A student majoring in Management who has passed the Business course Statistics I suspect that the average price of lunch in the Binus canteen has increased happy pandemic. Before the pandemic, the price for lunch he paid was IDR 21000, IDR 22000, IDR 22500, IDR 23000, IDR 23500. After the pandemic, he paid IDR 25000, IDR 25500, IDR 30000, IDR 27000, and IDR 26500.

Question:

a) Perform an analysis of hypothesis testing to find out whether there has been an increase in the price of lunch on average (Use six Step Hypothesis Testing)

b) Interpret (explain and explain) the results of point a above!??