Question
A pet store owner believes that dog owners spend more on average than cat owners on their pets. The owner randomly records the sales of
A pet store owner believes that dog owners spend more on average than cat owners on their pets. The owner randomly records the sales of 40 customers that said they only owned dogs and 40 customers that said they only owned cats. What is the correct decision and summary based on the Excel output below? Assume the populations are approximately normally distributed with unequal variances. t-Test: Two-Sample Assuming Unequal Variances Dog Cat Mean 57.1695 53.82225 Variance 588.088 573.7205 Observations 40 40 Hypothesized Mean Difference 0 df 78 t Stat 0.6211 P(T<=t) one-tail 0.2682 t Critical one-tail 1.6646 P(T<=t) two-tail 0.5363 t Critical two-tail 1.9908
What is the correct test statistic?
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