Final answer:
The question initially asked is missing crucial information about the fraction or percentage of homework completed by the student. If it were two-thirds, the student would have completed 20 questions. For statistical probabilities like the ones mentioned in reference, binomial distribution calculations are typically used.
Step-by-step explanation:
The question given to us states that a student has 30 homework questions to complete. However, it appears that there is a missing fraction or percentage that indicates how much of the homework the student completes before basketball practice. Without this critical piece of information, it is not possible to determine the exact number of questions the student completes. If we assume that the missing part of the question specified that the student completed two-thirds or approximately 66.67% of the homework, then the student would have completed 20 questions (as 2/3 of 30 equals 20).
Looking at the provided reference information, when discussing probabilities and statistics problems such as those related to students completing homework on time or guessing answers on a quiz, we perform calculations based on the given data. For instance, to find the probability that at least 40 out of 50 students complete their homework on time, given a 70% chance that any individual student will do so, we would use the binomial distribution formula. Similarly, for a student guessing answers on a true-false quiz, the probability of guessing at least 70% correctly would require calculating the binomial probabilities for the student getting 7, 8, 9, or 10 questions right and summing them up. In any statistics class or probability theory, when performing such analysis, the goal is to apply the correct mathematical formulas and consider the specific conditions given, like the number of trial repetiutions, probability of success in a single trial, and the desired number of successes.