Secure h mathxl.com /Student/Player Homework aspx? homeworkld 4073145528lq uesti

Question

Secure h mathxl.com /Student/Player Homework aspx? homeworkld 4073145528lq uestionld 108lflushed false&cld; 42927468ucenterwin yes, Origin HP Sol boot Stat 201-50 Statistics Spring 2017 3/17/17 8:10 PM Save Homework: Homework 7 Recycle Bin Windows 10 HP PH HW Score: 57%, 11.4 of 20 pts Score 0 of 1 p 10 of 20 (13 complete Upgrade 7.2.17 Question Help A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 325 babies were born, and 260 of them were girls. Use the sample AudioWizard L4cla7420 Final data to construct a 99% confidence interval estimate of the percentage of girls born. Based on the result, does the method appear to be effective? Exam K p Round to three decimal places as needed. Mozilla The Hungry Gen Firefox Tid Google The Sims 3 statis Chrome Adobe Final Essay Reader XI Exam Enter your answer in the edit fields and then click Check Answer 1 part emaining Clear All Check Answer Spotify Shop for HP Screensho Supplies 30 Ask me anything screensh Screenshot (240-LI Screenshot (300 Screensh 8:10 PM 3/17/2017

Explanation / Answer

Here point estimate of proportion is 260/325=0.8

Now we need to find CI for 99% so z=2.58

SE (p)=sqrt(p(1-p)/n)=sqrt(0.8*0.2/325)=0.022

Hence Margin of Error=z*SE=2.58*0.022=0.057

So CI=p+/=E=0.8+/-0.057=(0.743,0.857)

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.