In a survey, Damian found that 75% of the total number of teenagers surveyed like pop music. If 150 teenagers like pop music, wh
2 answers:
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Check the attached file for the solution.
Answer:
a) the sample size (n) = 156.25≅ 156
Step-by-step explanation:
<u>Step1 </u>:-
Given the two sample sizes are equal so
Given the standard error (S.E) = 0.04
The standard error of the proportion of the given sample size
Step 2:-
here we assume that the proportion of boys and girls are equally likely
p= 1/2 and q= 1/2
squaring on both sides, we get
on simplification, we get
n= 156.25 ≅ 156
sample size (n) = 156
<u>verification</u>:-
Standard error = 0.04