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