Find the length of the segment indicated. Round your answer to the nearest tenth if necessary.

Mathematics

1 answer:

luda_lava [24]2 years ago

3 0

Answer:

<em>Length of x ~ 10.5; Option B</em>

Step-by-step explanation:

1. There are three radii present in this problem. Of that the diamter is supposedly 42.2 units. Given that the radii should be ⇒ 42.2 / 2 ⇒ 21.2 units

2. With that being said the 3rd radii contains parts x and 10.6. By radii congruency, the length of all radii should be the same, so this 3rd radii should = 21.2 units as well. If so, by the Partition Postulate 21.2 = x + 10.6

3. Through algebra let us solve for x:

21.2 = x + 10.6,

x = 21.2 - 10.6,

<em>Answer ~ Length of x: 10.5</em>

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Answer:

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Mean Square Error for the estimator = 6.6311

Step-by-step explanation:

Given - A normally distributed random variable with mean 4.5 and standard deviation 7.6 is sampled to get two independent values, X1 and X2. The mean is estimated using the formula (3X1 + 4X2)/8.

To find - Determine the bias and the mean squared error for this estimator of the mean.

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Let us denote

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Now,

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$\mu = \frac{3X_{1} + 4X_{2} }{8}$