2. People were polled on how many books they read the previousyear. How many sub

Question

2. People were polled on how many books they read the previousyear. How many subjects are needed to estimate the number of booksread the previous year within one book with a 95% confidence?Initial survey results indicate that = 17.6 books. A 95% confidence level requires _____ subjects. (Round up tothe nearest whole number as needed.) 2. People were polled on how many books they read the previousyear. How many subjects are needed to estimate the number of booksread the previous year within one book with a 95% confidence?Initial survey results indicate that = 17.6 books. A 95% confidence level requires _____ subjects. (Round up tothe nearest whole number as needed.)

Explanation / Answer

Given E=1, =17.6, =0.05, |Z(0.025)|=1.96 (check normal table) n=(Z*/E)^2 =(1.96*17.6/1)^2 =1189.974 Take n=1190

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---