How many people reviewed for product named HL Mountain Pedal? What is the average rating?
AVG(Rating) = DIVIDE(SUM(rating), COUNT(ReviewerName))
SELECT COUNT(T1.ProductID), AVG(T2.Rating) FROM Product AS T1 INNER JOIN ProductReview AS T2 ON T1.ProductID = T2.ProductID WHERE T1.Name = 'HL Mountain Pedal'