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KATRIN_1 [288]
3 years ago
13

When taking a sample from a population, which of the following is true?

Mathematics
1 answer:
salantis [7]3 years ago
7 0

Answer:

The larger the number of items in the sample, the more closely the distribution of sample items will follow a bell-shaped curve

Step-by-step explanation:

The question is about the distribution of the sample

The sampling distribution, also called the distribution of the sample mean is the distribution for many samples drawn form population at random for large sizes.

As per central limit theorem, if samples of sufficiently large size to represent the population is drawn from the population, the sample means of all sample will follow a normal distribution and hence bell shaped.

So from the options we say a is incorrect because not always

b is incorrect because there is no mention about the chance.

c is incorrect because when we use sample variance we use t test

Option d is correct.

The larger the number of items in the sample, the more closely the distribution of sample items will follow a bell-shaped curve

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clark wants to figure out how many pens to order for the office. there are 36 workers, and he need to order one pen for each wor
yuradex [85]

8 like red 4 like blue

8+4 = 12

36/12=3

4*3 = 12 blue pens

8 0
3 years ago
Write each product in standard form. (y+ 9)(y+ 9)
Alla [95]

Answer:

y² + 18y + 81

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients
  • Expand by FOIL (First Outside Inside Last)

Step-by-step explanation:

<u>Step 1: Define</u>

(y + 9)(y + 9)

<u>Step 2: Expand</u>

  1. FOIL:                                        y² + 9y + 9y + 81
  2. Combine like terms:               y² + 18y + 81
3 0
2 years ago
Show problem set up for full credit.
ICE Princess25 [194]

Answer:

∠ QPR = 125°

Step-by-step explanation:

the angles subtended by 2 congruent arcs are congruent , that is

5x = 4x + 25 ( subtract 4x from both sides )

x = 25

Then

∠ QPR = 4x + 25 = 4(25) + 25 = 100 + 25 = 125°

5 0
2 years ago
Find the minimum or maximum value of the function g(x)=−3x2−6x+5
polet [3.4K]

Step-by-step explanation:

g(x) = ax²+bx+c

g(x)=−3x²−6x+5

a = -3, b= -6, c = 5

since a <0 , the function has only maximum value.

=> g'(x) = 0

-6x -6 = 0

-6x = 6

x = -1

the maximum value => g(-1) =

-3(-1)²-6(-1)+5 = -3+6+5 = 9

the domain : {x | x € Real numbers}

the range : {y| y ≤ 9, y € Real numbers}

the function is increasing for x < -1

the function is decreasing for x > -1

4 0
3 years ago
(9x^(2)+4x+2)-:(3x+x-2)
earnstyle [38]

Answer:

= - 9x2+4x+2/4x-2

Step-by-step explanation:

Remove parentheses

its blank we need to find a number

step 1: = -/4x-2 (9x2+4x+2)

step 2: multiply fractions and there is your answer

9x2+4x+2/4x-2

6 0
2 years ago
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