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Goodness of Fit Test
13. Chi-Square Tests & Goodness of Fit / Goodness of Fit Test / Problem 5
Problem 5

A streaming service claims that the distribution of user preferences for movie genres follows this national pattern:
Action: 30%30\%
Comedy: 25%25\%
Drama: 20%20\%
Horror: 15%15\%
Science Fiction: 10%10\%
A survey of 400400 randomly selected users from the platform gives the following results:

At α=0.05\alpha=0.05, test the claim that the streaming service users' preferences match the national distribution.