In: Statistics and Probability
1.a. In a survey carried out at a famous water park, 28 children out of a random sample of 80 said that they used the water slide regularly. Find a 95 % confidence interval for the true proportion of all children at the water park who uses the water slide regularly. [4]
b. The owner of the water park found that 45 children out of a random sample of 100 said that they used the pool regularly. Find a 98% confidence interval for the true proportion of all children in the water park who uses the pool. [4]