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Oxana [17]
3 years ago
7

Simplify 17^2 and 18.79^2.

Mathematics
1 answer:
Westkost [7]3 years ago
7 0

17^2 is 289

18.79^2 is 353.0641

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Your start-up business is looking into the energy usage in the community of south lawndale. your sample size is 12 months. use t
Aleonysh [2.5K]

The confidence interval at 95% level is

7106.87 <  μ< 14255.27

<h3>What is meant be mean and standard deviation?</h3>

The ratio of sum of observations to the total number of observation is known as mean. It is one of the central tendency in the statistics. It gives an idea about the central value present in the data. The most sensitive measure of central tendency is mean. It is very easy to calculate. Mean playa a crucial role in daily life. The two types of means are Arithmetic mean and Geometric mean.

Standard deviation is a measure in the statistics. The amount of variation of a set of values is known as standard deviation. Standard deviation is denoted by σ.

As per given data

90% confident level for amount of electricity used in community of Austin is

X-tx/2(n-1)s/√n < μ < X+ tx/2(n-1)s/√n

Here , n=12 ,  X=10681.07 , s=6893.87

Margin of error = tx/2(n-1)s/√n

=(1.796×6893.87)/√12

=3574.1996

=3574.19(approximately)

Therefore, 90% CI is,

10681.07-3574.19 ≤ μ<10681.07+3574.19

7106.87 <  μ< 14255.27

To know more about mean and standard deviation, visit:

brainly.com/question/14720855

#SPJ4

5 0
1 year ago
Identify the decimals labeled with letters A B and C on the scale
Dominik [7]

Answer:

A. 37.39 B. 37.41 C. 37.27

6 0
3 years ago
15(t+2)+9t=6 Please help!
yawa3891 [41]

Answer:

t = -1

Step-by-step explanation:

15(t+2)+9t=6

15t + 30 + 9t = 6

combine like terms

24t +30 = 6

subtract 30 both sides

24t = -24

t = -1

22-5(6v-1) = -63

22- 30v + 5 = -63

27 -30v = -63

subtract both sides by 27

-30v = -90

divide it by -30

v = 3

7 0
3 years ago
Read 2 more answers
Monthly earnings total $4513. find the social security tax deducted
Mandarinka [93]
4513 * 7.65%=
$345.24
4 0
3 years ago
choose the standard form of the equation of the circle with radius 5 √ 3 centered at( -6, 2) please help ​
Ilia_Sergeevich [38]

Answer:

(x + 6)² + (y - 2)² = 75

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 6, 2) and r = 5\sqrt{3}, hence

(x - (- 6))² + (y - 2)² = (5\sqrt{3} )², that is

(x + 6)² + (y - 2)² = 75

8 0
3 years ago
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