The evidence is collected in the form of a sample, and the statistician must then decide. There are two possible errors. The statistician could mistakenly reject a true null hypothesis (called a Type I error), or mistakenly accept a false null hypothesis (called a Type II error).The benefit of the doubt goes to the null hypothesis, which is assumed to be true until the evidence seems to indicate otherwise.he level of significance $\alpha$ is the probability of a Type I error. That is, $\alpha$ is the probability of rejecting a true null hypothesis. In our example above, that probability was 5%.
Job applicants converse outside the Staffmark temp agency in Cypress, Calif. Temporary employment agencies -- popularly known as temp agencies -- provide workers to a variety of businesses via short-term contracts or indefinite temporary positions.
(MoneyWatch) If you need a job right now, temporary work is often a good route. Companies often are willing to hire you as a temp when they wouldn't hire you in a regular position. But, it's not all a bed of roses. Temporary employees don't have any sense of job security.(Although employer can, generally, fire anyone, they usually do not.ompanies often are willing to hire you as a temp when they wouldn't hire you in a regular position. But, it's not all a bed of roses. Temporary employees don't have any sense of job security. (Although employer can, generally, fire anyone, they usually do not.