The P-value for testing if female workers average significantly less than 40 hours in a week is extremely small, close to zero.
a. Does this mean we have evidence that all female workers average much less than 40 hours a week, or does it mean we have strong evidence that all female workers average less than 40 hours a week?
b. Would 40 be contained in a 99% confidence interval for population mean hours worked by all female workers?