12.3.11 Find (a) the range, and (b) the standard deviation for the given sample.
84.48, 84.37, 84.25, 85.02, 85.02, 85.28, 84.64, 84.33, 85.67 O
(a) Find the range of the given sample.
Range = 1.42
(Simplify your answer. Type an integer or a decimal.)
(b) Find the standard deviation of the given sample.
S =
(Simplify your answer. Type an integer or decimal rounded to the nearest hundredth as needed.)

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

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step-by-step explanation:

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step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value