For the given claim, complete parts (a) and (b) below.

Claim: High school teachers have incomes with a standard deviation that is more than $19, 250. A recent study of 149 high school teacher incomes showed a standard deviation of $21,250.

a. Express the original claim in symbolic form.

b. Identify the null and the alternative hypotheses that should be used to arrive at a conclusion that supports the claim: H0: ___ ___ H1:___ ___ ___