2. A grocery store's receipts show that individual Sunday customer purchases have a very skewed distribution with a mean of $32 and a standard deviation of $20. a) If we consider a random sample of 50 Sunday customers, give the properties (and provide a sketch) for the sampling distribution for the sample mean purchase. b) Find the probability the sample of 50 Sunday customers will have a mean purchase between $28 and $36?

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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.