Help please

A student takes a twenty-question true/false exam but does not study and randomly guesses each answer. What is the probability that the student scores a 75% on the exam? To solve this problem, we must first determine how many correct answers are necessary for a student to score 75%. This will be 15 out of 20 questions. Next, the R script can be used to determine the probability. To use the R script to answer this question, make the following changes: 1. distribution