1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexandra [31]
3 years ago
5

The sampling method where every item in the population has an equal probability of being selected is called:

Mathematics
1 answer:
larisa86 [58]3 years ago
3 0
With 'random sampling' every item in the population has an equal probability of being selected.
You might be interested in
Assume that you have paired values consisting of heights​ (in inches) and weights​ (in lb) from 40 randomly selected men. The li
Over [174]

Answer:

The value of the coefficient of determination is 0.263 or 26.3%.

Step-by-step explanation:

<em>R</em>-squared is a statistical quantity that measures, just how near the values are to the fitted regression line. It is also known as the coefficient of determination.

A high R² value or an R² value approaching 1.0 would indicate a high degree of explanatory power.

The R-squared value is usually taken as “the percentage of dissimilarity in one variable explained by the other variable,” or “the percentage of dissimilarity shared between the two variables.”

The R² value is the square of the correlation coefficient.

The correlation coefficient between heights​ (in inches) and weights​ (in lb) of 40 randomly selected men is:

<em>r</em> = 0.513.

Compute the value of the coefficient of determination as follows:

R^{2}=(r)^{2}\\=(0.513)^{2}\\=0.263169\\\approx0.263

Thus, the value of the coefficient of determination is 0.263 or 26.3%.

This implies that the percentage of variation in the variable height explained by the variable weight is 26.3%.

3 0
3 years ago
Sam has 8 quarters, 5 dimes, and 3 Nicole's in his pocket. If one coin is selected random, what is the probability that it will
Murrr4er [49]
There are a total of 16 coins, so out of the ratio, that 16 goes on the bottom.  Now you have to add up the coins that are NOT quarters and that number goes on the top.  So your ratio is 8/16 or 1/2
6 0
3 years ago
A private plane is traveling due east at a rate of 160 mph. A south wind is blowing 30 mph. What is the actual velocity of the p
photoshop1234 [79]

The resultant velocity of the plane is the sum of the two velocity vectors which are perpendicular to each other. See the attached figure.

The magnitude of the resultant velocity is

\sqrt{160^2+30^2}= \sqrt{26500}=162.79 \;mph.

The approximate value of the actual velocity of the plane is 163 \;mph. Correct choice is (D).

8 0
3 years ago
Pls!!
zhuklara [117]
The answer is 3 yards
5 0
3 years ago
Mr.Scott weekly salary is $37 less than Mr. Khanna's. If Scott weekly salary is $584, what is Khanna's weekly salary?​
ycow [4]

Answer:

Khannas salary is $547

Step-by-step explanation

Literally all you have to do is subtract 584 by 37.

5 0
2 years ago
Read 2 more answers
Other questions:
  • Plz help ill give brainlist
    8·1 answer
  • Sally has a few choices for lunch; a hamburger, hotdog, or BBQ, with french fries, or chips. How many different combinations are
    7·2 answers
  • ((10 POINTS NEED ANSWER))
    10·1 answer
  • the point (3, 6/5) lies ln the graph representing a proportional relationship. Which of the following points also lie on the sam
    7·2 answers
  • The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t
    13·2 answers
  • An accountant gets paid $150 for each tax return she prepares, and her goal is to earn $6750 preparing tax returns during this t
    14·2 answers
  • HELLLPPP ME Y'ALL!!!!!!!!!!!?&gt;&lt;&lt;
    6·1 answer
  • A farmer's land is separated into sections of size 2 1/5 acres. Suppose there are 2 2/9 such sections. How many acres of land do
    14·1 answer
  • Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
    9·1 answer
  • The hypotenuse of a 30-60-90 triangle is 12. Find the shortest side length and the middle side length.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!