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
dimaraw [331]
3 years ago
10

Is -2.22 a rational or real or integers

Mathematics
2 answers:
Sholpan [36]3 years ago
8 0

Answer:

Integers and rational are the same thing. -2.22 is integer/rational.

It is NOT a real number because a real number is a value of a continuous quantity that can represent a distance along a line and that has nothing to do with -2.22.

mezya [45]3 years ago
3 0
All because -2.22 is a real number, it’s a rational number because it can stop and a integer because it’s negative
You might be interested in
The heights of a random sample of 50 college students showed a mean of 174.5 centimeters and a standard deviation of 6.9 centime
Minchanka [31]

Answer:

Step-by-step explanation:

Hello!

For me, the first step to any statistics exercise is to determine what is the variable of interest and it's distribution.

In this example the variable is:

X: height of a college student. (cm)

There is no information about the variable distribution. To estimate the population mean you need a variable with at least a normal distribution since the mean is a parameter of it.

The option you have is to apply the Central Limit Theorem.

The central limit theorem states that if you have a population with probability function f(X;μ,δ²) from which a random sample of size n is selected. Then the distribution of the sample mean tends to the normal distribution with mean μ and variance δ²/n when the sample size tends to infinity.

As a rule, a sample of size greater than or equal to 30 is considered sufficient to apply the theorem and use the approximation.

The sample size in this exercise is n=50 so we can apply the theorem and approximate the distribution of the sample mean to normal:

X[bar]~~N(μ;σ2/n)

Thanks to this approximation you can use an approximation of the standard normal to calculate the confidence interval:

98% CI

1 - α: 0.98

⇒α: 0.02

α/2: 0.01

Z_{1-\alpha /2}= Z_{1-0.01}= Z_{0.99} =2.334

X[bar] ± Z_{1-\alpha /2} * \frac{S}{\sqrt{n} }

174.5 ± 2.334* \frac{6.9}{\sqrt{50} }

[172.22; 176.78]

With a confidence level of 98%, you'd expect that the true average height of college students will be contained in the interval [172.22; 176.78].

I hope it helps!

4 0
3 years ago
I need help on this:(
Alex Ar [27]

Answer:

Not to sure if this is correct but I think it is 6: 1 : 18

pls msg me if you need explanation

3 0
3 years ago
What do you think Thomas Edison meant by the word perspiration? How do those words apply to what you've learned about businesses
EastWind [94]

1. Thomas Edison used "perspiration" to refer to the physical and mental efforts needed to achieve a meaningful purpose in any human endeavor.

2. As it applies to businesses, it is not enough to develop a business idea or plan, as the business person must be prepared to execute and carry the business idea or plan to fruition.

<h3>What does Thomas Edison's reference mean?</h3>

According to Thomas Edison, the superior intellect or creativity we associate with great minds comes from inspiration (the idea) and perspiration (hard work).

Perspiration literarily refers to the sweat that emanates as someone works hard.

Without a strong working ethic, it will be impossible to achieve great results from only the proposition of great ideas or business plans.

Learn more about Thomas Edison at brainly.com/question/26568016

5 0
2 years ago
Pablo will take the 11:43 AM train to San Diego. The train is estimated to arrive in San Diego in 3 hours 45 minutes. What is th
11Alexandr11 [23.1K]

Answer:

3. 28pm

Step-by-step explanation:

11  43

+3 45

15 28

15.28-12

=3.28

5 0
2 years ago
Haley's car gets at least 18 miles per gallon. If she plans a trip that is 200 miles, what is the minimum number of gallons she'
mote1985 [20]
Needed gallons for 18 miles = 1
Needed gallons for 200 miles = (1/18)*200
                                                = 11.11 gallons
6 0
3 years ago
Read 2 more answers
Other questions:
  • To solve the system of linear equations and by using the linear combination method, Henry decided that he should first multiply
    10·2 answers
  • What is the product of z1 and z2 if
    15·1 answer
  • Please hurry<br><br> What is the surface area of the cylinder? Express the answer in terms of pi.
    12·2 answers
  • Zac spends 30% of his monthly income on rent. If he pays $810 for rent each month, what is his
    11·1 answer
  • Consider the cartesian equation of a circle, y=-2+- sqrt 36-(x-1)^2 , verses the parametric equations of the same circle: x=1+6
    15·1 answer
  • Fill in the table of values so that this is a proportional relationship with k=3/2 X. Y. *blank*. 0 2. *blank*. *blank*. 6. -2.
    10·1 answer
  • *EXTRA PTS* answer #2 - #5
    13·1 answer
  • Which is the only center point that lies on the edge of a triangle?
    14·2 answers
  • Tyler read 15 pages of a book. Ann read 9 pages of the same book. Did Tyler read 4 more pages than Ann? Explain
    7·1 answer
  • Please help me, 65 points to someone who can help me.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!