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EastWind [94]
3 years ago
14

"A researcher collects 25 data points that yield a mean of 8.164 and a standard deviation (based on N – 1) of 2.237. What is the

standard error for the distribution of means?"
Mathematics
2 answers:
aleksley [76]3 years ago
6 0

Answer:

Standard error for the distribution of means = 0.4474

Step-by-step explanation:

Standard error for the distribution of means is given as

σₓ = σ/√n

where σ = standard deviation = 2.237

n = sample size = 25

σₓ = (2.237/√25)

σₓ = 0.4474

Hope this Helps!!!

Oxana [17]3 years ago
6 0

Answer:

The standard error for the distribution of means is 0.457.

Step-by-step explanation:

The standard error for the distribution of means is given as sample standard deviation divided by the square root of (N - 1)

sample standard deviation = 2.237

N is sample size = 25

Standard error = 2.237 ÷ sqrt(25 - 1) = 2.237 ÷ sqrt(24) = 2.237 ÷ 4.899 = 0.457

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san4es73 [151]

Answer:

a.Z(-2,1)

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z(-2,3)

Imagine this point on a graph.

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Z(-2,1)

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Z(1,1)

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3 years ago
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Step-by-step explanation:

Yeah this is the answer

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What equation of the line that has a slope of -4 and passes through the point (-2,-5)? Answer ASAP!!
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Answer:

<em>Given </em><em>points </em><em>are </em><em>(</em><em> </em><em>-</em><em>2</em><em> </em><em>,</em><em> </em><em>-</em><em>5</em><em> </em><em>)</em><em> </em><em>and </em><em>slope </em><em>(</em><em> </em><em>m</em><em>) </em><em> </em><em>=</em><em> </em><em>-</em><em>4</em>

Step-by-step explanation:

<em>y </em><em>-</em><em> </em><em>y1</em><em> </em><em>=</em><em> </em><em>m </em><em>(</em><em> </em><em>x </em><em>-</em><em> </em><em>x1</em><em>)</em>

<em>y </em><em>+</em><em> </em><em>5</em><em> </em><em>=</em><em> </em><em>-</em><em>4</em><em> </em><em>(</em><em> </em><em>x </em><em>+</em><em> </em><em>2</em><em> </em><em>)</em>

<em>y </em><em>+</em><em> </em><em>5</em><em> </em><em>=</em><em> </em><em>-</em><em>4</em><em>x</em><em> </em><em>-</em><em> </em><em>8</em>

<em>4x </em><em>+</em><em> </em><em>y </em><em>+</em><em>5</em><em> </em><em>+</em><em> </em><em>8</em><em> </em><em>=</em><em> </em><em>0</em>

<em>4x </em><em>+</em><em> </em><em>y </em><em>+</em><em>1</em><em>3</em><em> </em><em>=</em><em> </em><em>0</em><em> </em>

<em>y </em><em>=</em><em> </em><em>-</em><em>4</em><em>x</em><em> </em><em>-</em><em> </em><em>1</em><em>3</em>

<em>which </em><em>is </em><em>the </em><em>required </em><em>equation </em>

4 0
3 years ago
Brianna has 4 pink bracelets. One third of all her bracelets are pink. How many bracelets does brianna have?
aivan3 [116]
Hey there!

Let's first evaluate this problem, and the keyword we need to use. The problem says that out of the total number of bracelets Brianna has, x, 1/3 of them are pink. The reason the word of is so important throughout math is that it signifies multiplication. For example, 1/2 of 10 is 5 because 1/2 times 10 is 5.

Now, to apply that to this situation, we need to create an equation, a mathematical statement that indicated the equilibrium or equality of two values. Since we have 1/3 of all her bracelets, x is four, we can set up our equation. Here's another good keyword- is. Is signifies an equation, because it means "equal to" mathematically. For example, 5 is equal to 20/4.

We have:

1/3(x) = 4 

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We don't want that fraction there. In order to get rid of it and keep the expression equal, we multiply both sides by 3. We have,

x = 12

Hope this helps!
8 0
3 years ago
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