Marine biologists have been studying the effects of acidification of the oceans on weights of male baluga whales in the Arctic Ocean. One of the studies involves a random sample of 16 baluga whales. The researchers want to create a 95% confidence interval to estimate the true mean weight of male baluga whales. Their data follow a normal distribution.The population standard deviation of weights of male baluga whales is sigma = 125 kg, and the researchers feelcomfortable using this standard deviation for their confidence interval.

Assuming the relevant requirements are met, calculate the margin of error in kilograms when estimating the true mean weight of male baluga whales in the Arctic Ocean. (show work,round 2 decimal places) ______

What sample size would be required if the researchers wanted the margin of error to be 45kg?(show work,round to nearest whole number) ______

Are the requirements for the use of a confidence interval met? ______