A consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. Does the data indicate that there is a difference in the mean lifetime of the three brands. Brand 1 Brand 2 Brand 3 260 181 238 218 240 257 184 162 241 219 218 213 Hypothesis Ho: .На: Decision Conclusion

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.