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mario62 [17]
3 years ago
9

Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 14. Using the empirical ru

le, what percentage of IQ scores are between 58 and 142?
Mathematics
1 answer:
Brut [27]3 years ago
3 0

Answer:

99.7%

Step-by-step explanation:

Bell shaped curve by empirical rule is that if the standard deviation from the mean (left to right) is 1 deviation then about 68% of the data is in that range if it’s 2 standard deviations away then it’s 95% and 3 deviations away is 99.7%

142-100=42=3(14)

100-58=42=3(14)

Therefore the data is three standard deviations from the mean and this there is 99.7% of the data in this range.

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Enter the appropriate value to answer the question or solve the problem.
Licemer1 [7]

Answer:

slope 2.500

x intercept 1.80000

m intercept 4.50000

Step-by-step explanation:

<u>step 1:</u>

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                     5*(x+4)-(-2*(-4-m)+3)=0 

<u>step</u><u> </u><u>2</u><u>:</u>

   -4 - m  =   -1 • (m + 4) 

(5•(x+4))-((0--2•(m+4))+3) = 0

<em>step</em><em> </em><em>3</em><em>:</em>

5 • (x + 4) - (2m + 11) = 0

<u>step</u><u> </u><u>4</u><u>:</u>

5x - 2m + 9 = 0

<u>step</u><u> </u><u>5</u><u>:</u>

 Solve   5x-2m+9  = 0

3 0
3 years ago
15. Sensei's Judo Club has a competition for
marta [7]

Answer:

6 grapples

Step-by-step explanation:

x = number of wins

y = number of ties

y = 15 - x

48 = 5x + 2y

48 = 5x + 2(15 - x)

48 = 5x + 30 - 2x

48 = 3x + 30

18 = 3x

x = 6

3 0
3 years ago
1. Bailey made 5 - cups of applesauce. He
madam [21]

Answer:

2 cups

Step-by-step explanation:

6 0
3 years ago
Identify the graph of the equation. What is the angle of rotation for the equation?<br><br>xy=-2.5
Maurinko [17]

Answer:

It is B. hyperbola, 45 degrees.

SteIt is p-by-step explanation:

If we rotate the standard form  x^2 - y^2 = 1 through 45 degrees we get xy = 1/2.

xy = -2.5 comes from x^2 - y^2 = -5  being rotated 45 degrees.

3 0
3 years ago
Read 2 more answers
The width of a rectangle is 1 3/4 feet. The rectangle is 2 1/2 feet longer than it is wide. What is the length of the rectangle?
sp2606 [1]

Answer:

length=4 1/4

Step-by-step explanation:

  1. 1 3/4 + 2 1/2
  2. convert 2 1/2 into 2/4 since 2 is half of 4
  3. add the converted number and 1 3/4 fractions
  4. 2/4 and 3/4 added will make 1 1/4
  5. add 1 1/4, 2 and 1 and it will equal 4 1/4
7 0
3 years ago
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