2010-10-10_150612_week6lab_solution22

2010-10-10_150612_week6lab_solution22 - Math 221 Week 6 Lab...

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

View Full Document Right Arrow Icon
Math 221 **** Example Format **** Week 6 Lab Submitted by: (Insert Name) Part 1. Normal Distributions and Birth Weights in America 1(a) 37 to 39 weeks as mean is around 7.33 lb. 1(b) 40 weeks as mean is around 7.72 lb. 1(c) 28 to 31 weeks as mean is 4.07 lb. 2(a) 99.88%, Excel command used was NORMDIST(5.5,1.88,1.19,TRUE). 2(b) 43.83% 2(c) 4.66% 2(d) 2.75% 3(a) Above 8.7269, Excel command used was NORMINV(0.9,7.33,1.09). 3(b) Above 9.0853 4(a) 41.41%, Excel command used was NORMDIST(9,5.73,1.48,TRUE)- NORMDIST(6,5.73,1.48,TRUE). 4(b) 82.61% 4(c) 81.56% 5(a) 88.36%, Excel command used was NORMDIST(3.3,1.88,1.19,TRUE) 5(b) 5.03% 5(c) 0.01% Part 2. Age Distribution in the United States 1. 36.48 2. 36.21, Excel command used Average(). It is almost the same as the mean age in the United States. It agrees with the central limit theorem as it states that population mean should be equal to sample mean. 3. No, because histogram is not bell shaped. 4. Maximum value = 44.72 Minimum value = 28.14 Class width = (44.72-28.14)/9 = 1.85(after rounding up)
Background image of page 1

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

View Full DocumentRight Arrow Icon
Class Frequency relative frequency 28.14 - 29.99 1 2.8% 29.99 - 31.84
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/08/2011 for the course MATH Statistics taught by Professor Yusef during the Spring '10 term at DeVry Chicago O'Hare.

Page1 / 4

2010-10-10_150612_week6lab_solution22 - Math 221 Week 6 Lab...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online