- 7 3 24 The Claim Is The Hyphothesis B Find The Critical Values And Choose The Graph That Shows The Rejection Area C 1 (109.25 KiB) Viewed 40 times
b. find the critical values and choose the graph that shows therejection area
c. find the test statitistic
d. decide rather to jecject or accept the nullhypothesis
e. there _____ enough evidence at ___% level of significance to___ the claim that the mean amount of lead in the air in US citiesis ____ _____ microgram per cubic meter.
Test a claim that the mean amount of lead in the air in U.S. cities is less than 0.037 microgram per cubic meter. It was found that the mean amount of lead in the air for the random sample of 57 U.S. cities is 0.039 microgram per cubic meter and the standard deviation is 0.069 microgram per cubic meter. At α=0.05, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed.