Prekindergarten studies has proved to be very effective for children. To illustrate its
effectiveness, a study was carried out in Fiji and it was found that 73% of prekindergarten
children ages 3 to 5 whose mothers had a bachelor’s degree or higher were enrolled in centerbased early childhood care and education programs. This could also be of other obvious
reasons. How large a sample is needed to estimate the true proportion within 3 percentage
points with 95% confidence? How large a sample is needed if you had no prior knowledge of
the proportion?
Answers
Prekindergarten studies has proved to be very effective for children. To illustrate its
effectiveness, a study was carried out in Fiji and it was found that 73% of prekindergarten
children ages 3 to 5 whose mothers had a bachelor’s degree or higher were enrolled in centerbased early childhood care and education programs. This could also be of other obvious
reasons. How large a sample is needed to estimate the true proportion within 3 percentage
points with 95% confidence? How large a sample is needed if you had no prior knowledge of
the proportion?
Step-by-step explanation:
A sample size of 1000 will be required in order to achieve results that have 95% margin o error as 3%.
There exists an inverse relationship between the margin o error and the sample size.
The greater the sample size,the smaller the margin of error.If we wish to reduce the margin of error,we will increase the sample size beyond the one thousand.