Suppose the Environmental Protection Agency is in the process of monitoring the water
Chapter 6, Problem 20(choose chapter or problem)
Suppose the Environmental Protection Agency is in the process of monitoring the water quality in a large estuary in the eastern United States, in order to measure the PCB concentration (in parts per billion).
a. Suppose that a random sample of size 80 has a sample mean of and a sample standard deviation of
. Test the hypothesis, at the
level, that the mean PCB concentration in the estuary is less than or equal to
against the alternative that it is higher. Is \(H_{0}\) rejected?
b. If the population mean is and the population standard deviation is
, what is the probability that the null hypothesis \(H_{0}: \mu \leq 1.50\) is rejected at the
level, if the sample size is
c. If the population mean is and the population standard deviation is
, what sample size is needed so that the probability is
that \(H_{0}: \mu \leq 1.50\) is rejected at the
level?
Equation Transcription:
Text Transcription:
H_0
H_0:mu{</=}1.50
H_0:mu{</=}1.50
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer