200 high school students were surveyed about whether they driving or taking the bus to school. 145 preferred driving. Find the margin of error with the given conditions. Round to four decimal places.

step-by-step explanation:

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for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

hence, the required result is

step-by-step explanation:

suppose we have two matrices a and b

we will assume the two matrices

we have to compute b-a which means subtracting corresponding elements of a from b.

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