Question

Asked Mar 19, 2019

Step 1

**Test hypothesis:**

Denote the population proportion of people wearing seat belts as *P**.*

The investigator is interested to test whether the population proportion of people wearing seat belts is less than 0.65 or not.

*The hypotheses are given below:*

*Null hypothesis:*

*H*_{0} : *P* = 0.65

That is, the population proportion of people wearing seat belts is equal to 0.65.

*Alternative hypothesis:*

*Ha* : *P* < 0.65 (Left tail test).

That is, the population proportion of people wearing seat belts is less than 0.65.

Step 2

**Given information:**

Here, it is given that among a random sample of 200 drivers, 126 drivers wear seat belts.

The *P–*value is determined as 0.277 and the level of significance is α = 0.05.

Step 3

**Decision rule:**

*Decision rule based on P-value approach:*

If *P*-value ≤ α, then reject the null hypothesis* H*0.

If* P*-value >...

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