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Yuki888 [10]
3 years ago
7

A middle school contains sixth, seventh, and eighth graders. Each grade level contains approximately the same number of students

. The principal wants to find the answer to a survey question affecting each student in the school. He asks a sample group “What time do you get up in the morning?” Which of these characteristics define the best sample?
one student chosen at random from each grade level
an equal number of students chosen at random from each grade level
the first 10 students from each grade level to arrive at school in the morning
all students arriving on one bus
Mathematics
2 answers:
AysviL [449]3 years ago
6 0
I think the answer will be an equal number of students chosen at random from each grade level. Hope it help!
astraxan [27]3 years ago
4 0

Answer:

"Sample in statistics is a small quantity that shows you what the rest is or should be like" .

The best sample would be:

an equal number of students chosen at random from each grade level.

Since by randomly selecting some students such that there are equal number of students from each grade we could easily get the information of all the students.


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11111nata11111 [884]

Answer:

Step-by-step explanation:

Alright, lets get started.

When two secants intersects outside a circle then the measure of the angle formed is half of the positive difference of the measures of the intercepted arcs. (Please refer the diagram I have attached)

Hence the measure of ∠1 is :

∠1=\frac{1}{2}(100-30)

∠1=\frac{1}{2}*70=35

hence the answer is 35°.    :    Answer

Hope it will help :)


5 0
3 years ago
The total expenditures on benefits​ (in billions of​ dollars) can be approximated by the function h(x)=23.5(1.08)x​, where x​ =
Katyanochek1 [597]
Sorry don’t know but good luck
5 0
3 years ago
A salesman needed to sell a used car. He priced it at $4,500 the first day it was on the
Akimi4 [234]

Answer:

$3960

Step-by-step explanation:

12% of $4,500 is 540.

Subtracting the 12% means taking away $540 from $4,500, which gives you $3960

7 0
3 years ago
Solve the right triangle. Round decimal answers to the nearest tenth.
AnnZ [28]

Answer:

See solution below

Step-by-step explanation:

According to pythagoras theorem

hyp^2 = opp^2 + adj^2

10^2 = 4^2 + b^2

100 = 16 + b^2

b^2 = 100-16

b^2 = 84

b = √84

b ≈ 9

Using SOH CHA TOA identity

sin B = AC/AB

Sin B = 9/10

B = arcsin0.9

B ≈ 64degrees

sinA = BC/AB

Sin A = 4/10

A = arcsin0.4

A ≈ 24degrees

5 0
3 years ago
(9x−2.25)=(1.6+9x)<br><br> help
mel-nik [20]
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4 0
3 years ago
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