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denis-greek [22]
3 years ago
5

Carlin wants to determine the general attitude toward math of the students in the school. Which of the following methods will pr

oduce a random sample? A) survey 10 students from each of Mr. Lee’s math class. B) Survey all of the students in Carlin’s 1st period class. C) survey every 15th student who enters the cafeteria at lunchtime. D) survey every 3rd student in the list of honors students.
Mathematics
2 answers:
azamat3 years ago
7 0
C.) survey every 15th student who enters the cafeteria at lunchtime.
seropon [69]3 years ago
7 0

Answer:

C) survey every 15th student who enters the cafeteria at lunchtime.

Step-by-step explanation:

The sample is a subset of the population. We take samples because it is easy to analyze samples as compared to population and it is less time taken.

The sample is said to be a random sample if the sample is taken randomly or each unit is selected without any bias.

Option (A) is not a random sample as units are selected from Mr. Lee’s math class which is bias selection.

Option (B) is incorrect as Carlin take a survey of all students of 1st period and it might be possible that they are math's student.

Option (c) is a random sample as Cafeteria has every type of student.

Option (D) is also incorrect as the sample is biased.

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An airplane flies 56 miles due north and then 33 miles due east. How many miles is the
choli [55]

Answer:

65 miles

Step-by-step explanation:

using the Pythagorean theorem:

56²+ 33² = d²

d² = 4225

d = 65 miles

8 0
2 years ago
Square ABCD has side length a. Half circles with
Inga [223]

The area of the shaded region is 0.215a^2

<h2>Area of composite objects</h2>

The area of the shaded region is expressed according to the formula:

  • A = A_s - A_c

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As = a²

A_c = \pi (0.5a)^2\\&#10;A_c = 0.785a^2

Take the difference in the areas

Area of the shaded part = a^2-0.785a^2\\&#10;

Area of the shaded part = 0.215a^2

Hence the area of the shaded region is 0.215a^2

Learn more on area of composite objects here: brainly.com/question/22716761

7 0
2 years ago
Please help this is due
Kaylis [27]

Answer:

it's either A or B so try B

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
During a sale, $2 bars of soap were sold of a rate of 3 for $5. How much is saved on 9 bars ?
ANTONII [103]

You saved $12.6

3 divided by $5 = 0.6

0.6 x 9= $5.4

9 x $2 = $18

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3 0
3 years ago
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Given: If the basketball player makes the shot, then the team will win the game.
rodikova [14]

Answer:

if the basketball player makes the shot, then the team will advance to the playoffs (option d)

Explanation:

statement a is incorrect because the reverse of a statement is not always true. for example, all girls are humans but not all humans are girls. as such, we do not know that if the basketball player does not make the shot, the team will not win the game.

statement b is also incorrect, and uses a similar line of reasoning as statement a.

statement c is incorrect as well, and also uses the same reasoning as statements a and b.

statement d is correct. the reasoning used here is that if [x], then [y]. if [y], then [z]. thus, if [x], then [z].

i hope this helps! :D

7 0
3 years ago
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