Final answer:
Joan Jett is not an actress, she is primarily known as an American rock guitarist, singer, and producer.
Step-by-step explanation:
The statement 'Joan Jett is an American rock guitarist, singer, producer and actress' is false. Joan Jett is an American rock guitarist, singer, and producer, but she is not an actress. While Jett has made appearances in a few films and TV shows, her primary focus has been on her music career. She is best known for her role as the frontwoman of the band Joan Jett & the Blackhearts and for her hit songs like 'I Love Rock 'n' Roll.'