Stats Finals

________ is a procedure for making inferences

about a population.

• allows us to determine whether enough statistical evidence exists to conclude that a belief (to reject or not reject the null hypothesis). 

There are two ways to formula a hypothesis ________, _______

______________ form is literal or textual method of formulating hypothesis

_________ form is literal or textual method of formulating hypothesis

The ___________ Can be constructed as the “prevailing assumption”. It connotes that there is ____ significant difference in the quantitative characteristic. Is an assertion about a population

The ___________ Poses as the new assumption. It gives the idea that there is __ significant difference in the quantitative characteristic of the population. Assertion contrary to the null hypothesis

In a ____________ the Established alternative hypothesis is directional (<,>). Is used when one wants to know whether the sample data provide sufficient evidence to indicate one of the following :

1) the population parameter is greater than ; in this case the

Ho is ___; Ha is _____

2) the population parameter is less than

Ho is _____ ; Ha is ____

A _____________ is a Non – directional test. It is applied when we are interested to know whether the sample data provide sufficient evidence to indicate that the population parameter is not equal to some value. Established alternative hypothesis is non-directional

A Type I error occurs when the researcher _______ a null hypothesis when it is _____. The probability of committing a Type I error is called the ____________l. This probability is also called ______, and is often denoted by α. Also called ______

A Type II error occurs when the researcher___________ a null hypothesis that is _____. The probability of committing a Type II error is called ____, and is often denoted by β. Also called ________