Answer:
The answer is c.) 0.6 and 0.14
Step-by-step explanation:
Given population has a size of 320.
The proportion of population = 0.6
The mean of population, p = 0.6
The mean of sample, [tex]\hat{p}[/tex]= 0.6
Therefore [tex]\hat{q}[/tex] Â = 1 - [tex]\hat{p}[/tex] = 1 - 0.6 Â = 0.4
The sample size  = 12
Therefore the standard deviation of the sample,
[tex]s = \sqrt{\frac{\hat{p}(1 - \hat{p})}{n} } = \sqrt{\frac{0.6 \times 0.4}{12} } = 0.1414[/tex]
The mean and the standard deviation for a sample size of 12 are 0.6 and 0.14 respectively.
The answer is c.) 0.6 and 0.14
