Suggestions

Thanks for the review! I will include how I measured the accuracy in the hypothesis.
Regarding the Fast and Furious 7 review, there could some words that the classifier failed to study. The Fast and Furious 7 review probably has fewer words that are similar to the training dataset of positive reviews. Like TianQiChen has mentioned the tool gave "extremely entertaining" a 58% positive but "7" a 81% negative.