class notes0006

class notes0006 - IPHY2800 PRACTICE QUESTIONS AND EXAMPLES...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: IPHY2800 PRACTICE QUESTIONS AND EXAMPLES FOR LECTURES 8 & 9 ~hich of the following would LEAST likely result in norm.allY.diStribu.ted data? ~ge of 5000 individuals when suffering first heart attack (-J ~ Ie -e \A...; B. Heights of 5000 ten year old boys ~ 5 0 , ) ' ) ' e o . Do e e \J (2. ¥l d \ S 4 C. Number of pull-ups done by 5000 sixteen year old boys - S o , j Y e c.~ Cj ( l D. Percent fat of 5000 sixteen year old girls '. s Yv (' ,:", (J' 2. Which of the following would be the MOST representative sample? ~iased,N=100 Jk Biased, N=1000 .C. Unbiased, N=1O ~nbiased, N=20 3. Which of the following represents the WORST performance? A. Percentile rank of 49 V\A' d d \ e . ,e -;;. ( i) f .. B. Stanine score of 5 VVI' d c l ~ 'Z- <;, @T-scoreof39 D. z score of -0.8 / / / ~ . ., is.) ''.:J. ,<;(0'(" 4. Given the following information, what is the 99% confidence interval containing the population mean? X = 60, S = 14, N = 49 C5<6 ' (fliT) A. 59.26-60.74 CoO±),' ~...~ @4.84-65.16 qq I-4 2 \~e . c. 56.08-63.92 . D. 44.84-55.16 For the following problems assume the data are normally distributed )(=75 S=9 N=36 , , 5. What is the z score ofa raw score of80? 'i?0- l 5 = 5/'"1-=_,55; 10 z. t S 0 ~ fZO~3) 6. What is the T-score for a raw score of87?~7- 1 S ::. 12../'1 - I :s;;; ,:::. I ! 3-;>,) " SO L.__ 7. What is the percentile rank for a raw score of 82? 1 '8 8. What is the standard error of the mean? 1.5 9. What is the 95% confidence interval containing the mean of the population from which this sample was taken? l ? ±. It. q (0) (\.5) 10. What is the 95% confidence interval containing the population mean ifthe sample size had been 25 instead of36?-, c:> t ( \ .q lJ){ I .< i.) ZSCD'(L. ._ .•. _--_._-_ .. _- LA 2.D 3.e 4. B 60 'r2.58(147\Gi9) 5.0.55 (80-75)/9 6.63 50 + 10(87-75)/9 7.78 z =-1.82-75)/9= .77 use TableAl 8. 1.5 9/136 9.72.15-77.85 75:1.96(1.5) 10. 71.47-78.53 75~ 1.96(9/5) likely to be negativelyskewed must be unbiased,bigger is better ===~===--~==- =r-+~~1J=:~~~~)=---s~~-==== _. . • __ ,__ ._. ~_~._. ._______-- . ._~_. . . • __ ~ . •_ ._ .•. __ '0'-' , • ,._. ,' ,.____________ _ _ 0)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ - - - - - - - - - - _ x--~-7' 119 ~-- L?ZC---- ----~- ~ -~ --_ ._ --_ ._ - , _ .. _._., .-----~ . '._-- ---------_._ . • _ .---- . _ - - - - _ . , - _ . __ . _------.-._ . _ .----,--- - - - - - .-- - - - - ,'- - - - - - - - - - - .'- ._,_. "_._--------_.~----------_._--_._---_._-_._------.-----'-'-----~ --" " " ' ~ - -------------------------s-t-r}b-+;;-~x~------t-n--=-f~------------------------------ -------T7 CCi-----------r-C/T---- ------- - ------------------ -------TcTO/Z----------T-~-- -------------- ----------f-vr-cr-----------~17--- ----------------------- -- ---I7dj~ ~--------y;~--- ------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
View Full Document

This note was uploaded on 04/03/2009 for the course IPHY 2800 taught by Professor Decker,mik during the Spring '08 term at Colorado.

Page1 / 36

class notes0006 - IPHY2800 PRACTICE QUESTIONS AND EXAMPLES...

This preview shows document pages 1 - 4. Sign up to view the full document.

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