91影视

Here the null and alternative hypotheses are defined as follows:

H.: The mean annual salary of public in class room teachers is equal to the national salary of teachers $49.0.

$H_0:渭=\$49$

H.: The mean annual salary of public class room teachers in is greater than the national salary of $49.0.

Versus,

$H_a:渭=\$49$

According to the definition of the type I error; rejecting a null hypothesis, when it is true. A type one error would occur in fact $渭=\$49.0$is true, that is the mean annual salary of public class room teachers in National survey of teachers in public schools is $49.0, but the results of the sampling lead to conclude that mean salary of school teachers is equal to $49.0, hence the rejection of true null hypothesis.

According to the definition of the type II error; not rejecting a null hypothesis, when it (H鈧�) is false. Here, a type II error would occur if in fact$渭=\$49.0$ is not to be rejected, but the results of 醽� the sampling fail to conclude that mean annual salary of public class room teachers in National

survey of teachers in public schools is $49.0.

A correct decision would occur if true null hypothesis is not rejected or a false null hypothesis is rejected. Here, in fact the mean annual salary of public class room teachers in National survey of teachers in public schools is $49.0, and the results of the sampling do not lead to the rejection, so which is a correct decision; or mean annual salary of public class room teachers in National survey of teachers in public schools differs from $49.0, and the results of the sampling lead to the rejection of the null hypothesis of $49.0.

Here the mean annual salary of public class room teachers in is $49.0, and the results of a hypothesis test lead to non rejection of the null hypothesis. We need to classify the decision as an error type or a correct decision.

As a sampling result we obtain the mean annual salary of public class room teachers in Hawaii in public schools is $49.0, and we are not rejecting the null hypothesis that the mean annual salary of public class room teachers in National survey of teachers in public schools is $49.0, that is the true null hypothesis is not rejected, So we are taking correct decision.

Here the mean annual salary of public class room teachers in exceeds $49.0, and the results of a hypothesis test lead to non rejection of the null hypothesis. We need to classify the decision as an error type or a correct decision.

We are not rejecting the null hypothesis of $渭=\$49.0,$where we obtain as a sampling result that mean annual salary of public class room teachers in exceeds from $49.0. Therefore, we are committing type II error.