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Serjik [45]
3 years ago
8

How to solve the problem or at least help me with setting up the problem.

Mathematics
1 answer:
satela [25.4K]3 years ago
3 0
So... she was making $1,500, then her salary got slashed by 10% of that
find how much 10% of 1,500 is, the subtract "that amount" from 1,500
and that's what she's makes now

then later one, whatever that is, gets bumped by 20%
find 20% of that amount you found, and add it to it

{{ a}}\%\ of\ b \implies  \cfrac{{{ a}}}{100}\cdot b\implies {{ a}}\div 100\cdot b\qquad thus
\\ \quad \\
{{ 10}}\%\ of\ 1,500 \implies  \cfrac{{{ 10}}}{100}\cdot 1,500\implies {{ 10}}\div 100\cdot 1,500
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<h3>What is a confidence interval?</h3>

It is defined as the sampling distribution following an approximately normal distribution for known standard deviation.

We have:

A survey of 504 citizens found that 378 of them favor a new bill introduced by the city.

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