Can anyone explain it?

The mean cost of raising a child from birth to 2 years by husband-wife families is $13,120 as calculated by the Federal Government statistical data department. This has caused couples to demand a tax break from the state. To verify the authenticity, the state randomly samples 500 children (age 2) and had a mean cost of $12,925 with a population standard deviation of $1745. At alpha = 0.05, is there enough evidence to reject the claim? A. State null and alternate hypothesis statements B. Calculate the Test statistic C. What is the appropriate p-value? D. Interpret the results in the context of the