5 c. Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than 2.33 parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of 64 cities is 2.39 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. ​(a) Identify the claim and state H0 and Ha. What is: H0 and Ha​?   The claim is the hypothesis. ​(b) Use technology to find the critical​ value(s) and identify the rejection​ region(s).   The critical​ value(s) is/are t0= ​(Use a comma to separate answers as needed. Round to two decimal places as​ needed.)

Question
5 c. Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than
2.33
parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of
64
cities is
2.39
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.
​(a) Identify the claim and state
H0
and
Ha.
What is:
H0 and Ha​?
 
The claim is the
hypothesis.
​(b) Use technology to find the critical​ value(s) and identify the rejection​ region(s).
 
The critical​ value(s) is/are
t0=
​(Use a comma to separate answers as needed. Round to two decimal places as​ needed.)

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