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
d1i1m1o1n [39]
3 years ago
12

Write a ratio to express the number of people who preferred WANR to those who preferred WCLM

Mathematics
2 answers:
pochemuha3 years ago
8 0

Answer:

11:12

Step-by-step explanation:

88 : 96 reduced to 11:12

0.22 x 400 = 88

0.24 x 400 = 96

TEA [102]3 years ago
7 0
88 : 96

0.22 x 400 = 88
0.24 x 400 = 96
You might be interested in
Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points. Rachel scored 78 p
Artemon [7]

Answer:

Keenan's z-score was of 0.61.

Rachel's z-score was of 0.81.

Step-by-step explanation:

Z-score:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points.

This means that X = 80, \mu = 77, \sigma = 4.9

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{80 - 77}{4.9}

Z = 0.61

Keenan's z-score was of 0.61.

Rachel scored 78 points on an exam that had a mean score of 75 points and a standard deviation of 3.7 points.

This means that X = 78, \mu = 75, \sigma = 3.7. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{75 - 78}{3.7}

Z = 0.81

Rachel's z-score was of 0.81.

6 0
2 years ago
The questionnnnnnnnn
CaHeK987 [17]
I’m pretty sure the answer is C
3 0
2 years ago
Read 2 more answers
3x+14=11 <br> a. 4<br> b.-1<br> c. 3
EleoNora [17]
For this question, you would go; 11 - 14 = -3 Then; -3 ÷ 3 = -1 The answer is b) -1 :)
6 0
3 years ago
Help me please these are for my finals. ! :(
Degger [83]

Answer:

negitive

Step-by-step explanation:

good luck on finals

4 0
2 years ago
Let X1, X2 and X3 be three independent random variables that are uniformly distributed between 50 and 100.
sergejj [24]

Answer:

a) the probability that the minimum of the three is between 75 and 90 is 0.00072

b) the probability that the second smallest of the three is between 75 and 90 is 0.396

Step-by-step explanation:

Given that;

fx(x) = { 1/5 ; 50 < x < 100

              0, otherwise}

Fx(x) = { x-50 / 50 ; 50 < x < 100

                          1 ;   x > 100

a)

n = 3

F(1) (x) = nf(x) ( 1-F(x)^n-1

= 3 × 1/50 ( 1 - ((x-50)/50)²

= 3/50 (( 100 - x)/50)²

=3/50³ ( 100 - x)²

Therefore P ( 75 < (x) < 90) =  ⁹⁰∫₇₅ 3/50³ ( 100 - x)² dx

= 3/50³ [ -2 (100 - x ]₇₅⁹⁰

= (3 ( -20 + 50)) / 50₃

= 9 / 12500 = 0.00072

b)

f(k) (x) = nf(x)  ( ⁿ⁻¹_k₋ ₁) ( F(x) )^k-1 ; ( 1 - F(x) )^n-k

Now for n = 3, k = 2

f(2) (x) = 3f(x) × 2 × (x-50 / 50) ( 1 - (x-50 / 50))

= 6 × 1/50 × ( x-50 / 50) ( 100-x / 50)

= 6/50³ ( 150x - x² - 5000 )

therefore

P( 75 < x2 < 90 ) = 6/50³ ⁹⁰∫₇₅ ( 150x - x² - 5000 ) dx

= 99 / 250 = 0.396

3 0
3 years ago
Other questions:
  • 11 minus the product of 5 and a number k
    9·1 answer
  • How is an inversely proportional relationship different from a directly proportional relationship?
    7·1 answer
  • How much power is used if a force of 35 newtons is used to push a box a distance of 20 meters in 5 seconds
    6·1 answer
  • What point is on the graph of f(x)=3x4
    6·1 answer
  • Multiplly<br><br> -1000(-8.769=?<br> 0.3(-16)=?<br><br> PLEASE HELP WITH BOTH, WOULD BE GREAT HELP!!
    14·2 answers
  • The school ski club went on a ski trip. The ski changed the group $1120 for 32 lift tickets. How much was each ticket?​
    9·1 answer
  • HELP i will give brainly
    14·2 answers
  • Would a scatter plot showing the size of a swimming pool and the amount
    11·2 answers
  • Please answer correctly!! I’ll mark as brainliest! <br><br> No links no fake answers
    5·1 answer
  • Please help quick:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!