#7-9: The number of minutes that people spend with their dog at a dog park has u = 48.5 minutes and o = minutes. Let random variable X represent the time a person spends at the dog park. 10.8 %3D 7)...

Extracted text: #7-9: The number of minutes that people spend with their dog at a dog park has u = 48.5 minutes and o = minutes. Let random variable X represent the time a person spends at the dog park. 10.8 %3D 7) If thirty visitors are randomly selected, find P(X> 45)