20 multiplied by three

Mathematics

2 answers:

vodomira [7]3 years ago

7 0

The answer is 60 because 2x3 is 6 so 20x 3 is 60

larisa [96]3 years ago

4 0

When you have a multiplication problem add the highest number to itself as many times as the other number so like 10 x 5 add 10 together 5 times
ANSWER WOULD BE 60 BECAUSE
add 20 to itself 3 times
20 plus 20 plus 20
Which is 60
It really helps I swear :))

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Rzqust [24]

Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

In this problem, we have a 90% confidence level, hence $\alpha = 0.9$ , z is the value of Z that has a p-value of $\frac{1+0.9}{2} = 0.95$ , so the critical value is z = 1.645.