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Brut [27]
2 years ago
7

Read Below It tell you

Mathematics
1 answer:
jeka57 [31]2 years ago
6 0

Answer:

A) All whole numbers from 0 to 10

Step-by-step explanation:

The domain cannot exceed 10 because they do not have enough time to build more than 10 birdhouses. This rules our all nonnegative real numbers and all real numbers.

Integers include negative numbers as well, but it isn't possible to make -1 birdhouses, so this choice is wrong.

Therefore, the answer is all whole numbers from 0 to 10

hope this helps! <3

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The sum of all the odd numbers from 1 to 59 is 900.
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Circle the largest decimal in each of the following groups.
ExtremeBDS [4]

A. 0.370

B. 0.44

C. 0.1

D. 2.75

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Step-by-step explanation:

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Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
masya89 [10]

Answer:

z= \frac{3.44-2.54}{0.45}=2

P(X>3.44) = P(Z>2) = 0.025

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".  

Solution to the problem

Let X the random variable that represent the grade points avergae of a population, and for this case we know the following properties

Where \mu=2.54 and \sigma=0.45

The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ). Broken down, the empirical rule shows that 68% falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ).

So we can find the z score for the value of X=3.44 in order to see how many deviations above or belowe we are from the mean like this:

z= \frac{3.44-2.54}{0.45}=2

So the value of 3.44 is 2 deviations above from the mean, so then we know that the percentage between two deviations from the mean is 95% and on each tail we need to have (100-95)/2 = 2.5% , because the distribution is symmetrical, so based on this we can conclude that:

P(X>3.44) = P(Z>2) = 0.025

5 0
3 years ago
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