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3 years ago

The most important condition for sound conclusions from statistical inference is usually

Mathematics

1 answer:

gregori [183]3 years ago

4 0

Answer:

that the data can be thought of as a random sample from the population of interest.

Step-by-step explanation:

Sound conclusions can be drawn from a population that is not a Normal distribution.

Outliers can affect some measures of a population; however, not all of them are greatly affected.

However if a sample cannot be thought of as a random sample, we cannot make sound conclusions. This is because if the sample is not random, then there could potentially be bias in the results.

You might be interested in

Increase 90 in the ratio 5 is to 3

cupoosta [38]

9514 1404 393

Answer:

150

Step-by-step explanation:

The increase is by the factor 5/3, so the increased number is ...

90×(5/3) = 150

90 increased in the ratio 5 : 3 is 150.

5 0

3 years ago

The result of which expression will best estimate the actual product

prisoha [69]

Answer:

The answer is,

$(-1) \times \frac {1}{2} \times (-1) \times (1)$

Step-by-step explanation:

The given product is,

$\frac {-4}{5} \times \frac{3}{5} \times \frac{-6}{7} \times \frac {5}{6}$

= $\frac {12}{35}$

$\simeq 0.3429$ ---------------------(1)

Now, the first product to compare is,

$(-1) \times \frac {1}{4} \times (-1) \times (-1)$

= - 0.25 ----------------------------(2)

The second product to compare is,

$(-1) \times \frac {1}{2} \times (-1) \times (1)$

= 0.5 ------------------------(3)

The 3rd product to compare is,

$\frac {-4}{2} \times \frac {3}{2} \times \frac{-2}{5} \times \frac {5}{2}$

= 3 ----------------------------(4)

The 4th product to compare is,

$\frac {-3}{4} \times \frac {-3}{4} \times \frac {-1}{5} \times \frac {1}{2}$

= $\frac {-9}{160}$

= 0.05625 -----------------(5)

Comparing all the values , we get (3) is closest to (1).

Hence, we get, the answer is,

$(-1) \times \frac {1}{2} \times (-1) \times (1)$

3 0

3 years ago

An exponential function is graphed for all real numbers. This includes which of the following sets of numbers?

anygoal [31]

In addition to linear, quadratic, rational, and radical functions, there are exponential functions. Exponential functions have the form f(x) = bx, where b > 0 and b ≠ 1. Just as in any exponential expression, b is called the base and x is called the exponent.

An example of an exponential function is the growth of bacteria. Some bacteria double every hour. If you start with 1 bacterium and it doubles every hour, you will have 2x bacteria after x hours. This can be written as f(x) = 2x.

Before you start, f(0) = 20 = 1

After 1 hour f(1) = 21 = 2

In 2 hours f(2) = 22 = 4

In 3 hours f(3) = 23 = 8

and so on.

With the definition f(x) = bx and the restrictions that b > 0 and that b ≠ 1, the domain of an exponential function is the set of all real numbers. The range is the set of all positive real numbers. The following graph shows f(x) = 2x.

8 0

3 years ago

In the following equation, f(x)=2x +7, what is f(-3)?

Helen [10]

Answer:

f(-3) = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 2x + 7

f(-3) is x = -3

Step 2: Evaluate

Substitute: f(-3) = 2(-3) + 7
Multiply: f(-3) = -6 + 7
Add: f(-3) = 1

5 0

3 years ago

Y=2x[<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20" id="TexFormula1" title="x^{2} " alt="x^{2} " align="absmiddle" class="lat

boyakko [2]

X=4 because if y=2 then u muiptly it by 2

7 0

3 years ago