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Katena32 [7]
3 years ago
9

Because sample means were being tested, the ___ is used to calculate the z-score

Mathematics
2 answers:
sergeinik [125]3 years ago
7 0

Formula to calculate Z score

   Z_{score}=\frac{a-b}{c}

Where,   a=Population mean

b=Sample Mean

c=Standard Deviation of the sample

Because sample means were being tested, "The Sample Standard Deviation and Population Mean" is used to calculate the z-score

Vinvika [58]3 years ago
6 0
<span>Because sample means were being tested, the bell curve is used to calculate the z-score</span>
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Step-by-step explanation:

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f(x) = (x+10)² -3 ....vertex form

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Decimals from least to greatest please help put in order. 2.2, 2.15, 2.2012, 2.501
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Answer:

  (x, y) → (-∞, -∞), (+∞, +∞)

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lubasha [3.4K]

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<u>Solution:</u>

\text { Given, equation is } y=x^{2}+8 x+15

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By using intercept form, we can put value of y as  to obtain zeros of function

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\begin{array}{l}{\rightarrow x^{2}+(5+3) x+5 \times 3=0} \\\\ {\rightarrow x^{2}+5 x+3 x+5 \times 3=0}\end{array}

Taking “x” as common from first two terms and “3” as common from last two terms

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