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 63 cities is 2.39 parts per million and the standard deviation is 2.11 parts per million. At a= 0.05, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Identify the claim and state H, and Ha. Which of the following correctly states H, and H? Ho: Ha: (Type integers or decimals. Do not round.) The claim is the hypothesis.

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​(a) Identify the claim and state H0 and Ha. ​(b) Use technology to find the critical​ value(s) and identify the rejection​ region(s). ​(c) Find the standardized test​ statistic, t. ​(d) Decide whether to reject or fail to reject the null hypothesis. ​(e) Interpret the decision in the context of the original claim.
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 63 cities is 2.39 parts per million and the standard deviation is 2.11 parts per million. At a= 0.05, can the claim be supported?
Complete parts (a) through (e) below. Assume the population is normally distributed.
(a) Identify the claim and state H, and H. Which of the following correctly states H, and H,?
Ho:
Ha:
(Type integers or decimals. Do not round.)
The claim is the
V hypothesis.
Enter your answer in the edit fields and then click Check Answer.
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Transcribed Image Text: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 63 cities is 2.39 parts per million and the standard deviation is 2.11 parts per million. At a= 0.05, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Identify the claim and state H, and H. Which of the following correctly states H, and H,? Ho: Ha: (Type integers or decimals. Do not round.) The claim is the V hypothesis. Enter your answer in the edit fields and then click Check Answer. Check Answer Clear All 5 parts remaining
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