If I don’t know the variance of my population (i.e. unknown variance), there is no way to find a confidence interval on the mean unless I have at least 40 observations in my sample.

Under 1910.132(f), PPE training must be verified:

Which of the following represents the correct hierarchy of controls for hazard management?

PPE training must include which of the following?

According to 1910.132(d), the PPE hazard assessment must:

Respirators used voluntarily must still be evaluated for employee medical fitness.

The PPE hazard assessment must be certified in writing by the employer.

Employers are required to perform a written hazard assessment to determine the need for PPE.

Under 1910.132, employers must provide PPE at no cost to employees.

Under 1910.133(a)(1), employers must ensure that employees use appropriate eye or face protection when exposed to hazards such as: