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
Harrizon [31]
2 years ago
8

Twenty five high school students complete a preparation program for taking the SAT test. Here are the SAT scores from the 25 stu

dents who completed the SAT prep program:
434 694 457 534 720 400 484 478 610 641 425 636 454


514 563 370 499 640 501 625 612 471 598 509 531


The mean of these scores is 536.00. We know that the population average for SAT scores is 500 with a standard deviation of 100.


The question is, are these students’ SAT scores significantly greater than a population mean of 500 with a population standard deviation of 100 ?


Note that the the maker of the SAT prep program claims that it will increase (and not decrease) your SAT score. So, you would be justified in conducting a one-directional test. (alpha = .05).
Mathematics
1 answer:
san4es73 [151]2 years ago
6 0

the answer to the question is b

You might be interested in
Please helo with thos question pleas
natta225 [31]
The sum of the opposite interior angles is equal to the exterior angle.

So,

∠CAB + ∠ACB = ∠CBD

x + 40 + 3x + 10 = 6x

4x + 50 = 6x

2x = 50

x = 25°

∠CAB = x + 40 = 25 + 40 = 65°

Hence, the answer is D.


4 0
3 years ago
Change the following into mixed fraction 13/5​
Oduvanchick [21]

Answer:

2 3/5

Step-by-step explanation:

13/5​

5 goes into 13 2 time

2*5 =10

13-10 =3

There is 3 left over.  This goes over the denominator

2 3/5

7 0
3 years ago
Read 2 more answers
What is 7/12 in simplest form?
ikadub [295]
If it stays as fraction the answer would be 7/14
8 0
3 years ago
Read 2 more answers
What does the E in an electrode code stands for?​
dalvyx [7]

Answer:

The “E” indicates an arc welding electrode. The first two digits of a 4-digit number and the first three digits of a 5-digit number stand for tensile strength.  So, “1” stands for an all position electrode, “2” for a flat and horizontal electrode, and “4” for a flat, horizontal, vertical down and overhead electrode

3 0
3 years ago
Read 2 more answers
Please help in geometry
nekit [7.7K]
90 degrees

the diagonals intersect at right angles
4 0
3 years ago
Read 2 more answers
Other questions:
  • 3) 25 students were surveyed at Salisbury Middle School about what activities they
    7·1 answer
  • What is 1995298 rounded to the nearest 10000
    11·2 answers
  • A rectangular prism has a volumen of 96ft. the area of the bas is 24ft what is height of the prism?
    10·1 answer
  • Sam cut a pie into equal slices. There are only 3 slices left. The angle measure of the 3 slices is 72 degrees How many slices d
    11·1 answer
  • Which graph correctly represents (5/2)x - y < 3?
    14·2 answers
  • Write an equivalent expression to show the relationship of multiplication and addition.
    10·1 answer
  • PLZPLZPLZ HELP ME!!!
    10·1 answer
  • Which of these tables represents a linear function?
    9·2 answers
  • Power of powers property with and without variable 
    11·1 answer
  • What is the least common denominator of 1/3 and 4/7?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!