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STALIN [3.7K]
3 years ago
10

About what percentage of the data lies within 2 standard deviations of the mean in a normal distribution?

Mathematics
1 answer:
Svetach [21]3 years ago
7 0
We should do the whole math calculation, but for ease, we know that the percentage contained within 2 std deviations of a normal distribution is:
= 2(13.6) + 2(34.1)
= 95.4%
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Martin deposits $200 in a savings account that earns 5% annual interest. Four years later, Cary deposits
lesantik [10]

Answer:

200 + (10 y)

Step-by-step explanation:

martin   200 * 5 and divide by 100 =10 per year interest   240 =M

cary 200 + 10=210 =C

200 + (10 y)

4 0
4 years ago
Read 2 more answers
Henry has two pixie sticks full of delicious sugar. Henry
Sholpan [36]

Answer:

14.67 gram

Step-by-step explanation:

Henry has two pixie sticks full of delicious sugar.

Now, each pixie stick contains 22 grams of sugary goodness, then in two sticks, there will be (22 × 2) = 44 grams of sugar.

Now, Henry shares two pixie sticks among two friends and himself in equal proportion.  

Therefore, each of his friends will get \frac{44}{3} = 14.67 (Round to the nearest tenth) gram of sugary goodness. (Answer)

6 0
3 years ago
Problem-solving Practice
kotykmax [81]
First, what's 3 to the power of 8?
Then what's 3 to the power of 10

Now subtract them by each other for your answer
6 0
3 years ago
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Jason just got tired for a new job and will make $80,000 in his first year. Jason was
Andreyy89

Answer:

$110,080

Step-by-step explanation:

This is an arithmetic sequence because each new term is obtained by adding $5000 to the preivous term.

The general formula for such an arithmetic series is

a(n) = $80,000 + ($5,000)(n - 1)

and so in his 23rd year Jason would make

a(23) = $80,000 + ($5,000)(23 - 1), or

$110,080

3 0
2 years ago
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This is confusing someone help please
Marat540 [252]

Answer:

Below in BOLD.

Step-by-step explanation:

5x^2 - 6x - 2 = 0

Quadratic formula for ax^2 + bx + c = 0  is

x =  [-b ± √(b^2 - 4ac)]/ 2a    

Here we have a = 5, b = -6 and c = -2

so x =  [-(-6)  ± √((-6)^2 - 4*5*-2)]/ 2*5

=  [ 6 ± √(36 + 40)] / 10

= 0.6 ±  √76 / 10

= 0.6 ±  0.8718

= 1.4718,  -0.2718

= 1.5, -0.3 to one decimal place.

x^2 + 3x = 40

x^2 + 3x - 40 = 0

We can factor this one:

(x - 5)(x + 8) = 0

x - 5 = 0 giving x = 5 and

x + 8 = 0 giving x = -8.

Answer  x = -8, 5.

4 0
2 years ago
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