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BartSMP [9]
3 years ago
6

the middle of a game, Dawn has a score of -17. At the end of the game, Dawn’s score increases by 21. What is Dawn’s score at the

end of the game? Show your work.
Mathematics
1 answer:
Elina [12.6K]3 years ago
4 0

Answer:

4

Step-by-step explanation:

-17 + 21 is the same thing as 21 - 17, and 21 - 17 is 4

hope this helps! :D

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An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n
kramer

Answer:

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Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 232 V

Sample mean, \bar{x} = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

H_{0}: \mu = 232\\H_A: \mu \neq 232

We use Two-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} } Putting all the values, we have

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Now,

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|t_{stat}| > |t_{critical}|

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0
2 years ago
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