1) A restaurant chain claims that 15% of its customers are vegetarians, 40% are omnivores, and 45% are pescatarians. In a survey of 250 customers, the following data was collected: Dietary Preference Vegetarian Omnivore Pescatarian Observed Frequency 40 100 110 Assuming a significance level of 1%, what is the conclusion that the restaurant owner can come to?

Given data:

The objective is to validate if the percentage of vegetarian, omnivore, and pescatarian customers are $15\mathrm{\%},40\mathrm{\%}$, and $45\mathrm{\%}$ respectively.