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Maslowich
3 years ago
5

Solve the system using elimination. 2x-4y=-22 7x+5y=18 what are the coordinates

Mathematics
1 answer:
user100 [1]3 years ago
6 0

Answer:

The coordinates are (22, 18)

Step-by-step explanation: hope this helps its a bit easy if ur in middle school

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(20 points) A statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s
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Answer:

The P-value is 0.0234.

Step-by-step explanation:

We are given that a statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s = 20.

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So, Null Hypothesis, : = 100 {means that the population mean is equal to 100}

Alternate Hypothesis, : > 100 {means that the population mean is more than 100}

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= -2

The value of t-test statistics is -2.

Now, the P-value of the test statistics is given by;

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