Question

Asked Oct 13, 2019

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Step 1

The appropriate Null and Alternative Hypotheses are given below:

From the given information, the claim of the problem is testing whether illegal drug in the school is below the current national average or not.

** **

**Null hypothesis:**

* *

*H*_{0}: *p* = 0.098.

That is, the illegal drug in the school is equal to the current national average, 9.8%.

**Alternative hypothesis:**

* *

*H*_{a}: *p *< 0.098.

That is, the illegal drug in the school is below the current national average, 9.8%.

Hence, the correct option is __D. ____H__**_{0}: p = 0.098 and H_{a}: p < 0.098**.

Step 2

The test statistic value is __- 0.76__ and it is obtained below:

Here, the sample size is, *n* = 1045; in those 95 using illegal drugs. The sample proportion is *p̂* =0.091(=95/1045)

Step 3

The *P*-value is **0.2236** and it is calcula...

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