Answered: In a study of cell phone usage and…

Name: In a study of cell phone usage and brain hemispheric dominance, an In
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6986 subjects randomly selected from an online group involved with ears. There were 1288 surveys returned. Use a 0.01 significance level to test the

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

See similar textbooks

Related questions

Concept explainers

Topic Video

Question

In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6986 subjects randomly selected from an online group involved with ears. There were 1288 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution.

Identify the null hypothesis and alternative hypothesis.

A. H0: p=0.2 H1: p≠0.2

B. H0: p>0.2 H1: p=0.2

C. H0: p=0.2 H1: p<0.2

D. H0: p<0.2 H1: p=0.2

E. H0: p≠0.2 H1: p=0.2

F. H0: p=0.2 H1: p>0.2

The test statistic is

z= ____

(Round to two decimal places as needed.)

The P-value is ____.

(Round to three decimal places as needed.)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 6 images

SEE SOLUTION Check out a sample Q&A here

Follow-up Questions

Read through expert solutions to related follow-up questions below.

Follow-up Question

In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to

6999

subjects randomly selected from an online group involved with ears. There were

1310

surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution.

Solution

by Bartleby Expert

SEE SOLUTION

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

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

Similar questions