5 points )9 The amount of time in minutes that Ms East spends reading an article on an online news site follows a normal distribution with mean 8 minutes and variance 16. Ms East reads seven such articles and the time taken to read each article is independent of one another. Let U denote the number of these articles Ms East reads between 6 and 9 minutes. Find the probability that Ms East reads only 3 articles between 6 and 9 minutes. 0.5543 0.7829 0.2171 0.3455 OOOOO None of the above