A statistic is a characteristic of a sample while a parameter is usually an unknown population parameter?True

False

Answers

Answer 1

Answer:

This should be Correct-

Answer:

True

Explanation:

A statistic is a characteristic of a sample, a portion of the target population. A parameter is a fixed, unknown numerical value, while the statistic is a known number and a variable which depends on the portion of the population.

Parameter Definition: a quantity or statistical measure that, for a given population, is fixed and that is used as the value of a variable in some general distribution or frequency function to make it descriptive of that.

Population: The mean and variance of a population are population parameters.

Statistic Definiton: A statistic or sample statistic is any quantity computed from values in a sample that is used for a statistical purpose. Statistical purposes include estimating a population parameter, describing a sample, or evaluating a hypothesis. The average of sample values is a statistic.

Answer 2

Answer: The answer is: true

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Use a commutative property to complete the statement 2x + 16
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Solve the inequality. 3x + 7 > 4x + 2 A) x > 5 B) x < 5 C) x > 9 D) x < 9
Solve the inequality of 6(x-7)>-6
The Food and Drug Administration advises people against eating fish with mercury concentrations exceeding 1 part per million (ppm). Researchers wonder if the average mercury content of large-mouth bass in a certain state exceeds the limits and, thus, make such fish inedible. They randomly sample largemouth bass from randomly selected lakes in this state and record the amount of mercury in each fish. What is the correct parameter in this example

Pls hep

Solve the inequality.

Answers

Answer:

y > 9

Step-by-step explanation:

Given inequality:

$-6 > -(2)/(3)y$

To solve the given inequality, we need to isolate y on one side of the equation.

Begin by multiplying both sides of the inequality by 3 to eliminate the fraction on the right side:

$-6 \cdot 3 > -(2)/(3)y\cdot 3$

$-18 > -2y$

Now, divide both sides of the inequality by -8 to isolate y. Remember to reverse the inequality sign, as we are dividing by a negative number.

$(-18)/(-2) > (-2y)/(-2)$

$9 < y$

Therefore, the solution is:

$\Large\boxed{\boxed{y > 9}}$

Random samples of size 17 are taken from a population that has 200 elements, a mean of 36, and a standard deviation of 8. Which of the following best describes the form of the sampling distribution of the sample mean for this situation? a. Approximately normal because the sample size is small relative to the population size b. Approximately normal because of the central limit theorem c. Exactly normal d. None of these alternatives is correct.

Answers

None of the given alternatives described the Sample mean for the situation. A complete solution is below.

Given values are:

Sample size,

n = 17

Mean,

μ = 36

Standard deviation,

σ = 8

As we know,

The Standard deviation of sample mean,

→ $(\sigma)/(√(n) )$

By substituting the values, we get

→ $(8)/(√(17) )$

→ $(8)/(4.13)$

→ $1.94$

Thus the response i.e., "option d" is appropriate.

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Answer:

Step-by-step explanation:

Calculate S37 for the arithmetic sequence in which a7 = 25 and the common difference is d=-1.7

Answers

The value of 37th term of the arithmetic sequence will be;

⇒ - 26

What is Arithmetic sequence?

An arithmetic sequence is the sequence of numbers where each consecutive numbers have same difference.

Given that;

The values are,

⇒ a₇ = 25

And, The common difference is d = -1.7

Now,

Since, The nth term of arithmetic sequence is;

⇒ a(n) = a + (n - 1)d

And, ⇒ a₇ = 25

So, We get;

⇒ a₇ = a + (7 - 1) (- 1.7)

⇒ 25 = a + 6 × - 1.7

⇒ 25 = a - 10.2

⇒ 25 + 10.2 = a

⇒ a = 35.2

So, The 37th term of the arithmetic sequence is;

⇒ a₃₇ = 35.2 + (37 - 1) (- 1.7)

⇒ a₃₇ = 35.2 + 36 × - 1.7

⇒ a₃₇ = 35.2 - 61.2

⇒ a₃₇ = - 26

Thus, The value of 37th term of the arithmetic sequence will be;

⇒ - 26

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Answer:

-26

Step-by-step explanation:

25 is a7. if you subtract 1.7 each time then at 37 the number will be -26.

If 9x+2y^2−3z^2=132 and 9y−2y^2+3z^2=867, then x+y =

Answers

Answer:

$x + y = (1000)/(9)$

Step-by-step explanation:

Step 1: Identify the approach:

With this problem, the general solution is to try manipulate given data and transform data into a new form, in which, the desired value $(x + y)$ is on the left side and all of other components which do not contain $x$ or $y$ are on the right side.

Step 2: Analyze:

$9x + 2y^(2) - 3z^(2) = 132\n9y - 2y^(2) + 3z^(2) = 867$

Realize that in both equations, the $2y^(2)$ and $3z^(2)$ are in form of different signs. Then adding up corresponding sides of both equation can help eliminate these undesired components.