The following are the temperatures in °C for the first 12 days of January:
2, -1.5, -1, 4, 5, -0.5, 3.5, 3, -4.5, -3, 6, 1.5
What is the median temperature for those 12 days?
Give your answer as a decimal.

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)