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Marizza181 [45]
3 years ago
12

Paulina is going to give away some

Mathematics
1 answer:
ladessa [460]3 years ago
6 0
The answer to this would be D
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Distribution with a mean of 100 and standard deviation of 15...
anzhelika [568]
Use the z-score:
                                      112 - 100
For 112, the z-score is --------------- = 12/15, or 0.8.  
                                             15

Next, find the AREA under the standard normal curve TO THE LEFT OF 0.8.

Use either a z-score table or a calculator for this purpose.

Using my calculator, I found that this area is 0.532.  That places 112 in the 53rd percentile.

82 would be in a lower percentile:  the 12th percentile.

Let me know if you have questions about how to use a calculator to do these calculations.

8 0
4 years ago
Which two points on the number line represent numbers that can be combined to make zero?
quester [9]

Answer:

B  \: and \:  D

4 0
3 years ago
Read 2 more answers
You deposit $200 every quarter for 12 years into a sinking fund that pays 2.25% interest compounded annually. What is the future
anzhelika [568]

Answer:

$16,974.57

Step-by-step explanation:

The formula for future value  is given by

FV=PMT\frac{(1+i)^{n}-1}{i}

where

FV = future value

PMT = amount deposited each period and is given as 200

i = rate per period = r/m where r is the interest rate and m the frequency of compounding. Here it is mentioned that r = 2.25% and interest is compounded annually ie once per year so m = 1

i = 2.25%/1 = 2.25% = 2.25/100 = 0.0225

The number of payments n = 48 since we make quarterly payments (4 per year) and we are asked to compute for 12 years

Plugging these values into the formula gives

FV=200\frac{(1+0.0225)^{48}-1}{0.0225}

which evaluates to

$16,974.57 which can be rounded up to $16975

depending on the accuracy you desire

6 0
1 year ago
Find the standard deviation of the words per page. 10 15 8 16 14 12 9 12 14 10
Vanyuwa [196]

Answer:

Standard deviation =  2.569

Step-by-step explanation:

The mean = (10 + 15 + 8 + 16 + 14 + 12 + 9 + 12 + 14 + 10) ÷ 10 = 12

x - mean = -2 , 3 , -4 , 4 , 2 , 0 , -3 , 0 , 2 , -2

(x - mean)² = 4 , 9 , 16 , 16 , 4 , 0 , 9 , 0 , 4 , 4

Σ(x - mean)² = 4 + 9 + 16 + 16 + 4 + 0 + 9 + 0 + 4 + 4 = 66

Standard deviation = √(66/10) = 2.569

3 0
3 years ago
Read 2 more answers
PLEASE HURRY!! APPROXIMATE THE VALUE AND CHOOSE CORRECT STATEMENT
densk [106]

The correct statements among given statements are statement C and E.

What is a rational number ?

If p & q are any two numbers where q is not equal to 0, then the fraction in form p/q is called as rational number.

A number is given which is √22.

√22 = 4.69041576

Let's check which of the statements are correct.

A.

√22 is not rational number as the number has non - terminating decimal value which is 4.69041576 and it doesn't lies between 10 and 12. So , this option is not correct.

B.

This option is also not correct as the value of √22 nearly equals 4.69 is and not greater than 4.691.

C.

The value of √22 is 4.69041576.

If we round off to the nearest hundredth , 9 is at the hundredth place , so the value will be 4.69. This is a correct option.

D.

√22 is not a rational number as the number has non - terminating decimal value which is 4.69041576 but it lies between 4 and 5. So , this option is not correct.

E.

The value of √22 is 4.69041576. We can observe that the decimal number doesn't repeat. So , this is a correct option.

F.

As we know √22 is not a rational number we can't represent it as fraction. This option is not correct.

Therefore , the correct statements among given statements are statement C and E.

Learn more about rational number here :

brainly.com/question/1387049

#SPJ1

3 0
1 year ago
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