Suppose a data set has a mean 50 and standard deviation 5. If the Z-score of a data value is -2, what is the actual score?

SAT

1 answer:

ddd [48]2 years ago

4 0

Answer:

The Z-score is (25–50)/5 = -5. A Z-score that high in absolute value is extremely rare.

Explanation:

hope it helps

You might be interested in

In a newspaper, it was reported that the number of yearly robberies in Springfield in 2012 was 200, and then went down by 14% in

slamgirl [31]

Answer:

172

Explanation:

you multiply the 200 times the 14% in a format suvh as this, 200x.14 because 14% is out of 100% and you can see the 100% as 1.00, then the answer is 28 and subtract 28 from 200 ant that equals 172.

6 0

3 years ago

If sin(1/x^2+1) is an antiderivative for f(x) then.

STatiana [176]

The limit from 1 to 2 of the given antiderivative is; -0.19865

<h3>What is the Limit of the Integral?</h3>

We are given the antiderivative of f(x) as sin(1/(x² + 1)). Thus, to find the limit from 1 to 2, we will solve as;

$\int\limits^2_1 {(sin\frac{1}{x^{2} + 1} )} \, dx = {(sin\frac{1}{2^{2} + 1} )} - {(sin\frac{1}{1^{2} + 1} )}$

⇒ (sin ¹/₅) - (sin ¹/₂)

⇒ 0.19866 - 0.47942

⇒ -0.19865

Complete Question is;

If sin(1/(x² + 1)) is an anti derivative for f(x), then what is the limit of f(x)dx from 1 to 2?

Read more about integral limits at; brainly.com/question/10268976

8 0

2 years ago

For the galvanic (voltaic) cell fe(s) + mn²⁺(aq) ⟶ fe²⁺(aq) + mn(s) (e° = 0.77 v at 25°c), what is [fe²⁺] if [mn²⁺] = 0.050 m an

Nuetrik [128]

The concentration of Iron in the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) is 0.02297 M.

<h3>What is the Nernst Equation?</h3>

The Nernst equation enables us to identify the cell potential(voltage) in presence of non-standard conditions in a galvanic cell. It can be expressed by using the formula:

$\mathbf{E_{cell} = E_o - \dfrac{0.059}{n} \times log \dfrac{[Fe^+]}{[Mn^{2+}]}}$