Answer: 2
Step-by-step explanation:
Given : There is an annual hot dog eating contest in Plattsburg, MS and the average number of hot dogs eaten by one person

Standard deviation :

let X be a random variable that represents the number of hot dogs eaten by any person in annual hot dog eating contest .
The formula to calculate the critical value of z is given by :-

For


Hence, the critical value for a person who can eat more than 2 deviations above the mean = 2.