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rjkz [21]
2 years ago
9

What will increasing the size of a probability sample do? decrease the level of confidence increase the variability of a sample

statistic increase the variability in a population parameter decrease the variability of a sample statistic decrease the variability in a population parameter
Mathematics
1 answer:
sladkih [1.3K]2 years ago
5 0

Answer:

Decreases the variability of a sample

Step-by-step explanation:

Given that the items are unrelated random variables, we have that the total of the variances of variates is the variance of their sum, that is the variance of the mean of a distribution is the variance of a sample in the distribution divided by the square root of the number of subjects in the sample (the sample size)

Therefore, we have;

\sigma_{\overline x} = \dfrac{\sigma }{\sqrt{n} }

Therefore, increasing the size of a probability sample, decreases the variability of a sample and increases precision and level of confidence

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Reflection and dilation is the transformation which will occur to map triangle ABC triangle to A^ * B^ n C^ prime.

<h3>What is a Triangle?</h3>

This refers to a plane figure which has features such as three angles and three sides.

Reflection and dilation involves flipping and enlargement/reduction respectively which gives rise to the sides being changed.

Read more about Triangle here brainly.com/question/1058720

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3 0
2 years ago
what is an equation of the line that s perpendicullar to y-3=-4(x+2) and passes through the point (-5,7)
Sidana [21]

Answer:

4y=x+33

y=x/4+33/4 (slope-intercept form)

Step-by-step explanation:

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y= -4x-8+3

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For perpendicularity

m2= -1/-4 = 1/4

The equation is

y-y1 = m2(x-x1)

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y-7 = x/4+5/4

Multiply through by 4

4y-28=x+5

4y=x+5+28

4y=x+33

Divide through by 4

y=x/4+33/4 (slope-intercept form)

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3 years ago
Lucia is putting cookies into bags. She has 35 cookies. She wants to put 3 cookies in each bag. She divides to find out how many
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Answer:

I think D.

Step-by-step explanation:

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