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I need help with SQL query for this question - What is the average of the average rental rate for each movie rating? (Hint: Find

I need help with SQL query for this question

- What is the average of the average rental rate for each movie rating?

(Hint: Find out the average rental rate of each rating and then compute the average of those numbers an average of averages.)

Display: Just one number the average of the average rental rate per rating.

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