quiz1_sol

quiz1_sol - Raquel Prado Name Applied Mathematics and...

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Unformatted text preview: Raquel Prado Name: Applied Mathematics and Statistics * AMS—7. Winter 2008 Quiz 1 In “Tobacco and Alcohol Use in G—Rated Children’s in Animated Films,” by Gold— stein, Sobel and Newman (Journal of the American Medical Association, Vol. 281, , No 12), the lengths (in seconds) of scenes showing tobacco use were recorded for animated movies from Universal Studios. Six of those times are listed below. QQQI3512%SGB 0, 223, 0, 176, O, 548 a) (15 points) Determine the mean of the sample. L t' 3? : O + 113 +0 + (Urea—O + 5 48 ._ .14". .1513?) e e ' -b) ' (15 points) Determine the mode of the sample. 0 c) (10 points) Determine the ﬁrst quartile of the sample (Q1). 0-0 0 I46 125 546 ._) KPOS = 2 -5 : 15X 6 _ 1,5 :7 WOUﬂolén up -— (P6 100 ‘ D :7 at": O l __._.__.... d) (10 points Determine the econd quartile of the sample (Q2 or median). (Q —:_ I l l/lMM—ﬂq (9g e) (10 points.) Determine the third quartile of the sample Qaro F r905 : 7523093 .2 4.5 :1) Qog : b :D i Q?) ﬁll?) l' Applied Math and Statistics 2 Quiz 1 AMS-7. 'f) (25 points) Please indicate whether the following statements are true (T) or false (T) If the largest measure is 1700 instead of 548 the mean increases. If the largest measure is 1700 instead of 548 the mode increases. The interquartile range is 111.5. ( ( ( (T The range is 548. F) F) If the largest measure is 1700 instead of 548 the, median increases. F) ) 2. (15 points) Two students take equivalent stress tests. Which is the highest relative score? a) A score of 144 on a test with a mean of 128 and a standard deviation of 34? b) A score of 18 on a test with a mean of 15 and a standard deviation of 5? 0;)Il'7w9corc : M4416 : 0647+ 34 Lb) ‘1—scoce —: News” t 9—:056 ‘ 5 5 "The: 1% 'swcc \‘5 beta Sx‘ﬂcc: it is 0.6 5.01.5 above: +5: Mean whﬂe +\r\€ 144 Score ‘55 onlka 0'4} 5&3 alooqa mt’féﬂ . ...
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This note was uploaded on 01/31/2010 for the course AMS 7 taught by Professor Prado,r during the Winter '08 term at UCSC.

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quiz1_sol - Raquel Prado Name Applied Mathematics and...

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