The Kennel Club Wants to Estimate the Proportion of Children

The Kennel Club wants to estimate the proportion of children that have a dog as a pet. Assume a
95% level of confidence and that the club estimates that 30% of the children have a dog as a pet. If
The club wants the estimate to be within 3% of the population proportion, how many children would
They need to contact?

A) 978
B) 879
C) 789
D) 987
E) 897