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Andreyy89
2 years ago
14

STATISTICS!!!! PLEASE HELP ASAP

Mathematics
1 answer:
Rudiy272 years ago
5 0

Answer: they can conclude the distributions are different at the 95% confidence interval. Compute the z test statistic to solve this.

Step-by-step explanation: to get the 95% confidence interval on the mean take the mean value (984) +/- (2*standard deviation divided by the square root of the number of samples) (I.e. 984 +/- (2*267/sqrt(501)))

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What is the period of the sine funtion y = sin (2x) ?
Margarita [4]

Answer: a

Step-by-step explanation:

2x=2\pi

x=\pi ==> Period: \pi ==> a

8 0
2 years ago
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Dominic invited 50 friends online to play fortnite. Seven players decided to play after 8pm, nine before and the rest the same t
Anastaziya [24]

Answer:

68% of Dominics friends went on at the same time as him.

Step-by-step explanation:

50-7-4=34

34/50 =0.68 x 100 = 68%

6 0
4 years ago
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Find the area of the shaded region Gh= 13yd
Feliz [49]

Answer:

area ≈ 344. 93 yard²

Step-by-step explanation:

The question you are asking is a circle with shaded portion and a portion not shaded  . The radius of the circle is given as 13 yards . H is the center of the circle and unshaded part of the the sector has an angle of 126°.

The area of a sector = ∅/360 × πr²

The other angle of the shaded  portion is unknown . To find the angle we subtract 126° from 360°(complete angle).

360 - 126 = 234°

area of a sector = ∅/360 × πr²

where

∅ = 234°

r = 13 yards

area =  234/360 × π × 13²

area = 234/360 × π × 169

area = 39546π/360

area = 109.85π

area = 109.85 × 3.14

area  of the shaded part = 344.929  yard²

nearest hundred will be

area ≈ 344. 93 yard²

4 0
4 years ago
If P(x) = 0.35, find the complement
katovenus [111]
Hello : 
P(x) + P(x') =1   ...( x' is the <span>complement of x)
0.3 +</span> P(x') =1
 P(x') = 1 - 0.3 = 0.7
4 0
3 years ago
0.5(-10 + k) I did help asp
lana66690 [7]

use distributive property

0.5 x -10 = -5

0.5 x k = 0.5k

0.5(-10 + k) = 0.5k -5

7 0
3 years ago
Read 2 more answers
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