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Nataliya [291]
2 years ago
11

Find the perimeter of a quadrilateral with vertices at C (-2, 1), D (2, 4), E (5.0), and F (1, -3).Round your answer to the near

est hundredth when necessary.
1) 12 units
2) 16 units
3) 20 units
4) 24 units
Mathematics
1 answer:
Ede4ka [16]2 years ago
3 0

Answer:

16 units

Step-by-step explanation:

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Answer:

The 90% confidence interval for the mean test score is between 77.29 and 85.71.

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

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90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 2.064

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The upper end of the interval is the sample mean added to M. So it is 81.5 + 4.21 = 85.71.

The 90% confidence interval for the mean test score is between 77.29 and 85.71.

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