A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 5% significance level.
x? = 33, n = 30, ? = 9, H?: ? = 38, H?: ? < 38
The test statistic is z = - 3.04 .
(Round to two decimal places as needed.)
The P-value is [ ].
(Round to three decimal places as needed.)