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ivolga24 [154]
3 years ago
10

Identify the sampling method as simple random​ sampling, systematic​ sampling, convenience​ sampling, or stratified sampling. A

computer randomly selects 500 names from a list of all registered voters. Those selected are surveyed to predict who will win the election for Mayor.
Choose the correct sampling technique below.

A. Systematic sampling
B. Convenience sampling
C. Simple random sampling
D. Stratified sampling
Mathematics
2 answers:
shusha [124]3 years ago
4 0

Answer: C.

Simple random sampling

Step-by-step explanation:

A simple random sample in statistics, is a subset of individuals chosen from a larger set. Each individual is chosen randomly and entirely by chance, such that each individual has the same probability for the entire larger set.

Marysya12 [62]3 years ago
4 0

Answer:

C

Step-by-step explanation:

The computer randomly selects 500 names without any bias, Thus, it is simple random sampling because each name has equal chance of getting selected.

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The probability of none will have high blood pressure if twenty percent of Americans age 25 to 74 have blood pressure .If 16 ran
andriy [413]

Answer:

The probability that none will have high blood pressure is 0.0281

Step-by-step explanation:

The correct question is as follows;

Twenty percent of Americans ages 25 to 74 have high blood pressure. If 16 randomly selected Americans ages 25 to 74 are selected, find each probablility. a. None will have high blood pressure

This is a binomial problem. We shall solve in that line

The probability of success is 20% or 0.2 [(Americans ages 25 to 74 have high blood pressure)] p = 0.2

The probability of failure q is thus 1-p = 1-0.2 = 0.8

The probability of none is thus;

P(X= 0) = 16C0 p^0 q^16

= 16C0 * 0.2^0 * 0.8^16 = 0.0281

8 0
3 years ago
What is the estimated mean absolute deviation of the population? {76,67,80,83,79,76,76,82,82
Valentin [98]
You can't really say the absolute deviation of the population to me but if you wanted to you could
3 0
3 years ago
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I'm not sure if D is right
Rzqust [24]
Ratio and proportion

height :legnth of shadow=56:49 (man's shadow)
we assume the ratio is the same for the tower thing (obelisk)

so
56:49=x:28
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56/49=x/28
times both sides by 28
1568/49=x
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5 0
2 years ago
The greatest integer that satisfies the inequality 1.6−(3−2y)<5
Cerrena [4.2K]

Solve the inequality 1.6-(3-2y)<5.

1. Rewrite this inequality without brackets:

1.6-3+2y<5.

2. Separate terms with y and without y in different sides of inequality:

2y<5-1.6+3,

2y<6.4.

3. Divide this inequality by 2:

y<3.2

4. The greatest integer that satisfies this inequality is 3.

Answer: 3.

6 0
3 years ago
joan is rolling a six— sided numbers cube with 1—6 on the sides. what is the probability that she will roll a numbers less tha 3
Ulleksa [173]
1/3 because only 1 and 2 is less than 3 out of the 6 numbers. 2/6 = 1/3.
4 0
3 years ago
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