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BARSIC [14]
3 years ago
5

What are the measures of an Anemometer

Mathematics
1 answer:
Sav [38]3 years ago
3 0
WOW THIS IS EASY IT C
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The scores on the LSAT are approximately normal with mean of 150.7 and standard deviation of 10.2. (Source: www.lsat.org.) Queen
faltersainse [42]

Answer:

a=150.7 -0.385*10.2=146.773

So the value of height that separates the bottom 35% of data from the top 65% (Or the 35 percentile) is 146.7.  

Step-by-step explanation:

1) 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".  

2) Solution to the problem

Let X the random variable that represent the  scores on the LSAT of a population, and for this case we know the distribution for X is given by:

X \sim N(150.7,10.2)  

Where \mu=150.7 and \sigma=10.2

We want to find a value a, such that we satisfy this condition:

P(X>a)=0.65   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.35 of the area on the left and 0.65 of the area on the right it's z=-0.385. On this case P(Z<-0.385)=0.35 and P(Z>-0.385)=0.65

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

Z=-0.385

And if we solve for a we got

a=150.7 -0.385*10.2=146.773

So the value of height that separates the bottom 35% of data from the top 65% (Or the 35 percentile) is 146.7.  

5 0
3 years ago
Read 2 more answers
Geometry...Please help as soon as possible please and Thank you so much
Radda [10]

Answer:

They are equal since they are both 90 degree angles.

Step-by-step explanation: Please brainliest? (Sorry if not correct.)

7 0
2 years ago
From 86 books to 150 books
Mademuasel [1]
150 books-86 books= 64 books.

We originally have 86 books, so the percent of increase is:
64 books/ 86 books* 100%= 74.42%

The percent of increase is 74.42%~
8 0
3 years ago
Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviat
german

Answer:

Range =94

σ² = 1,141.564

Standard Deviation = 33.78703

Step-by-step explanation:

First off to find the range, we find the highest value and subtract it to the lowest value. In this situation the values are:

Highest = 99

Lowest = 5

Range = 99 - 5

Range = 94

Now to find the variance of the sample data set, we first need to find for the mean of the data.

The mean of the data with be the sum of all the numbers in the data set divided by the number of samples.

5 + 14 + 26 + 50 + 60 +72 + 79 + 88 + 93 +94 + 99

That would equal 680

Then you divide the number of samples and that is 11 so the next equation is 680 divided by 11

So the then-

Mean = 61.81818

Now to find the variance we simply use the formula:

Now to find the variance we simply use the formula:

σ²=\frac{(xi - Mean)^{2}  }{n-1}

σ²=\frac{(5 - 61.818)^{2} + (14 - 61.818)^{2} + (26 - 61.818)^2 +  (99 - 61.818)^2} {11-1}

σ²=\frac{11,415.64}{10}

σ²=1,141.564

Now to find the standard deviation, we take the variance and get the square root of it.

Standard Deviation= \sqrt{1,141.564}

Standard Deviation= 33.78703

HOPE THIS HELPS :)

6 0
2 years ago
Write an equivalent expression for 40 + 8(n-3)​
omeli [17]
An equivalent expression is
40 + 8n - 24
simplified:
16 + 8n

hope this helps!
3 0
3 years ago
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