3 years ago

SHOW YOUR WORK PLS !!!!!!

Mathematics

1 answer:

rusak2 [61]3 years ago

8 0

Answer:X=16*4=64

Soowwwyyy..

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g Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 21, upper

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Answer: The point estimate of the population mean is 23. The margin of error for the confidence interval is 2.

Step-by-step explanation:

The confidence interval for the mean is of the form is given by :-

$\overline{x}-\text{error}\leq\mu\leq\overline{x}+\text{error}$

Given : Lower bound: $\overline{x}-\text{error}=21$

Upper bound : $\overline{x}+\text{error}= 25$

Then ,the sum of lower and upper bound will be :-

$2\overline{x}=21+25=46\\\\\Rightarrow\ \overline{x}=23$

Since $\overline{x}-\text{error}=21$

$\Rightarrow\ \text{Error}=\overline{x}-21=23-21=2$

Hence, The point estimate of the population mean is 23. The margin of error for the confidence interval is 2.

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4 years ago

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When x = -2, f(x) = -7(-2) + 3 = 14 + 3

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A poll of 61 students found that 22% were in favor of raising tution to pave new parking lots. The standard deviation of this po

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