Answered: In a recent study; it was found that 62…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Concept explainers

Question

In a recent study; it was found that 62 percent of college students drink heavily and drive. Assuming all conditions are met, a police chief wanting to enact an emergency protocol for DWI/DUI wants to know if the claim is accurate. He took a sample of 70 college students who drank and drove and found that 46 of those students had a high blood alcohol level. Can we claim that more than 62 percent of all college students drink heavily and drive?

Expert Solution

Step 1

The hypotheses can be constructed as:

Null hypothesis: H₀: p = 0.62

Alternative hypothesis: H₁: p > 0.62

The test is one tailed.

Given:

Sample size of students who drank and drove (n) = 70

Number of students who had a high blood alcohol level (x) = 46

The sample proportion can be obtained as:

Step 2

The single proportion z-test will be used. The value of the test statistic can be obtained as:

Step by step

Solved in 3 steps with 2 images

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions