The dealership plans to increase the size of the sample so that the standard deviation of the sample mean is no more than $175. Given that the true standard deviation of the price of a Civic is $825, find the sample size the dealership should use? (Hint: use the formula σ=sn)

22

Step-by-step explanation:

Given that:

Standard deviation of sample mean (s) = 175

True standard deviation (σ) = 825

Sample size of dealership = n

s = σ/ √n

175 * √n = 825

Divide both sides by 175

√n = 825 / 175

√n = 4.71428

Square both sides

n = 22.22

n = 22 samples

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a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|