In Jamaica, the Covid-19 virus vaccine has finally arrived. The number of cases administered daily to healthcare and essential workers registered at a facility is normally distributed with a mean of 160 and a variance of 900. What is the probability that from a random sample of 6 healthcare facilities, no less than 180, on average, would have been vaccinated at the end of the day? Select from the options: Select one: a. 0.0516 b. 0.9484 c. 0.5199 d. 0.4801 - this is what I chose however it was wrong