A study is performed in San Antonio to determine whether the average weekly grocery bill per five-person family in the town is significantly different from the national average. Assume that the national average weekly grocery bill for a five-person family is $131. A random sample of 50 five-person families in San Antonio showed a mean of $133.474 and a standard deviation of $11.193.

1. State the null and alternative hypotheses. Is it a one-tailed or two-tailed test?

2. Based on the sample data, what is the t-test statistic? What is the p-value?

3. Using a .05 level of significance, what is your conclusion? In other words, can you reject the null hypothesis?