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
Neporo4naja [7]
3 years ago
6

If observed frequencies are 5,10,15 and expected frequencies are each equal to 10 then chi square value is

Mathematics
1 answer:
lina2011 [118]3 years ago
5 0

Answer:

5

Step-by-step explanation:

Given :

Observed values = 5, 10, 15

Expected freqencies = 10

χ² = Σ(observed - Expected)² / Expected

χ² = (5-10)²/10 + (10-10)²/10 + (15-10)²/10

χ² = 25/10 + 0/10 + 25/10

χ² = 2.5 + 0 + 2.5

χ² = 5

You might be interested in
The sum of two consecutive odd integers equals 12. What are they?
svetoff [14.1K]

Answer:

x = 5

The two consecutive odd integers are: 5, 7

And...checking

sum = 12

Step-by-step explanation:

8 0
3 years ago
What is 26/15 as a whole number?
Contact [7]

Answer:

1 11/15

Step-by-step explanation:

4 0
2 years ago
Its all one big question
Nostrana [21]
1)5 2)6 3)17 because h(x)+k(x)=3x-1
6 0
3 years ago
Read 2 more answers
At a bake sale, as student spent $11.00 buying 3 brownies and 5 cookies. His friend spent $3.95 buying 1 brownie and 2 cookies.
dybincka [34]

Answer:

$2.25

Step-by-step explanation:

Let "b" be the price of 1 brownie and "c" the price of 1 cookie.

At a bake sale, a student spent $11.00 buying 3 brownies and 5 cookies. Symbolicaly,

3 b + 5 c = 11.00   [1]

His friend spent $3.95 buying 1 brownie and 2 cookies. Symbolicaly,

1 b + 2 c = 3.95

b = 3.95 - 2c   [2]

If we replace [2] in [1], we get

3 (3.95 - 2c) + 5 c = 11.00

11.85 - 6c + 5c = 11.00

c = 0.85

If we replace c = 0.85 in [2], we get

b = 3.95 - 2 (0.85) = 2.25

8 0
3 years ago
Help ASAP will give brainly 9th grade math
KatRina [158]
<h2>Answer: </h2><h2>14. 2z + 3yz - 6z +2yz + y - z - 4y 2z - 6z  -4z - z -5z + 3yz + 2yz + y - 4y  3yz + 2yz -5z + 5yz + y - 4y </h2><h2>Answer = -5z + 5yz - 3y  </h2><h2 /><h2>15. -4ab + 3ax + ba - 6xa -4ab + ba Answer = -5ab - 3xa  </h2><h2 /><h2>16. -c(3b - 7a) -3bc - 7ac   Step-by-step explanation: </h2><h2>Hopes this helps. Mark as brainlest plz!</h2>
8 0
3 years ago
Other questions:
  • A plant has a height of 8 1/4 inches what is the height of the plant after it grows 1 7/8 inches?
    5·2 answers
  • If x is 6, then 7x=<br> A. 13<br> B. 42<br> C. 42x<br> D. 76
    7·2 answers
  • During a day a student spends 7 hours sleeping, ¹/4 of the day studying and of the time travelling. What fraction of the day is
    13·1 answer
  • Help please I have to Asher as I did because it's the A
    13·1 answer
  • 100 POINT REWARD!! PLS HELP ASAP!!
    10·2 answers
  • 11 + 4x = 16 + 3x what is the value of x
    10·2 answers
  • Shelly pays $22.75 for 3.5 yards of fabric. What is the price per yard of fabric?
    15·2 answers
  • X + 2y -3z = 11<br> 2x + y -2z =9<br> 4x + 3y + z =16
    7·1 answer
  • What number between 121 and 149 is exactly divisible by both 3 and 5
    12·2 answers
  • Water is building up in a bathtub, After 3 minutes there are 12 gallons of water and after 5
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!