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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.

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Super easy to get pointsss!!! HELPPPP
jeyben [28]

Answer:

3x3x12= volume of large prism= 108

1x1x12= volume of hole= 12

(Volume of prism)-(volume of hole)= 96

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
What is the length of the diagonal of a 10 foot by 8 foot rectangle?
zloy xaker [14]
Diagonal of a rectangle formula:

Diagonal = √l² + w²
Diagonal = √10² + 8²
Diagonal = √100 + 64
Diagonal = √164
Diagonal = 12.806 feet.

Or you can use the pythagorean theorem. The diagonal of a rectangle is the hypotenuse of a triangle.

a² + b² = c² ; where a and b represents the lengths of the triangle and c is the hypothenuse. In this case, the lengths are 10 ft and 8ft.

10² + 8² = 100 + 64 = 164 ; This represents c².
c = √c² = √164 = 12.806 ft
6 0
3 years ago
Solve for the exact value of x.
forsale [732]
A² + b² = c²
5² + 8² = x²
x² = 25 + 64
x² = 89
x = √89
x = 9.43
3 0
3 years ago
Read 2 more answers
Write an expression to represent three minus the product of two and a number x
Rainbow [258]

<em>3 minus ___</em> ⇒ 3 - ___

<em>the product of 2 and a number x</em> ⇒ 2x

"3 minus the product of 2 and a number x" ⇒ 3 - 2x

_____

Each part of the description has a translation.

7 0
3 years ago
Find the measure of one exterior angle for the following regular polygon.
JulsSmile [24]

Answer:

72º

Step-by-step explanation:

<em>Hey there!</em>

Well the interior of a pentagon's angle is 108º,

so we do,

180 - 108 = 72º

<em>Hope this helps :)</em>

8 0
3 years ago
Read 2 more answers
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