1.In a survey of 517 music teachers, 403 said early childhood education has a positive effect on musical ability.

a)Calculate a 98% confidence interval for the true proportion of music teachers who believe that early education has a positive effect.

b)Write a sentence that explains the interval from part a), using the numbers from part a).

2.From the previous problem, how many people should you survey if you want the 98% confidence interval to be accurate within three percent of the true value of p?