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Sav [38]
2 years ago
5

I NEED HELP PLSS. The athletic director of a large school district with about 1,500 seventh-grade students in five different mid

dle schools wants to know which sport is most popular among seventh graders. Which survey method is the best to use?
A
Survey 50 randomly selected seventh-grade students at each of the district’s middle schools.

B
Survey 50 randomly selected seventh-grade students at one of the middle schools.

C
Survey 50 randomly selected seventh-grade students who are participating in school sports this year.

D
Survey 50 randomly selected eighth-grade students who participated in school sports last year.
Mathematics
1 answer:
telo118 [61]2 years ago
6 0

Survey 50 randomly selected seventh-grade students at each of the district’s middle schools. Then the correct option is A.

<h3>What is a sample?</h3>

A sample is a group of clearly specified components. The number of items in a finite sample is denoted by a curly bracket.

The athletic director of a large school district with about 1,500 seventh-grade students in five different middle schools wants to know which sport is most popular among seventh graders.

The survey method is the best to use will be

Random sampling is the method of selecting the subset from the set to make a statical inference.

Survey 50 randomly selected seventh-grade students at each of the district’s middle schools.

Thus, the correct option is A.

More about the sample link is given below.

brainly.com/question/350477

#SPJ1

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In Littletown, the probability that a baseball team goes to the city playoffs is 0.30. the probability that the team goes to the
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THIS IS THE COMPLETE QUESTION BELOW;

In Littletown, the probability that a baseball team goes to the city playoffs is 0.30. the probability that the team goes to the state playoffs given that the team goes to the city playoffs is 0.20.

What is the probability that a randomly selected team from Littletown goes to the city and state playoffs?

A. 0.10

B.0.50

C. 0.66

D. 0.06

Answer:

OPTION D is correct

d)0.06

the probability that a randomly selected team from Littletown goes to the city and state playoffs is 0.06

Step-by-step explanation:

The probability that a baseball team goes to city playoffs is 0.30.

P(baseball team goes to city playoffs)=0.30

The probability that the team goes to state playoffs given that the team goes to the city playoffs is 0.20.

P(team goes to state playoffs given that the team goes to the city playoffs)=0.20

From our knowledge of set, we know that

P(A | B)= P(A ∩ C)/P(C)

where A= city playoffs

B= state playoffs

P(State play off | city play off)=0.20

P(State play off ∩ city play off)/P(city play off,)=0.20

P(State play off ∩ city play off)/0.30 =0.20

P(State play off ∩ city play off)= 0.30 × 0.20

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The first thing we must do for this case is find the scale factor.
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