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poizon [28]
3 years ago
11

Kiera wanted to find the approximate number of history books at the Library she works at she used the computer to randomly take

a sample 80 books and found 6 of them were considered history books. There are 21,360 books at this library. What is the best estimate of the amount of history books at this library
Mathematics
1 answer:
Goshia [24]3 years ago
8 0
7rxrrdridurudrskuzrYe
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What is the mean of 72,73,86,59,75,58,50,55
Rashid [163]
<h3><u>MEAN</u></h3>

Mean is the average. To find the mean of a data set, you have to add all the numbers and divide the sum by the amount of numbers you added.

<em>In this equation, you have 8 numbers. That means you will be dividing by 8. </em>

The first thing you need to do is add all the numbers. Add:

72+73+86+59+75+58+50+55 = \bf 528

Now that you have added all the numbers and got the sum, divide by 8. Remember that you will be dividing by 8 since you added 8 numbers.

Divide:

528 \div 8 = \bf 66

The mean is 66

<em>If you have any questions, feel free to ask in the comments! :)</em>

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Using this distribution, find the probability
kaheart [24]

Answer:

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Step-by-step explanation:

Here, we are to use the probability distribution in the table to calculate the probability that a children has 4 or more shoes in his or her closet

When we say 4 or more, what we mean by this is that the teenager has 4 shoes or 5 shoes

In probability expressions, when we use the term ‘or’ we are simply talking about adding the terms involved

So what we can do here is to add the probability that the teenager has 4 shoes to the probability that the teenager has five shoes

From the table that would be; 0.1 + 0.2 = 0.3

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Does any one know the answer to this thank you
makvit [3.9K]

Answer:

The First choice

Step-by-step explanation:

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Answer:

30

Step-by-step explanation:

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