I NEED HELP I already have the expressions that are equivalent that are 4x + 18 and 2 (2x + 9x) only that one, but I am missing the explanation and the question
Why might you want to rewrite 1x + 0.05x as 1.05x?
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Why might you want to rewrite 1x + 0.05x as 1.05x?

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Ответ:

Arealbot

17.01.2021

Mathematics

(a) $13.046<\mu< 22.15$

(b) The best point estimate of $\mu$ is the sample mean =17.598

The margin of error = 4.552

Step-by-step explanation:

Given : The confidence interval for the population mean = (13.046 , 22.15)

Sample mean : $\overline{x}=17.598$

Standard deviation : $\sigma= 16.01712719$

Sample size : n=50

a. Let $\mu$ represents the population mean.

Then we can write the confidence interval for the population mean as :-

$13.046<\mu< 22.15$

b. The best point estimate of $\mu$ is the sample mean =17.598

Also, the lower limit of confidence interval can be written as

$\overlien{x}-E$

i.e. $\overlien{x}-E=13.046$

$E=\overline{x}-13.046=17.598 -13.046=4.552$

Hence, the margin of error = 4.552

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