Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. E Click the icon view the data table. The mean is u= girl(s). (Round to one decimal place as needed.) The standard deviation is a= girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x P(x) 0.004 1 0.027 0.102 0.213 0.294 0.216 0.107 0.035 0.002

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.