_ ' I , - - - : . , ' = Homework: Sectlon 6.3 Homework Questlon 10 6 3 20 T > HW Score 92 86A: 18 of 14 pomts Part 2 am @ Points: 0.33 of 1 A researcher wishes to estimate, with 99% condence, the population proportion of motor vehicle fatalities that were caused by alcohol-impaired driving. His estimate must be accurate within 4% of the population proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 28% of motor vehicle fatalities that were caused by alcohol-impaired driving. (0) Compare the results from parts (a) and (b). (a) What is the minimum sample size needed assuming that no prior information is available? n = 1031 (Round up to the nearest whole number as needed.) (b) What is the minimum sample size needed using a prior study that found that 28% of motor vehicle fatalities that were caused by alcohol-impaired driving? n = (Round up to the nearest whole number as needed.) Help me solve this View an example Get more help A @ Clear all