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.
Temporary Employees. A temporary appointment is an appointment lasting one year or less, with a specific expiration date. It is appropriate when an agency expects there will be no permanent need for the employee.An agency may make a temporary appointment to:1  Fill short-term position that is not expected to last more than one year; or, 2  Meet an employment need that is scheduled to be terminated within one or more years for reasons as the completion of a specific project or peak workload; or,n agency may make a temporary appointment to: 1  Fill short-term position that is not expected to last more than one year; or, 2  Meet an employment need that is scheduled to be terminated within one or more years for reasons as the completion of a specific project or peak workload; or,