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xeze [42]
3 years ago
8

The Trial Urban District Assessment (TUDA) is a government-sponsored study of student achievement in large urban school district

s. TUDA gives a mathematics test scored from 0 to 500. A score of 262 is a "basic" mathematics level and a score of 299 is "proficient." Scores for a random sample of 1 100 eighth-gr ders in Dallas had 271 with standard error 1.3.
(a) We don't have the 1100 individual scores, but use of the t procedures is surely safe. Why? O
A. Because the sample size is very large.
B. Because the sample doesn't have outliers.
C. Because the data haya strong skew.
D. Because use of the t procedures is always safe.
Mathematics
1 answer:
Bas_tet [7]3 years ago
4 0

Answer:

A. Because the sample size is very large.

Step-by-step explanation:

The sample is quite large, so the t test is safe. With a sample size of at least 100, this test is going to be safe.

So the correct answer is:

A. Because the sample size is very large.

You might be interested in
Missing some of the data points in the sample is a:
zepelin [54]

Answer:

Measurement error.

Step-by-step explanation:

Measurement Error are the error when there is difference found in true value of data and measured quantity of data. This difference could be found if we are missing some data in the sample.

The error could be reduced by carefully designing the process of data collection and it´s measurement.

Measurement error are classified into two type of error:

  1. Random error.
  2. Systematic error.

3 0
2 years ago
It’s x+8 at the bottom but if you solve this please give me a step by step so I know how to solve it, thank you!!♥️
OLga [1]

Answer:

x=4.

Step-by-step explanation:

Let's solve your equation step-by-step.

5/15=x/ x+8

Step 1: Cross-multiply.

5/15=x/ x+8

5*(x+8)=x*(15)

5x+40=15x

Step 2: Subtract 15x from both sides.

5x+40−15x=15x−15x

−10x+40=0

Step 3: Subtract 40 from both sides.

−10x+40−40=0−40

−10x=−40

Step 4: Divide both sides by -10.

−10x−10=−40−10

Then your answer will be x=4.

6 0
3 years ago
Find the total surface area for the hexagonal prism?
Mnenie [13.5K]

Answer:

572.5

Step-by-step explanation:

A=6ah + 3√(3) a²= 6·8·5+3√(3)·8²≈572.55376

a is base length and h is height

5 0
3 years ago
The line passing through which two points is parallel to the line x - 2y = 16?
Naddika [18.5K]

Answer:

E) -4,7 and -2,8

Step-by-step explanation:

parallel lines have same slope

x - 2y = 16

y = 1/2 x -8     slope: 1/2

E. slope = Δy / Δx = (8-7) / (-2 - -4) = 1/2

5 0
2 years ago
What is the apparent solution to the system of equations?
Alexus [3.1K]
X = 3
y = -3

You will see this using any graphing tool at your disposal. 
7 0
3 years ago
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