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Alisiya [41]
3 years ago
15

Choose the correct answer below. A. The first step in the process of statistics is to collect the data. B. Data are typically co

llected from a sample because it is too difficult and expensive to collect data from an entire population. C. When the results from a sample are extended to the​ population, it is called inference. D. If data are not collected​ properly, the conclusions that are drawn will be meaningless.
Mathematics
1 answer:
Elenna [48]3 years ago
3 0

Answer: The following statements are correct :

Data are typically collected from a sample because it is too difficult and expensive to collect data from an entire population.

When the results from a sample are extended to the​ population, it is called inference.

If data are not collected​ properly, the conclusions that are drawn will be meaningless.

The following statement is false: <u><em>The first step in the process of statistics is to collect the data.</em></u>

The first step in the process of statistics is to <em><u>Plan: develop a statistical inquiry that can be answered with aggregation of data.</u></em>

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HELP NEEDED IMMEDIATELY! I'M GETTING DESPERATE!
TiliK225 [7]

Answer:

The number of different possible values are {-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}.

Step-by-step explanation:

Given : For an integer n, the inequality  \[x^2 + nx + 15 < 0\]  has no real solutions in x.

To find : The number of different possible values of n ?

Solution :

The given inequality is   \[x^2 + nx + 15 < 0\] have no solution then the discriminant must be less than zero.

i.e. b^2-4ac

Here, a=1, b=n and c=15

{n}^{2}  - 4 \times 1 \times 15  \: <  \: 0

{n}^{2}  - 60  \: <  \: 0  

n^2

n

n

i.e. - 7.75 \:  <  \: n \:  <  \: 7.75

The integer values are {-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}.

7 0
3 years ago
a man used $3 to pay for 16 postage stamps. x of them are 15 cents each and the rest are 20 cents each. a) Write down an equatio
Vaselesa [24]

Answer:

Step-by-step explanation:

x = 15 cent stamps

y = 20 cent stamps

I will be using these equations

x + y = 16

0.15x + 0.20y = 3

x = 16 - y

0.15(16 - y) + 0.20y = 3

2.40 - 0.15y + 0.20y = 3

-0.15y + 0.20y = 3 - 2.40

0.05y = 0.60

y = 0.60/0.05

y = 12.......there were 12 twenty cent stamps

x + y = 16

x + 12 = 16

x = 16 - 12

x = 4.....there were 4 fifteen cent stamps

no change is received

7 0
4 years ago
Please help me find it i will give 20 pts
jolli1 [7]

Answer:

a) 23.5619449 m^2     b) 351.8583772 cm^2      c) 75.39822369 cm^2

Step-by-step explanation:

a):

SA = 2πr^2+2πr

r= 3/2 = 1.5

SA= 2π*1.5^2 + 2π*1.5

SA= 15/2 ∏

SA= 23.5619449 m^2 round it as you want

b): Same steps as "a" but rather than m^2 it is cm^2

the answer will be:

SA= 112π

SA= 351.8583772 cm^2  round it as you want

c): the radius is already given so just place it in place of r

SA= 2π*3^2 + 2π*3

SA= 24π

SA= 75.39822369 cm^2

5 0
3 years ago
Can somebody please help answer these questions (show ur work)
Ymorist [56]

Answer:

Question 2) 96 Question 3) 246

Step-by-step explanation:

Question 2:
The area of one side of the square is 4x4 which is 16 then you know a cube has 6 sides so 16x6 which is 96.


Question 3:
Well we know the two sides are squares with 3x3 which is 9 and then there are two so 9x2 which is 18

Then the front side with dimensions of 19x3 which is 57 and we know there are 4 sides so we do 57x4 which leads us to 228

Then we add 18 and 228 to find 246

7 0
2 years ago
What's the property of 34+0+18+26
dimulka [17.4K]
59 is the answer to this question


8 0
3 years ago
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