Q6. A new hair-styler wants to decide about the hair-colouring pricing and she believes that standard hair colouring should be charged no less than 830. She has no record on hair-colouring prices. She took a sample of size 20 and asked about money they are charged for and she found that s = $4.5 and sample means is $28. Decide about the claim that she believes in using a significance level of 0.025.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 1CA
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Q6. A new hair-styler wants to decide about the hair-colouring pricing and she believes that
standard hair colouring should be charged no less than $30. She has no record on hair-colouring
prices. She took a sample of size 20 and asked about money they are charged for and she found
that s = $4.5 and sample means is 828. Decide about the claim that she believes in using a
significance level of 0.025.
Transcribed Image Text:Q6. A new hair-styler wants to decide about the hair-colouring pricing and she believes that standard hair colouring should be charged no less than $30. She has no record on hair-colouring prices. She took a sample of size 20 and asked about money they are charged for and she found that s = $4.5 and sample means is 828. Decide about the claim that she believes in using a significance level of 0.025.
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