The following 5 questions are based on this information: an economist claims that average weekly food expenditure of households in city 1 is more than that of households in city 2. she surveys 35 households in city 1 and obtains an average weekly food expenditure of $164. a sample of 30 households in city 2 yields an average weekly expenditure of $159. historical data reveals that the population standard deviation for city 1 and city 2 are $12.50 and $9.25, respectively. city 1city 2x1(bar)=164x2 (bar) =159σ(1)=12.5σ(2) =9.25n(1)=35n2=30let μ(1) be the mean weekly food expenditure for city 1 and μ(2) be that for city 2.1. to test the economist’s claim, the competing hypotheses should be formulated asselect one: a. h0: μ1-μ2> 0 versus ha: μ1-μ2≤0b. h0: μ1-μ2≥0 versus ha: μ1-μ2< 0c. h0: μ1-μ2≤0 versus ha: μ1-μ2> 0