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inysia [295]
3 years ago
6

Sorry if it’s hard to see . can anybody help me with this ?

Mathematics
2 answers:
AnnZ [28]3 years ago
7 0

Answer:

x = 5

Step-by-step explanation:

since the work is already done for you, all you have to do is divide 20 by 4, which gives you 5.

you can also check this answer by multiplying 4 by 5, which would give you 20, further proving the answer.

Alchen [17]3 years ago
5 0

Answer:

5

Step-by-step explanation:

4/4 crosses out and 20/4=5 so x=5

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Eric is studying people's typing habits. He surveyed 525 people and asked whether they leave one space or two spaces after a per
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}}

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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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