5N581 Hidden Springs Dr          St. Charles, IL 60175            630-377-5035
 

Female DIY Customer Satisfaction

There is an increase in the number of female Do-It-Yourself-ers (DIY).  Research suggests that female DIY’s are already a $6 billion market and are growing at a 9% rate annually. Which of the two home improvement stores, ‘The Home Shop’ or ‘Manerts’, serves this growing population better? Assume the known variance is 3 for the DIY’s at The Home Shop and 4.3 for DIY’s at Manerts. Is there a significant difference in the female DIY customer satisfaction of the two home improvement stores? Provide statistical evidence at 5% and 10% significance levels.                                                                                               

The following data displays customer satisfaction ratings for the two stores (10 high, 0 low).