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A phone company plans on offering their new smartphone in four colours: white, black, silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% will prefer black, 20% will prefer silver and 15% will prefer rose gold. They perform market research by asking a random sample of 350 potential customers which colour they prefer. Colour Frequency White 100 Chi Square Distribution table Black 129 Silver 90 Rose Gold 31 Can the company conclude that their expected distribution was accurate using a 5% level of significance?

A phone company plans on offering their new smartphone in four colours: white, black, silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% will prefer black, 20% will prefer silver and 15% will prefer rose gold. They perform market research by asking a random sample of 350 potential customers which colour they prefer. Colour Frequency White 100 Chi Square Distribution table Black 129 Silver 90 Rose Gold 31 Can the company conclude that their expected distribution was accurate using a 5% level of significance?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 8E
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a. Calculate the test statistic. X Round to two decimal places if necessary b. Determine the critical value(s) for the hypothesis test. C. Conclude whether to reject the null hypothesis or not based on the test statistic. K Reject SAMSUNG SUBMIT QUESTION A SAVE PROGRESS SUBMIT ASSIGNMEN 12
Transcribed Image Text:a. Calculate the test statistic. X Round to two decimal places if necessary b. Determine the critical value(s) for the hypothesis test. C. Conclude whether to reject the null hypothesis or not based on the test statistic. K Reject SAMSUNG SUBMIT QUESTION A SAVE PROGRESS SUBMIT ASSIGNMEN 12
A phone company plans on offering their new smartphone in four colours: white, black, silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% will prefer black, 20% will prefer silver and 15% will prefer rose gold. They perform market research by asking a random sample of 350 potential customers which colour they prefer. Colour Frequency White 100 Chi Square Distribution table Black 129 SAMSUNG Can the company conclude that their expected distribution was accurate using a 5% level of significance? Silver 90 SUBMIT QUESTION Rose Gold 31 SAVE PROGRESS SUBMIT ASSIGE
Transcribed Image Text:A phone company plans on offering their new smartphone in four colours: white, black, silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% will prefer black, 20% will prefer silver and 15% will prefer rose gold. They perform market research by asking a random sample of 350 potential customers which colour they prefer. Colour Frequency White 100 Chi Square Distribution table Black 129 SAMSUNG Can the company conclude that their expected distribution was accurate using a 5% level of significance? Silver 90 SUBMIT QUESTION Rose Gold 31 SAVE PROGRESS SUBMIT ASSIGE
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