It has been found that 2 out of every 10 people who visit a retail website make a purchase worth R1 000 or more. If we randomly select a sample of 9 visitors to the website, what is the probability that no more than three of the visitor swill make a purchase worth R1 000 or more? Interpret your answer. The score obtained on a learner's driving test is normally distributed, with an average score (µ) of 67 and a standard deviation (o) of 2.5. What is the probability that a randomly selected person will: Obtain a score between 68 and 70? Interpret your answer. Obtain a score between 65 and 71? Interpret your answer.