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zaida00
08.12.2020 •
Mathematics
Can anyone please answer my question :( It would really mean a lot to me, I’ll give brainiest. A figure has a rotational symmetry if a rotation of 180 degrees or less produces an image that fits exactly on the original figure. Select each degree of rotation that shows the figure below has rotational symmetry
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Ответ:
37
Step-by-step explanation:
As per given description in the question, we have
Population standard deviation :![\sigma=2.6\text{ miles per gallon}](/tpl/images/0359/7818/8b56c.png)
Critical value for 98% confidence interval =![z_{\alpha/2}=2.33](/tpl/images/0359/7818/8f84a.png)
Margin of error : E= 1 mile per gallon
Formula we use to find the sample size :
i.e.![n=(\dfrac{(2.33)\cdot(2.6)}{1})^2](/tpl/images/0359/7818/f478f.png)
Therefore , the number of automobiles should be used in the test =37