ 2.31 2.31 Ha: muμ less than< 2.31 2.31 (Type integers or decimals. Do not round.) The claim is the alternative hypothesis. Part 2 (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are t0=negative 1.30 −1.30. (Use a comma to separate answers as needed. Round to two decimal places as needed.) Part 3 Choose the graph which
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
13.
Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than
2.31
parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of
65
cities is
2.37
parts per million and the standard deviation is
2.12
parts per million. At
α=0.10,
can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed.Question content area bottom
Part 1
(a) Identify the claim and state
H0
and
Ha.
Which of the following correctly states
H0
and
Ha?
H0:
|
muμ
greater than or equals≥
|
Ha:
|
muμ
less than<
|
(Type integers or decimals. Do not round.)
The claim is the
hypothesis.
alternative
Part 2
(b) Use technology to find the critical value(s) and identify the rejection region(s).
The critical value(s) is/are
t0=negative 1.30
−1.30.
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
Part 3
Choose the graph which shows the rejection region.
−t0
t0
t<−t0, t>t0
t0
t>t0
−t0
t0
−t0<t<t0
t0
t<t0
Part 4
(c) Find the standardized test statistic, t.
The standardized test statistic is
t=0.23
0.23.
(Round to two decimal places as needed.)
Part 5
(d) Decide whether to reject or fail to reject the null hypothesis.
Fail to reject
H0
because the standardized test statistic
is not
Part 6
(e) Interpret the decision in the context of the original claim.
There
enough evidence at the
the claim that the mean amount of carbon monoxide in the air in U.S. cities is
▼
is not
is
enter your response here
%
level of significance to
▼
rejectreject
supportsupport
▼
equal
less than
greater than or equal
greater than
not equal
less than or equal
enter your response here
parts per million.(Type integers or decimals. Do not round.)
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