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pantera1 [17]
3 years ago
15

le" class="latex-formula">
Dose any one know​
Mathematics
2 answers:
Inessa [10]3 years ago
5 0
77 times 100 is 7,700. So your answer is 7,700
Gennadij [26K]3 years ago
5 0
7,700 a trick with 10s is to just add the number of zeros hoped that helped
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Otrada [13]

Answer: (0.8115, 0.8645)

Step-by-step explanation:

Let p be the proportion of people who leave one space after a period.

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i.e. sample proportion: \hat{p}=\dfrac{440}{525}\approx0.838

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\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

0.838\pm (1.645)\sqrt{\dfrac{0.838(1-0.838)}{525}}\\\\=0.838\pm (1.645)\sqrt{0.00025858285}\\\\=0.838\pm (1.645)(0.01608)\\\\= 0.838\pm0.0265\\\\=(0.838-0.0265,\ 0.838+0.0265)\\\\=(0.8115,\ 0.8645)

Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)

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3 years ago
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