PHANTOMS Parameter: µi- population mean of higher number of accounts (4-6) µ2- population mean of lower number of accounts (1-3) Hypothesis: Ho: µi-µ2 = 0 HA: µi- µ2> 0 (claim) Assumptions: Independent- Yes, n=71 is less than 5% of the population Normal- n= 71, so 71> 30 Random-Proceed with caution Name the Test: 2-SampleTTest Test Statistic: 9.034216428 z 9.03 Obtain P-value: .0000 Make Conclusion: .0000 < .05 Reject Ho State the conclusion in context: There is sufficient evidence to support the claim that the mean of the higher minus the lower accounts is greater than 0. Type

PHANTOMS Parameter: µi- population mean of higher number of accounts (4-6) µ2- population mean of lower number of accounts (1-3) Hypothesis: Ho: µi-µ2 = 0 HA: µi- µ2> 0 (claim) Assumptions: Independent- Yes, n=71 is less than 5% of the population Normal- n= 71, so 71> 30 Random-Proceed with caution Name the Test: 2-SampleTTest Test Statistic: 9.034216428 z 9.03 Obtain P-value: .0000 Make Conclusion: .0000 < .05 Reject Ho State the conclusion in context: There is sufficient evidence to support the claim that the mean of the higher minus the lower accounts is greater than 0. Type

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

I need help identifying any flaws in my study and whether it is a type I or type II error.

PHANTOMS
Parameter: µi- population mean of higher number of accounts (4-6)
µ2- population mean of lower number of accounts (1-3)
Hypothesis: Ho: µi-µ2 = 0
HA: µi- µ2> 0 (claim)
Assumptions: Independent- Yes, n=71 is less than 5% of the population
Normal- n= 71, so 71> 30
Random-Proceed with caution
Name the Test: 2-SampleTTest
Test Statistic: 9.034216428 z 9.03
Obtain P-value: .0000
Make Conclusion: .0000 < .05 Reject Ho
State the conclusion in context: There is sufficient evidence to support the claim that the mean of
the higher minus the lower accounts is greater than 0.
Type

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