7. A pediatrician claims that the mean birth weight of a single-birth baby is greater than the mean birth weight of a baby that has a twin. The mean birth weight of a random sample of 85 single-birth babies is 3086 grams with a standard deviation of 563 grams. The mean birth weight of a random sample of 68 babies that have a twin is 2263 grams with a standard deviation of 624 grams. At a = 0.10, can you support the pediatrician's claim? Interpret the decision in the context of the original claim.

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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.