Question 2 The incubation period refers to the number of days between being in contact with an infected person and actually showing symptoms of being infected. Health care professionals say that the mean incubation period of COVID19 is 12 days with a standard deviation of 2 days This accounts for the 14day quarantine period. With the recent upsurge of infections due to the different variants of the virus, a group of researchers surveyed 16 confirmed cases. These are their incubation periods: 8, 8, 8.5, 9, 9.5, 10, 10, 10.25, 11, 12, 12.25, 12.5, 12.5, 12.75, 13, & 14.5. Is there enough evidence to show that the mean incubation period has actually decreased? Test at 1% level of significance. Find the value of the test statistic. -2.29 @ 057 -0.57 2 Points