A psychologist conducted a survey of the attitude towards the sustainability of American energy consumption with 250 250 randomly selected individuals several years ago. The psychologist believes that these attitudes have changed over time. To test this he randomly selects 250 250 individuals and asks them the same questions. Can the psychologist confirm his theory that the attitudes have changed from the first survey to the second survey?Attitude1st Survey2nd SurveyOptimistic6% 10%Slightly Optimistic 13%7%Slightly Pessimistic20% 23%Pessimistic61%60% Step 6 of 10 : Find the value of the test statistic. Round your answer to three decimal places.Step 7 of 10:find the degrees of freedom associated with the test statistic.Step 8 of 10 : Find the critical value of the test at the 0.005 level of significance. Round your answer to three decimal places.step 9 of 10:make the decision to reject or fail to reject the null hypothesis at 0.005 level of significance.step 10 of 10:state the conclusion of the hypothesis test at the 0.005 level of significance

Name: A psychologist conducted a survey of the attitude towards the sustaina
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A psychologist conducted a survey of the attitude towards the sustainability of American energy consumption with 250 250 randomly selected individuals several years ago. The psychologist believes that these attitudes have changed over time. To test t

Null hypothesis: H0: The proportion of 1st survey and 2nd survey are equal. Alternative hypothesis:…

Answered: A psychologist conducted a survey of…

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

Topic Video

Question

A psychologist conducted a survey of the attitude towards the sustainability of American energy consumption with 250 250 randomly selected individuals several years ago. The psychologist believes that these attitudes have changed over time. To test this he randomly selects 250 250 individuals and asks them the same questions. Can the psychologist confirm his theory that the attitudes have changed from the first survey to the second survey?

Attitude	1st Survey	2nd Survey
Optimistic	6%	10%
Slightly Optimistic	13%	7%
Slightly Pessimistic	20%	23%
Pessimistic	61%	60%

Step 6 of 10 :

Find the value of the test statistic. Round your answer to three decimal places.

Step 7 of 10:

find the degrees of freedom associated with the test statistic.

Step 8 of 10 :

Find the critical value of the test at the 0.005 level of significance. Round your answer to three decimal places.

step 9 of 10:

make the decision to reject or fail to reject the null hypothesis at 0.005 level of significance.

step 10 of 10:

state the conclusion of the hypothesis test at the 0.005 level of significance

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 1 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

can i see more step by step approach?

Solution

by Bartleby Expert

SEE SOLUTION

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

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