Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 75 GPa and 2 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.) A USE SALT (a) Calculate P(74 SXS 76) when n= 16. (b) How likely is it that the sample mean diameter exceeds 76 when n = 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.