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babymother [125]
3 years ago
12

Trisha standford earns $300 a week plus a 15% commission only on sales she makes after her first $1,000 in sales if ms standford

s sales for one week are $2,500 what is her gross pay for that week
Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
4 0

Answer:

Her gross pay for the week

= $300 +$225=$525

Step-by-step explanation:

Trisha standford earns $300 a week plus a 15% commission only on sales she makes after her first $1,000. In this week,she made sales of $2500. But she can only earn 15% commission after sales of $1000.she made sales of $2500, so she can make 15% commission on $1500= ($2500-$1000)

=15/100 ×1500=0.15×1500=$225

So if she earns $300 plus a 15% commission only on sales she makes after her first $1,000,

Then her gross pay for the week

= $300 +$225=$525

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The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem
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Answer:

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E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

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Step-by-step explanation:

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X        1060   1400    1620

P(X)     0.5      0.1        0.4

In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

The variance of a random variable Var(X) is the expected value of the squared deviation from the mean of X, E(X).

And the standard deviation of a random variable X is just the square root of the variance.  

In order to calculate the expected value we can use the following formula:  

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=(1060*0.5) +(1400*0.1) +(1620*0.4)=1318  

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3 years ago
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