QUESTION BELOW

Warehouse stores are popular among customers with various backgrounds due to their attractive discounts on big-ticket items, and the warranties and benefits included in their membership card levels. Pre-pandemic, the proportion of the population who historically apply for the G1, G2, and G3 level cards are 0.6. 0.3, and 0.1, respectively. In a recent promotional campaign, of 280 new applicants, 162 applied for G1, 76 for G2, and 42 for G3 level cards. Based on the information, you want to conduct a test if there is sufficient evidence to suggest that the proportions for this campaign during the pandemic may have changed the historical proportions? What is the value of the appropriate test statistic