Q#2: the weight of 5 person before they stopped smoking and 5 weeks after they stopped smoking are as follow Person Before 1 2 3 155 4 120 138 55+roll# 166 176 After Use t test for paired observation to test the hypothesis at 0.05 level of significance, that giving up smoothing has no effect on a person's weight. Let critical region is 2.776 164 161 131 65+roll#

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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.