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 63 cities is 2.38 parts per million and the standard deviation is 2.11 parts per million. At alpha =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 H_0 and H_a Which of the following correctly states H_0 and H_a
H0 = ___
Ha =
(Type integers or decimals. Do not round.)
The claim is the ____ hypothesis