SOLUTIONS Open Book Exam 1 Practice Problems(1)

SOLUTIONS Open Book Exam 1 Practice Problems(1) - 50 Sample...

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Unformatted text preview: 50 Sample Exam 1 Open-Book Problem 1 A workplace study was conducted to evaluate the weight that can be safely lifted from the floor by the workers. Five males aged 18— 30 were used 111 the study, and the weight (kg) they could successfully lift 13 given below. Use these data to test the suggestion that the weight that can be safely lifted exceeds 25 kg. W ' h k I Worker filgl On Q 5-ka #111154! (On/e "+?\Cl€cl 2 36.6 3 26.3 .. 4 35’ [z 4 21.8 " f 5 27.2 H... M .9 “By QS.3~+....~+97.;1 x" 5 2 97.5% 1, _ J (as.3+....+;27;)9‘ 33* Q9.st+...,+;27.;1 -— ,_ 1 W71; :1 M ”)I’éh .8: L“ :QMQB SW SW 51 Sample Exam 1 Open-Book Problem 2 Tennis elbow IS an orthopedic condition thought to be related to the force experienced when hitting a tennis bal1. An article 1n the International Journal of Sport Biomechanics presented the force (in Newtons) experienced after impact for six advanced and eight intermediate players. Test to see if advanced and intermediate players experience the same force. Assume the data are normally distributed. Force Experienced g :11 \{Mi NICE Radio +851 Advanced Intermediate 3. 3.1 44.70 15.58 Ho: 0‘ V =1 51.1. 26.31 _ 19.16 H 31 ‘ } 55.75 24.13 a 6M :19- {'31 28.54 10.56 H “‘“ ‘ 46.99 32.88 39.46 21.47 14.32 __ 33.09 X = 40.3 X = 21.4 s: 11.3 s = 8.3 S =la75 s"=é‘5.‘7 n=& 01% DF=S DF:7 Tine $4531.: £42551 Ger-14:16.1) [137. 5(5) +osa(7)][¢, if ‘5 +7 (ax-’13 (450811), 1} 7* 2.1761 (0.003-<1D<O.60§> 1 (eject #0 advanced Clex iniflmmtak ’iénnc {Dim/m do A51 fireman: ’HM 5W #5th 52 Sample Exam 1 Open-Book Problem 3 It has been suggested that birds use color to select or avoid certain foods. In a project to determine if birds prefer certain colors, 33 one-day-old quail were placed into a cage with a white floor. In the floor were four pins, one with a blue head, one with a green head, one with a yellow head, and one with a red head. The color of the pin chosen on the bird’s first peck was noted for each of the 33 quail. 16 of the quail peeked at blue, 8 peeked at green, 6 peeked at yellow, and 3 peeked at red. Test for a color preference using these data. Mil W W (Zr-lb Hot \Ql lLLQ' %(€£A \Jfillow Cock Ems We, PCCl‘ieGl m a l l.‘ )‘I JULPV blm- 306a» yellomfieak fms meta. and packed Ln 6,, lull‘flle‘l‘b 54 Sample Exam 1 Open-Book Problem fi 4 A recent study was conducted on cooperative hunting behavior in lions. Lionesses cooperate by approaching prey in groups. (Male lions don't help much; they lie around and wait for the females to bring them food.) A group of lionesses approaching potential prey tends to form a loose line configuration. The researchers could identify two positions along the line: (1) Center — near the middle of the line; or (2) Wing - near the end of the line. The researchers also determined the role of each lioness in the capture attempt. The two possible roles were: (I) Initiate Chase - be the first to charge the prey; or (2) Participate in Chase - join the chase after it had started. Of 76 lionesses in the Center position, 28 were classified as Initiate Chase, while 48 were classified as Participate in Chase. Of 107 lionesses in the Wing position, 66 were classified as Initiate Chase, while 41 were classified as Participate in Chase. Is the role of the lioness independent of position along the line? Cen‘tnsmzs Tet}: Ho: (“0'va O'f'l'l’lfl llfinffj I} :flwe’lden‘l’ U‘p‘ Pogh‘la'ofl alorljk+’l\{ flax Pm: (ole a? ‘lhaltlmzsl dapexdfi 0/" Fusilfl'km ale/5 'WQ lion ...
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