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Amanda [17]
3 years ago
8

What percent of the buildings are no taller than 345 meters?

Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

the answer is 75%

each dot represents 25% of the data

Below 345 meters are 3 points

so, 3 * 25% = 75%

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Evaluate d/2 + c/3 for c = 6 and d = 10 <br><br> a) 10<br> b) 16/5<br> c) 7<br> d) 6
pshichka [43]
D/2 + c/3

10/2 + 6/3

5+6/3

=5+2

=7



4 0
3 years ago
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melisa1 [442]

Answer: 30

Step-by-step explanation:

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6 0
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Maksim231197 [3]

Answer:

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3 0
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assume the age of night school students is normally distributed. A simple random sample of 24 night school students had an avera
aleksley [76]
Let
n = number of data
s = standard deviation (sample)
S = standard deviation (population)

The working equations is

\frac{(n-1) s^{2} }{ x^{2}_{right} }  \ \textless \   S^{2} \ \textless \   \frac{(n-1) s^{2} }{ x^{2}_{left} }

To find x^{2}_{right}, : (1 - 0.90)/2 = 0.05

To find x^{2}_{left}, : 1 - 0.05 = 0.95

Degrees of freedom = n-1 = 24 - 1 = 23

This is shown in the figure attached. Since there is no row for df=23, we interpolate. Thus,

 x^{2}_{left} = 13.093 

 x^{2}_{right} = 35.17 


Substitute all values,

\frac{(24-1) 5.6^{2} }{ 35.17} \ \textless \ S^{2} \ \textless \ \frac{(24-1)  5.6^{2} }{ 13.093} }

Thus the answer is,

20.51\  \textless \ S^{2} \ \textless \ 55.09

5 0
3 years ago
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Firdavs [7]
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8 0
2 years ago
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