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Math 317 — Exam 3: Spring 2013 TR Name: Show all necessary work. Circle answers where appropriate. 1. Miss p, . a ‘43) \_ QQWI L \d 1‘ J r:- 3? collects amaryllis plants. She has 85 amaryllis plants in her garden with characteristics as follows?
plants have stripes, 45 plants contain the color red, ~.L9’plants have spots in the center 15 plants are striped and contain the color red, Wants have spots in the center, but do not have any red or stripes, amnts have spots in the center and also have @stripes, and
\la/plants have spots and stripes. A) Draw a Venn diagram to represent this situation. B) How many plants have none of the three properties?
1 6 2. A survey of students at Southland Academy revealed the following information about their participation in
academic clubs. How many students: ﬂ 5 ‘ I A) were surveyed? “f Science
KY" L/ Club
B) participate in debate and science club? Ox:
(1 U.
C) participate in exactly one academic club? “2 D) do not participate in science club? ” {\ In M. E) participate in literary or science club, but not debate? '1);- F) If a student at Southland Academy is chosen at random, what is
the probability that the student participates in: i t; l t I ‘rr - - I r I A J p.
i) literary club but not science club? 4 i ii) science club given they particrpate 1n debate?<razg g Q iii) debate or literary club? ‘ch l lid _. ' 3. A class of 25 students has an average weight of 120 pounds. The average weight for the 11 girls in the class is A) What is the average weight for the boys 1n the class? K ‘ .x C, 1 F, ,..~—-—— :
0d [I X \I Q“. ' ,_ lb \ of it my!» int ', I g I ,:
to- \| ' a a ‘ a ‘ WW- w <- e I _ )- 5. l 8 i) ' r '” Etﬂrtv" 30 DJ“. ‘0 -' O" ‘ l?) 3/6 if - g t)" .5. .’
. ../ . \_. .1 a ., l B) If the two highest weights of 145 and 141 pounds are removed, what rs the average 0 the re ng‘ _ weights? s .3 J1 r J. K - .54. if), A 7 4. For the set of whole numbers, let Squares = the set of all perfect squares, Three = 1the set of all multiples of
three, and Factor = the set of all factors of 360.
A) On the Venn diagram below, shade the region which B) State three numbers, one for each of the
represents the set of all perfect squares which are three striped regions shown labeled below. factors of 360. n. if r\_4__,.r - ,1-
A) $12.13) it ‘.andc) ‘2): 5. A survey of households with only one pet revealed the following where ‘i‘r represents 3 households.
Family Pets A) How many households were surveyed? 4p “1‘ MM“ B) What fraction of the households have a ﬁsh? 0g 6. State whether the following types of data are quantitative or qualitative. If quantitative, state whether
discrete or continuous. Furthermore, if you were to ﬁnd the average for a set of data of that type, which
average (mean, median, or mode) would be most apprOpriate‘? Type of Data Quantitative or
Qualitative A) the number of steps you climb in a day 1 . 1, B)the make ofacar if; C) the amount of time in the grocery
check—out line ~ 7. For each sequence below, state whether the sequence is arithmetic or geometric, then ﬁnd a formula for each
one. Use your formula to ﬁnd the tenth term of each sequence. \ 1% A C) The ratio of cats to dogs is IL:- r Li) D) What percent of the households have a dog? 7‘) :5 t A) 7,3,-1,-5,... B) 4,12,36,108,...
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__{__=;=7"_* : A? ‘ \‘l C
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l \l 1 it J L 0 8. A surve of 120 students enrolled in a Math class ielded the followin information. an min r tie:
Fill in the blanks below, then draw the pie chart at right. .\ /
Qﬁﬂg mogul Angle measure
A “la. 77' B lid-Cl!!- U03 lo:
F ‘51,- €~°5 . P5 5 —.l-.—....._..— I
R ' 9. The test grades for 20 students in a science class are:
84’ /775 89 62’ $8" 100 '70/ «68‘ %5 '- $3” I, 73’ 19/ 427 are“ 5% s1” 96" .72” «35 as ‘ A) Find the mean. Give answer to 1 decimal place. Mean = L 1;) Find the median. I _, . - ’f" I _ ' e,
C) Find the mode. ' Mode = 9 £1
- ives the wei 10. The following table _ ht of last month’s newborns at a hospital. — A) Draw a histogram at right, and ...

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