azzes/2634397/take Question 3 4 Sales data from a family-owned store shows that 78% of a random sample of 300 customers pay using a credit card. Compute the 95% confidence interval for the population proportion. Answer: to 0.73 to 94 0.73 to 82 0.82 to .93 O 72 to 84 Question 4 4 pts A researcher is interested to determine the average number of years new teachers remain in the classroom. A pilot study of 385 teachers showed a sample standard deviation of 8 years and a mean of 12 years. What is the 95% confidence interval estimate of the mean time new teachers remain in the classroom? Round your answers to the nearest whole number. 9 to 12 years 10 to 13 years . 11 to 13 years 6 to 12 years