Suppose A new study conducted by researchers at a leading university found that students who slept for at least 8 hours per night had higher academic performance compared to those who slept for less than 6 hours per night. The study also revealed that a majority of students reported feeling more alert and focused after a good night's sleep.
Can we infer that "The study concluded that all students who slept for at least 8 hours per night had higher academic performance."? Yes, no, or maybe?