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Nesterboy [21]
2 years ago
11

Maridel wants to find out how many of her classmates plan to come to the next football game. There are 800 students in her schoo

l. She selects a sample of the population by putting the names of every student into a bag and drawing out 100 names. Which statement(s) describe her sampling method? Check all that apply. Her method will produce a biased sample. Her method will produce a valid sample. Her method will produce a random sample. Her method will produce a representative sample. Her method will produce an invalid sample.
Mathematics
2 answers:
OverLord2011 [107]2 years ago
8 0

Her method will produce a valid sample.

Her method will produce a random sample.

Her method will produce a representative sample.



VLD [36.1K]2 years ago
4 0

Answer:

2nd, 3rd and 4th options are correct.

Step-by-step explanation:

There are 800 students in her school. Maridel selects a sample of the population by putting the names of every student into a bag and drawing out 100 names.

Her sampling method is random and valid. As she has not chosen the names of students based on some order or preference, she has chosen completely random names.

So, the statements that describe her sampling method are:

2. Her method will produce a valid sample.

3. Her method will produce a random sample.

4. Her method will produce a representative sample.

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13,8%

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There are six employees and six cheks, so there are 36 (6x6) possible combinations so if we need to measure the probability that five of them receive the exact check  is only one for each one of them over the 36 possibilities, so 1/36 for one plus 1/36 the second and so on.  5/36 = 13,8%.

3 0
1 year ago
mary is preparing for her college entrance exams. in a practice test, she answered 12 problems in 30 minutes. at this rate, how
mariarad [96]
12 problems = 30 minutes
24 problems = 60 minutes
36 problems= 90 minutes
48 problems = 120 minutes
60 problems = 150 minutes 

Mary can respond 60 problems in 2 hours and 30 minutes/ 2 hours and half/ 150 minutes.

Hope this helps xx
3 0
1 year ago
Read 2 more answers
The diagram shows two objects made of the same kind of glass. At left, a 3 dimensional figure labeled X with 2 triangular sides
Likurg_2 [28]

Answer:

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Step-by-step explanation:

6 0
1 year ago
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If sin(x) = 1/3 and sec(y) = 25/24 , where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities
Dominik [7]
<span>sin(x-y) = (24-14*sqrt(2))/75 Write down what you know sin(x) = 1/3 sec(y) = 25/24 cos(y) = 1/sec(y) = 24/25 cos(x) = sqrt(1-sin(x)^2) = sqrt(1-1/9) = sqrt(8/9) = 2*sqrt(2)/3 sin(y) = sqrt(1-cos(y)^2) = sqrt(1-576/625) = sqrt(49/625) = 7/25 We now know the sin and cos of both x and y. Now to get the sin of x-y. sin(x-y) = sin(x)cos(y) - cos(x)sin(y) Substitute the known values for sin and cos of x and y, then evaluate and simplify sin(x-y) = (1/3)(24/25) - (2*sqrt(2)/3)(7/25) sin(x-y) = 24/75 - 14*sqrt(2)/75 sin(x-y) = (24-14*sqrt(2))/75</span>
5 0
2 years ago
The present age of nitin is two times the present age of his sister pooja. After 7 years their ages will add to 68 years. Find t
svlad2 [7]
N=2p

(n+7) + (p+7) = 68

2p + 7 + p + 7 = 68

3p + 14 = 68

3p = 68 - 14 = 54

p=54/3=18

n=2p=36

Check: (18+7)+(36+7)=25+43=68  good



7 0
1 year ago
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