For the data of Exercise 4.4, calculate the variance using the formula (a) Of form (4.2.1); (b)
Question:
For the data of Exercise 4.4, calculate the variance using the formula
(a) Of form (4.2.1);
(b) In Theorem 4.1.
Exercise 4.4
According to ecology writer Jacqueline Killeen, phosphates contained in household detergents pass right through our sewer systems, causing lakes to turn into swamps that eventually dry up into deserts. The following data show the amount of phosphates per load of laundry, in grams, for a random sample of various types of detergents used according to the prescribed directions:
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Related Book For 
Essentials Of Probability And Statistics For Engineers And Scientists
ISBN: 9780321783738
1st Edition
Authors: Ronald E. Walpole, Raymond Myers, Sharon L. Myers, Keying E. Ye
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