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
Ivan
2 years ago
6

A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high sch

ool seniors. The study found that the mean SAT score was 516 with a margin of error of 20. Write a confidence interval for the true mean SAT score of the graduating high school seniors.
Mathematics
1 answer:
natali 33 [55]2 years ago
7 0

A confidence interval for the true mean SAT score of the graduating high school seniors will be (496; 536)

<h3>What is a confidence interval?</h3>

A confidence interval (CI) is a range of estimates for an unknown parameter in frequentist statistics.

Mean score ± margin of error

Margin of Error = 20

Mean SAT score = 516

Hence,the confidence interval will be:-

=  516   ±  20

Lower boundary  =  516   -   20  = 496

Upper boundary  =  516   +  20  =  536

To know more about confidence intervals follow

brainly.com/question/16974109

#SPJ1

You might be interested in
The general form of a circle is given as x^2 + y^2 + 4x - 12y + 4 = 0.
stepan [7]
If you can rewrite the formula as (x-a)² + (y-b)² = r², the center is at (a,b) and the radius is r.

If you work out this equation, and map it to the original, you will find that the +4x term hints that a = 2 (double product) and -12y hints that b=-6, and r=6.

So, the formula can be written as (x+2)² + (y-6)² = 6² and the center is at (-2,6) and the radius is 6.
7 0
3 years ago
Find the area of the shape either enter an exact andwet In teems of pi use 3.14 for pi and enter ur ander as a Devimal
NikAS [45]

Answer:

6 units

Step-by-step explanation:

HOPE THIS HELPED

7 0
3 years ago
Expand<br> (2x - 3)4 <br><br> Can you help me expand this by using the binomial theorem?
saw5 [17]

The value of expanding (2x -3)^4 is 16x^4  + 96x^3  +216x^2 -216x + 81

<h3>How to expand the expression?</h3>

The expression is given as:

(2x -3)^4

Using the binomial expansion, we have:

(2x -3)^4 = ^4C_0 * (2x)^4 * (-3)^0 +^4C_1 * (2x)^3 * (-3)^1 + ^4C_2 * (2x)^2 * (-3)^2 + ^4C_3 * (2x)^1 * (-3)^3 + ^4C_4 * (2x)^0 * (-3)^4

Evaluate the combination factors.

So, we have:

(2x -3)^4 = 1 * (2x)^4 * (-3)^0 + 4 * (2x)^3 * (-3)^1 + 6 * (2x)^2 * (-3)^2 + 4 * (2x)^1 * (-3)^3 + 1 * (2x)^0 * (-3)^4

Evaluate the exponents and the products

(2x -3)^4 = 16x^4  + 96x^3  +216x^2 -216x + 81

Hence, the value of expanding (2x -3)^4 is 16x^4  + 96x^3  +216x^2 -216x + 81

Read more about binomial expansions at:

brainly.com/question/13602562

#SPJ1

8 0
2 years ago
1 over 4 plus 1 over 2 plus x = - 3 over 4
blagie [28]

Answer:

5/8

Step-by-step explanation:

6 0
3 years ago
A toy car can go 3 mph. How long would it take to go 10 miles?
alisha [4.7K]
How long does it take to go 3mph ?
3 0
3 years ago
Other questions:
  • Find all solutions of the equation. leave answers in trigonometric form x^3-8=0 2cis
    6·1 answer
  • Hannah divides the wall into 11 equal sections Hannah paints 1 section herself what fraction of the wall does Hannah paint
    12·1 answer
  • ?????????????????????? Help???plzz
    12·1 answer
  • Negative 5 and 3/4 multiplied by 8/23
    6·1 answer
  • A bag contains 8 white, 4 red, 7 green, and 5 blue marbles. Eight marbels are withdrawn randomly. How many withdrawn marbles wer
    5·1 answer
  • Algebraic expression for 15x + 8
    8·1 answer
  • The circumference of a circle is divided into twelve equal arcs. The measure of each arc is
    6·1 answer
  • I need the answers for all of these! Please help
    11·1 answer
  • What is the volume of the composite figure? Use 3.14 for Pi. Round to the nearest hundredth.
    9·1 answer
  • Allan bought a rug shaped as a semicircle that has a radius of 4 yards. What is the circumference of the rug? Plz answer
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!