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nataly862011 [7]
3 years ago
13

4 students is blank percent of 20 students

Mathematics
2 answers:
lara31 [8.8K]3 years ago
5 0
4 divided by 20 = 1/5
1/5 = 20%
20%, Hope this helps!
VLD [36.1K]3 years ago
5 0
4 students are 20% of 20 students.
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A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly that airline again. Find th
prohojiy [21]

Answer:

\hat p =\frac{X}{n}

And replacing we got:

\hat p =\frac{132}{146}= 0.904

And for this case the standard error assuming normality would be given by:

SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}

And replacing we got:

SE= \sqrt{\frac{0.904*(1-0.904)}{146}}= 0.024

Step-by-step explanation:

For this problem we know the following notation:

n= 146 represent the sample size selected

X= 132 represent the number of airplane travelers who after a flight  would fly that airline again

The estimated proportion for this case would be:

\hat p =\frac{X}{n}

And replacing we got:

\hat p =\frac{132}{146}= 0.904

And for this case the standard error assuming normality would be given by:

SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}

And replacing we got:

SE= \sqrt{\frac{0.904*(1-0.904)}{146}}= 0.024

5 0
3 years ago
How do you solve 1\5 b = 2​
Georgia [21]

Answer:

b = 10

Step-by-step explanation:

You can solve for b by dividing both sides by 1/5 because it will remove the 1/5 from the left side of the equation, but what you do to one side you must do to the other side as well.

(1/5b)/ (1/5) = 2/ (1/5)

b = 10

7 0
4 years ago
Read 2 more answers
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