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4 December, 22:58

The mean weight of loads of rock is 46,0 tons with a standard deviation of 12.0 tons. If 16 loads are

chosen at random for a weight check, find the probability that the mean weight of those loads is less

than 44,6 tons. Assume that the variable is normally distributed

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  1. 4 December, 23:15
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    Step-by-step explanation:

    Graphing Linear Inequalities

    This is a graph of a linear inequality:

    linear inequality y < = x + 2

    The inequality y ≤ x + 2

    You can see the y = x + 2 line, and the shaded area is where y is less than or equal to x + 2

    Linear Inequality

    A Linear Inequality is like a Linear Equation (such as y = 2x+1) ...

    ... but it will have an Inequality like, ≤, or ≥ instead of an =.

    How to Graph a Linear Inequality

    First, graph the "equals" line, then shade in the correct area.

    There are three steps:

    Rearrange the equation so "y" is on the left and everything else on the right.

    Plot the "y=" line (make it a solid line for y≤ or y≥, and a dashed line for y)

    Shade above the line for a "greater than" (y> or y≥)

    or below the line for a "less than" (y< or y≤).

    Let us try some examples:

    Example: y≤2x-1

    1. The inequality already has "y" on the left and everything else on the right, so no need to rearrange

    2. Plot y=2x-1 (as a solid line because y≤ includes equal to)
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