A manager for an insurance company believes that customers have the following preferences for life insurance products: 40%

40% prefer Whole Life, 30%

30% prefer Universal Life, and 30%

30% prefer Life Annuities. The results of a survey of 370

370 customers were tabulated. Is it possible to refute the sales manager's claimed proportions of customers who prefer each product using the data?

ProductNumberWhole107

107Universal137

137Annuities126

126

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Step7of10:Find the degrees of freedom associated with the test statistic for this problem.