Question

choral conductor has 1923 singers in her choir, some of them are professional singers. The conductor...

choral conductor has 1923 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1923, so she instead asks 680 singers in front and finds 24 who are professionals.

(a) What specific type of bias does this scenario demonstrate?

A. It is representative of the population.

B. Voluntary response sampling

C. Convenience Sampling

D. None of the above.

(b) Identify the parameter

A. 24

B. percentage of entire singers who are professional

C. range of values in which 95% values fall

D. None of the above.

(c) Identify the statistic.

A. entire choir members

B. 24/680

C. 1923

D. None of the above.

(d) Identify the population

A. percentage of entire singers who are professional

B. entire singers

C. 24/1923

D. None of the above.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Answer:

  (a) What specific type of bias does this scenario demonstrate?

Ans:  Convenience Sampling ( Option C)

(b) Identify the parameter

Ans: percentage of entire singers who are professional ( Option B)

(c) Identify the statistic.

Ans:   24/680 (Option B)

(d) Identify the population

Ans : entire singers ( Option B)

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