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zhuklara [117]
3 years ago
15

A sample of students will be selected from all the students at a high school. Which of the following sampling methods is least l

ikely to produce a representative sample of the students?
From a list of all student names, randomly select 50 names from the list for the sample.
A



Randomly choose five classrooms in the school and use all the students in those classrooms for the sample.
B



Divide the students into the four class years (freshman, sophomore, junior, senior) and randomly select students from each year in proportion to the number of students in each year.
C


From a numbered list of all student names, randomly choose a starting point and then choose every tenth student on the list.
D

From a randomly chosen home basketball game, choose every tenth student who enters the gymnasium.
E
Mathematics
1 answer:
Feliz [49]3 years ago
8 0

Answer:

B seems most logical and fair

Step-by-step explanation:

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In 1990, the profit of the Gamma company was $11.900,848. Each year after 1990profits fell by \$48,263 on average Construct a li
Marina86 [1]

Answer:

$10452958

Step-by-step explanation:

Initial profit = $11900848

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3 years ago
Plz Help ASAP! I will mark Brainliest!
Olenka [21]

Answer:

∠A = 70°, ∠B = 50°, and ∠C = 60°.

Step-by-step explanation:

In a triangle ΔABC, ∠A + ∠B + ∠C = 180° ......... (1), we know from the property of triangle.

Now, the sum of ∠C and the exterior angle adjacent to ∠C is 180°.

If the exterior angle adjacent to ∠C is 120°, then ∠C = 180° - 120° = 60°.

Now, from equation (1), ∠A + ∠B = 180° - ∠C = 180° - 60° = 120° ......... (2)

Now, given that ∠A = 2x and ∠B = x + 15.

Hence, from equation (2), we have, 2x + x + 15 = 120

⇒ 3x = 105

⇒ x = 35.

Therefore, ∠A = 2x = 2 × 35 = 70°

∠B = x + 15 = 35 + 15 = 50°

and ∠C = 60° (Answer)  

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3 years ago
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Reil [10]

Answer:

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Then i will help you in the comment

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Answer:

Step-by-step explanation:

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Answer:

The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate.

Step-by-step explanation:

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