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A pet association claims that the mean annual cost of food for cats and dogs are the same. The results for samples for the two types are shown below. At a=.10, can you reject the pet association s claim? Assume the population variances are not equal. Assume the samples are random and independent, and the populations are normally distributed. Complete c through e.
Dogs
-x1 = $268
s1 = $39
n1 = $18
Cats
-×2 = $233
s2 = $35
n2 = 8
C. Find the standardized test statistic.
D. Decide whether to reject or fail to reject the null hypothesis.
E. Interpret the decision in the context of the original claim.
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