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3 years ago

A salon increased the sales by about 12.5% this week. If they sold 43 products last week, how many did they sell this week?

2 answers:

6 0

$43 + (43 \times 0.125) = 43\times 1.125\\\\= \boxed{\bf{ 48.375}}$

The salon sold 48.375 products this week.

Your final answer is 48.375 products.

natulia [17]3 years ago

3 0

<span>A salon increased the sales by about 12.5% this week.
Question: If they sold 43 products last week, how many did they sell this week?
=> 43 products sold are there usual sale every week.
=> Now, this week, they were able to increase their sales up to 12.5%. Let’s solve to find out how many products were added to their sale this week.
=> 43 products * 12.5%
=> 43 * .125 = 5.4 products were added to their sale and got a total of:
=> 43 + 5.4 = 48.4 products

</span>

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Add (1) and (3) term by term to eliminate x

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Let X1 and X2 be independent random variables with mean μand variance σ².

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So then we conclude that $\hat \theta_2$ is an unbiased estimator of $\mu$

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$Var(\hat \theta_2) =\frac{1}{16} [\sigma^2 + 9\sigma^2 ] =\frac{5\sigma^2}{8}$

Step-by-step explanation:

For this case we know that we have two random variables:

$X_1 , X_2$ both with mean $\mu = \mu$ and variance $\sigma^2$

And we define the following estimators:

$\hat \theta_1 = \frac{X_1 + X_2}{2}$

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