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Anton [14]
2 years ago
13

1. The number of employees at a certain company is 1440 and is increasing

Mathematics
1 answer:
adelina 88 [10]2 years ago
6 0

Answer:

y = 1440 e^{0.015 t}

y(9) = 1440 e^{0.015*9}= 1648.133

So then after 9 years we will have approximately 1649 number of employees

Step-by-step explanation:

For this case we want to model the number of employees and we need to use an exponential model given by this general expression:

y = y_o e^{rt}

For this case the initial amount is y_o = 1440 and the rate r =0.015

And then the model would be given by

y = 1440 e^{0.015 t}

And if we find the value for t =9 years we got:

y(9) = 1440 e^{0.015*9}= 1648.133

So then after 9 years we will have approximately 1649 number of employees

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Albert Abbasi, VP of Operations at Ingleside International Bank, is evaluating the service level provided to walk-in customers.
In-s [12.5K]

Answer:

The probability that Albert's sample of 64 will have a mean between 13.5 and 16.5 minutes is 0.9973.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

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Solution to the problem

We are interested on this probability

P(13.5  

If we apply the Z score formula to our probability we got this:

P(13.5

=P(\frac{13.5-15}{\frac{4}{\sqrt{64}}}

And we can find this probability on this way:

P(-3

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-3

The probability that Albert's sample of 64 will have a mean between 13.5 and 16.5 minutes is 0.9973.

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2 years ago
Find the ratio of $22 to $5.50
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Answer:

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Step-by-step explanation:

22/5.50

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5.50/5.50=1

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Step-by-step explanation:

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