Option B: Use the confidence interval formula above, and the correct formula for proportion, to calculate the 95% confidence interval for any population proportion of your choice. Tell what qualitative variable you chose. Then, write down (invent) the sample size (be sure it is 30 or above) and the sample proportion. Then, calculate the confidence intérval. Remember, you are inventing all the values, so no two posts should look the same.

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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.