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What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12 : Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select

What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12 : Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12 : Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select
Transcribed Image Text:What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12 : Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select
Expert Solution
Step 1 :

Given information :

Sample mean for manufactures A , x̅A = 142

Sample mean for manufactures B , x̅B = 140

Population standard deviation for manufactures A ,  σA = 4.

Population standard deviation for manufactures B , σB = 5

Sample size for A and B is same that is , nA = nB= 68.

Significance level , α = 0.1.

Step 2 : Hypotheses Information.

Claim : The voltage of the batteries made by two manufacturers is different.

For the word "different" we use ≠ inequality.

The null and alternative hypotheses are as follows;

Ho : µA = µB

Ha : µA  ≠ µB

Since we have ≠  inequality in alternative hypotheses so it is Two tailed test.

 

Step 3 :

Part 1)

Here note that "Population Standard deviations" are known to us so we will perform Z test for two samples.

 

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