{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

204 Exm3 sp10

# 204 Exm3 sp10 - Math 2040 Exam 3 spring 2010 Name SHOW YOUR...

This preview shows pages 1–3. Sign up to view the full content.

Math 2040 Exam 3 spring 2010 Name______________________________ SHOW YOUR WORK TO RECEIVE CREDIT 1) As given in the exam three review sheet, list two characteristics of the normal distribution (other than the empirical rule) _________________________________________________________________ _________________________________________________________________ 2) Assume that infants after a typical gestation period of 37 to 43 weeks have a normal distribution of birth weights with μ = 3432 grams and σ = 482 grams. a) Find the probability that a randomly selected full term (37-43 week) infant will have a weight above 4000 grams. __________ c) Find the probability that 11 randomly selected full term infants will have an average weight above 4000 grams. _________ d) Find the 5th percentile of the birth weights _________

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
3) A sub population of full term infants is thought to have birth weights below the average of the whole population. a) A sample of this sub population was taken with the following results: n = 14, x = 3127 grams , s = 423 grams. Find a 99% confidence interval for the average of this sub population. __________ b) What sample size should be taken to estimate the average of the sub population? (use maximum error = 200 grams with 95% confidence
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern