What are 3 equivalent ratios to 3:11
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The margin of error is 0.97849
we are given
mean=235
so,
standard deviation =7.5
so,
we know that
ME=2*standard error
and
If confidence level is 95%, then we can multiply by 1.96
so, we can multiply by 2 to get ME
now, we can use marginal error formula
now, we can plug values
and we get
To find how much was spent on fresh flowers, we just multiply 9% to the monthly budget, which is $18,000.
To multiply a percent to a number, we must first turn the percent into a decimal. Just divide the percent by 100 to get the decimal form. 9% is 0.09.
$1620 was spent on fresh flowers (that's quite a lot of money!)