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
bogdanovich [222]
3 years ago
13

Free Points!!! (25pts)

Mathematics
2 answers:
IgorC [24]3 years ago
8 0

2-1=1

1x275=275

275+1=276

276/2=138



Mrrafil [7]3 years ago
6 0

Wait what about me?

2 - 1 = 1.

1 x 275 = 275.

1 + 275 = 276.

Half of 276 is 138.

276 - 138 = 138.

You have 138 fish in your new, clean tank. Have fun with your new pets! :D

You might be interested in
What is the value of y?
Sati [7]
I need more information for this, the y-axis!
4 0
3 years ago
Read 2 more answers
In a recent year, Washington State public school students taking a mathematics assessment test had a mean score of 276.1 and a s
Oksi-84 [34.3K]

Answer:

a) \mu_{\bar x} =\mu = 276.1

\sigma_{\bar x} =\frac{\sigma}{\sqrt{n}}=\frac{34.4}{\sqrt{64}}=4.3

b) From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu=276.1, \frac{\sigma}{\sqrt{n}}=4.3)

c) P(\bar X \geq 285)=P(Z\geq \frac{285-276.1}{4.3}=2.070)

P(Z\geq2.070)=1-P(Z

Step-by-step explanation:

Let X the random variable the represent the scores for the test analyzed. We know that:

\mu=E(X) = 276.1 , \sigma=Sd(X) = 34.4

And we select a sample size of 64.

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Part a

For this case the mean and standard error for the sample mean would be given by:

\mu_{\bar x} =\mu = 276.1

\sigma_{\bar x} =\frac{\sigma}{\sqrt{n}}=\frac{34.4}{\sqrt{64}}=4.3

Part b

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu=276.1, \frac{\sigma}{\sqrt{n}}=4.3)

Part c

For this case we want this probability:

P(\bar X \geq 285)

And we can use the z score defined as:

z=\frac{\bar x -\mu}{\sigma_{\bar x}}

And using this we got:

P(\bar X \geq 285)=P(Z\geq \frac{285-276.1}{4.3}=2.070)

And using a calculator, excel or the normal standard table we have that:

P(Z\geq2.070)=1-P(Z

8 0
3 years ago
Out of 284 high school students surveyed, how many favored football?
Lynna [10]
Is there a picture to go with it?
5 0
2 years ago
Which of the following is a common denominator of 1/4 and 5/6? Answers:
kondaur [170]

Answer:

C, 12

Step-by-step explanation:

least common multiple of 4 and 6 is:

prime factorization of 4: 2*2

prime factorization of 6: 3*2

common factors: 2, so you should only multiply one of the common 2s when multiplying the factors to get the least common multiple

2*2*3=12

12 is a common denominator of 1/4 and 5/6

5 0
2 years ago
How do I solve this?
Oliga [24]
×=4 since you divide 3 and 12 by 3
So it would be 13-16 (4×4)
Your answer is -3
4 0
2 years ago
Other questions:
  • Mark wants a new car that costs $30,000. He only has $500 in his savings account and $300 in his checking account. Which financi
    10·2 answers
  • HELPPPP!!!!Tamara has a cell phone plan that charges $0.07 per min. With a monthly fee of $19. She budgets $29.50 per month for
    11·2 answers
  • The temperature changed from 7°F at 6 p.M to -5°F at midnight. What was the difference between the high and low temperatures? Wh
    11·1 answer
  • a rectangular parking lot has an area of 7/10 square kilometer the width is 1/3 kilometer what is the length of the parking lot
    7·1 answer
  • 30,14,25,,13,33,14 the missing value is?
    12·1 answer
  • Write a multiplication equation and a division equation that can be used to answer how many 3/4's are in 2
    13·1 answer
  • 6
    10·2 answers
  • I am a solution . My number cubed is equal to - 64 . What number am I?
    14·1 answer
  • Someone help me Asap please!!
    10·2 answers
  • Proof Pythagorean identities:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!