Answers-Quiz 5- MATH 2300 -Spring2011

# Answers-Quiz 5- MATH 2300 -Spring2011 - MATH 2300 ’ Quiz...

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Unformatted text preview: MATH 2300 ’ Quiz # 05 A mswerg , Find the mean/standard error of the sampling distribution of the proportion. 1) Assume that 26% of students at a university wear contact lenses. We randomly pick 300 students. Describe the sampling distribution model of the proportion of students in this group who wear contact lenses. popudaxiaw v‘mf‘o‘tkOt-ﬂ : F : Z6] : 0‘26 Sawﬂc 3.52 z: negoo gawpl'ma ci"\$‘\.‘r’.iam"k'v0w 03 gaw‘mz ?Ya?ov Lows magma : P; O'Zé' S'bméavé Q“\’3( 7 H Provide an appropriate response. 2) The body temperatures of adults have a mean of 98.60F and a standard deviation of 060° F. Describe the center and spread of the sampling distribution of the sample mean for a random sample of 75 adults. populatiovx mew, : f4: 3g.{._, pofmiaklom Skanciﬁvé ®v5a¥0m r \T‘ : 0:6 Sawp‘a. 5:3: :- vt :- \$5 Sawplmzs Aié’krilou‘k’oov‘ ox Sawvh Wan \xms CQn’ka :2) MMA:/M‘Z 59T65‘é 5&3w gar er5{ 7 , 3) Assume that blood pressure readings have a mean of 120 and a standard deviation of 8. If 100 people are randomly selected, find the prpbabili that their mean blood pressure will be greater than 122. /”:‘2° Tag V (a; 7&2) : x” ii‘ > RM“) bl. Nepm a 5.6A O’g , lair/ml prewar-e. 05 ; Y ('2 7 23> L:M:L (ll/um». N; r, l” (2425) 0 2.5 Big Cﬁnk‘q“ ,2” x awmwr ’0’ 0" WW” .2, t.» 0-8338 \$3 bu ‘6 0‘“ a“ r 5 @0062 W23» ’/ z 4) In 2006, the General Social Survey asked 917 respondents "how much do you favor or oppose requiring car makers to make cars and trucks that use less gasoline?" Their responses are given in the table below. Based on these responses, find a point estimate faring “population proportion whokei‘ther strongly favor or‘favor’ requiring car makers to make “mu-mu»— » “WM w» ma»- >.¢'~M,»gv.« mammawsu t, _ ., WM.“ .. . a ( ,,,;‘;,‘1,~W“NW¢W, cars and trucks that use less gasoline. ? DY Nquer m5 peiopv, who 22%,,v Emma\g Savor or 0Can : €645 4' 33:} :1 ["2 Strongly Favor Favor Neither Favor nor Oppose Oppose Strongly Oppose "team at? Pop/A Qﬂ‘wak (SM n“ YQVMVVOM (We’ve: \fxom ;5; «UN Sé‘mgm (yrs ‘30: ¥1OM [301\$ 93"“er '45 VA; 333; oral? : 0’52. a“? «3W < 5) In a survey of 500 residents, 300 were opposed to the use of the photo—cop for issuing traffic tickets. Find a 95% confidence interval for the population proportion who are opposed to the use of the photo—cop for issuing traffic tickets if the standard error of the estimate is 0.022. Sawou ?Y‘"?0Y\;‘°"* r: : 0‘6 Sawgu 52%; z: m ’ 8S 7 Congiéﬁv‘cas "LV, \2, V23 8:»: {3013qu \1092 [Jim fﬁ‘rl‘ktoh 3'5, Vohwk QSX‘wM‘oAQ i £275 Cox/‘1) - a.) A r ' Hera, ? 4: ’SOKC) ) Skrnépré; QA’WY {s (p‘iemiaiu—cé EH 0.4, t OvaMWZt) “Wt ‘3”) (one f 0'04332> {we *oto‘Q—Z') ’ k» gamma XL: 5 3) (5 4‘" 0‘043 , 0'“ “0%) who. 0% Axis A SMACP,‘ Please Print Your Names ...
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## This note was uploaded on 08/04/2011 for the course MATH 2300 taught by Professor Staff during the Spring '08 term at Texas Tech.

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Answers-Quiz 5- MATH 2300 -Spring2011 - MATH 2300 ’ Quiz...

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