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sdas [7]
3 years ago
7

A company offered one half of its employees a bonus if the production of light bulbs increased by 30%. The other half of the emp

loyees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 30.
What is the correct order of steps to determine if the results are significant?

A. Run the experiment many times.
B. Randomly separate the employees’ individual results into two groups.
C. Calculate the probability of a difference of 10.
D. Calculate the difference of the means.
E. Calculate the mean of each group.

A, B, C, D, E
A, B, C, E, D
B, E, D, C, A
B, E, D, A, C
Mathematics
2 answers:
Artist 52 [7]3 years ago
5 0

Answer with explanation:

The Meaning of the statement "Result are Significant" is that ,if you repeat the experiment under identical condition they produce the same outcome most of time.

Now, to determine if the results are significant,the correct order of steps should be:

A: Run the experiment many times.

B: Randomly separate the employees’ individual results into two groups.

C:  Calculate the probability of a difference of 10.

E: Calculate the mean of each group.

D: Calculate the difference of the means.

Option B:→ A,B,C,E,D

Anuta_ua [19.1K]3 years ago
4 0
This should be the answer B,E,D,A,C
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sveticcg [70]

Answer:

B 25.0 is the right answer

Step-by-step explanation:

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A rectangular flower box holds 1232in^3 of soil. Find the length of the box if it is 22 in. long and 7 in wide
Studentka2010 [4]
The length of the flower pot is 8
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3 years ago
The difference between the two roots of the equation 3x^2+10x+c=0 is 4 2/3 . Find the solutions for the equation.
andrezito [222]

Answer:

Given the equation: 3x^2+10x+c =0

A quadratic equation is in the form: ax^2+bx+c = 0 where a, b ,c are the coefficient and a≠0 then the solution is given by :

x_{1,2} = \frac{-b\pm \sqrt{b^2-4ac}}{2a} ......[1]

On comparing with given equation we get;

a =3 , b = 10

then, substitute these in equation [1] to solve for c;

x_{1,2} = \frac{-10\pm \sqrt{10^2-4\cdot 3 \cdot c}}{2 \cdot 3}

Simplify:

x_{1,2} = \frac{-10\pm \sqrt{100- 12c}}{6}

Also, it is given that the difference of two roots of the given equation is 4\frac{2}{3} = \frac{14}{3}

i.e,

x_1 -x_2 = \frac{14}{3}

Here,

x_1 = \frac{-10 + \sqrt{100- 12c}}{6} ,     ......[2]

x_2= \frac{-10 - \sqrt{100- 12c}}{6}       .....[3]

then;

\frac{-10 + \sqrt{100- 12c}}{6} - (\frac{-10 + \sqrt{100- 12c}}{6}) = \frac{14}{3}

simplify:

\frac{2 \sqrt{100- 12c} }{6} = \frac{14}{3}

or

\sqrt{100- 12c} = 14

Squaring both sides we get;

100-12c = 196

Subtract 100 from both sides, we get

100-12c -100= 196-100

Simplify:

-12c = -96

Divide both sides by -12 we get;

c = 8

Substitute the value of c in equation [2] and [3]; to solve x_1 , x_2

x_1 = \frac{-10 + \sqrt{100- 12\cdot 8}}{6}

or

x_1 = \frac{-10 + \sqrt{100- 96}}{6} or

x_1 = \frac{-10 + \sqrt{4}}{6}

Simplify:

x_1 = \frac{-4}{3}

Now, to solve for x_2 ;

x_2 = \frac{-10 - \sqrt{100- 12\cdot 8}}{6}

or

x_2 = \frac{-10 - \sqrt{100- 96}}{6} or

x_2 = \frac{-10 - \sqrt{4}}{6}

Simplify:

x_2 = -2

therefore, the solution for the given equation is: -\frac{4}{3} and -2.


3 0
3 years ago
please help me!!!!!!!!!!!!!
yKpoI14uk [10]
Let x be the length of each row.
Denver can plant 3 rows of a certain length with 2 seedlings leftover.
Total number of seeds he has = 3x+2 Denver can plant 4 rows of the same length with 3 seedling spots left empty.
Total number of seeds he has = 4x-3 Using (i) and (ii), we get= 3x+2=4x-3

Isolate variable terms: 2+3=4x-3
Answer= 5=X
5 0
3 years ago
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