An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 1. Calculate the following for each data set: (proper significant figures, neglect units) a) Mean for student A b) Mean for student B c) Relative standard deviation for student A d) Relative standard deviation for student B e) Confidence Level for Student A at 95% (write as a range for example: 200-300) f) Confidence Level for Student B at 95% (write as a range for example: 200-300) g) Which of the student have a more precise result? (write STUDENT A or STUDENT B)
Essential nutrients
These are the organic compounds present in the food that provide nourishment essential for the development and growth of our body. Nutrients not only provide us with the required energy to carry out various biological processes but are also the building blocks for repair and growth in our bodies.
Vitamins
The vitamins are organic molecules required in low concentration for the proper functioning of the body. They cannot be generated in the organism and are taken into the body through the diet. The lack of proper vitamins results in diverse deficiency disorders. They are thus called essential nutrients. The important vitamins are vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin K, and vitamin E.
An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3):
Student A: 228.3, 226.4, 226.9, 227.1, and 228.6.
Student B: 229.5, 226.1, 230.7, 223.8, and 227.5
1. Calculate the following for each data set: (proper significant figures, neglect units)
a) Mean for student A
b) Mean for student B
c) Relative standard deviation for student A
d) Relative standard deviation for student B
e) Confidence Level for Student A at 95% (write as a range for example: 200-300)
f) Confidence Level for Student B at 95% (write as a range for example: 200-300)
g) Which of the student have a more precise result? (write STUDENT A or STUDENT B)
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