Question

Create a case (please refer to the sample) on the application of inferences about the difference...

Create a case (please refer to the sample) on the application of inferences about the difference between two population means (σ1 and σ2 known) and explain the hypothesis tests until conclusion.

EXAMPLE:

The mean instant messaging bill is P32.79 per household. A sample of 50 households showed a sample mean of P30.63. Use a population standard deviation of σ=5.60.

Formulate hypothesis for a test to determine whether the sample data support the conclusion that the mean monthly instant messaging bill is less than the national mean of P32.79.

What is the value of the test statistic?

What is the p-value?

At α=0.01, what is your conclusion?

Math   Statistics-And-Probability   
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