Question

According to a recent study_published in Journal of Infection and Public Health on February 8, 2021, the the COVID-19 incubation period is a random variable with a m can of around 5.2days and a standard deviation is 2.4 days. What is the probability that the mean incubation period of a randomly sample of 36 confirmed cases ranges from 4.4 to 5.5 days? Round your answer to four decimal places.

Fig: 1