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yuradex [85]
3 years ago
15

Rainforest data: mean = 7  σ2 = 12.405  σ ≈ 3.522 when using the formula zx = x − μ σ for the z-score for the 11.7 data point: x

= ; μ =
Mathematics
2 answers:
sergejj [24]3 years ago
6 0

Answer:

1.3344

Step-by-step explanation:

Given is the rainforest data.

Let X be the random variables

Then X has mean as 7 and variance as 12.405

SD of X = square root of variance = 3.522

We know that

Z = \frac {X-\mu}{\sigma}\\=\frac{11.7-7}{3.522} \\=1.3344

Z value when x = 11.7 is +1.3344

11111nata11111 [884]3 years ago
4 0

Answer:

Mean B =μ= 7

Standard Deviation =A=σ ≈ 3.522

Variance =σ²=12.405

X=Score=Data Point=11.7

As, Z=\frac{X- B}{A}

z-score for the Score 11.7

=\frac{11.7-7}{3.522}\\\\=\frac{4.7}{3.522}\\\\Z=1.3344

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\bigstar\boxed{\large\bf\purple{\leadsto \$3150}}

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