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Delicious77 [7]
3 years ago
9

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers. According

ly, his staff recorded the waiting times for 45 randomly selected walk-in customers, and calculated that their mean waiting time was 15 minutes. If Brian concludes that the average waiting time for all walk-in customers is 15 minutes, he is using a ________.
Mathematics
1 answer:
dedylja [7]3 years ago
8 0

Answer:

statistical parameter

Step-by-step explanation:

In this scenario, Brian Vanecek is using a statistical parameter also known as a population parameter. This is the best explanation to what Brian is using since he is calculating the average waiting time based on the information gathered from a randomly selected sample of the population. Since this sample was random it exemplifies the entire population and therefore allows for the data to be generalized to that population. Using the statistics gathered he can calculate the average waiting time as a statistical parameter of the population.

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3 years ago
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denpristay [2]
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6 0
3 years ago
A carnival is being set up in your hometown. From experience, the carnival organizer knows that the amount of money he will brin
pentagon [3]

Answer:

$6,200

Step-by-step explanation:

The question is to find the expected value.

We know the expected value of a scenario is the sum of the products of each probability of event and its profit or loss.

There are 3 probabilities in the scenario:

Rainy: 20% = 20/100 = 0.2

Sunny: 50% = 50/100 = 0.5

Cloudy: Rest, which is 100 - (50+20) = 100 - 70 = 30% = 30/100 = 0.3

Now, the gain and loss is:

Rainy: Lose 5000 means -5000

Cloudy: Gain 4000 means +4000

Sunny: Gain 12,000 means +12,000

Now, the expected value is:

Expected Value = (0.2)(-5000) + (0.5)(12000) + (0.3)(4000) =  $6,200

8 0
3 years ago
Which point on the axis satisfies the inequality y&lt;x​
Vika [28.1K]

Answer:

every point where x is greater than y or  y-x<0

namely, every point below the straight line y=x that cuts the cartesian plane in two

Step-by-step explanation:

6 0
3 years ago
Why is exponential functions important to know when owning a business ?
Ronch [10]

Answer:

You need to know your math!

Step-by-step explanation:

If your gonna start a business you have to know your math, sure you can hire people but people work for cash, so when you start out on your own with your business you need to know your math so you can keep the business running. Hope this helps! :)

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3 years ago
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