Question

# (S 9.1) Determine the minimum sample size required in order to estimate p, the population proportion,...

(S 9.1) Determine the minimum sample size required in order to estimate p, the population proportion, to within 0.03, with:

a) 95% confidence.

b) 99% confidence.

#### Homework Answers

Answer #1

We have p is unknown therefore, consider p=0.5, q=0.5

We can use here,

a) 95% confidence.

Z critical value for 95% confidence level is 1.96

=1067.11

Therefore,the minimum sample size required in order to estimate p, the population proportion, to within 0.03, with 95% confidence will be 1068

b) 99% confidence.

= 1849

Therefore,the minimum sample size required in order to estimate p, the population proportion, to within 0.03, with 99% confidence will be 1849

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