Almost all of the mass of the human body is made up of just six elements. • Oxygen 65%
• Carbon 18%
• Hydrogen 10%
• Nitrogen 3%
• Calcium 1.5%
• Phosphorus 1.0%
Find the mass of each element in a human body with a mass of 60 kg.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

How can you find the mean absolute deviation (mad) for this set of data?