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Study Team Test Chapter 11
Short Answer
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2.
Joel owns 12 shirts and is selecting the ones he will wear to school next week. How many different ways
can Joel choose a group of 5 shirts? (Note that he will not wear the same shirt more than once during the
week.)
3.
An experiment consists of rolling a number cube. What is the probability of rolling
4? Express your answer as a fraction in simplest form.
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4. A person is selected at random. What is the probability
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a number greater than
that the person was not born on a Monday?
5
An erf oellerv has R nainfinos finm en artisf and rvill disnlev 4 from
left to right along a wall. In how many ways can the gallery select and
display the 4 paintiags?
6.
An experiment consists of spinning a spinner. The table shows the results. Find the ex+erimeutal
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that the spinner does not land on red. Express your answer as a fraction in simplest form.
Outcome
Freouencv
red
10
pumle
vellow
11
13
ID: A
7
-
Acircle is inscribed in a square with a side length of 4. If a point in the square is chosen at random, what
is fte probability that ttre point is in the square but not in the circle? You can leave the answer in terms
of pi.
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8.
A grab bag contains 3 football cards and 7 basketball cards. An experiment consists of taking one card out
of the bag; replacing it, and then selecting another card. What is the probability of selecting a football
card an<i then a basketbaii card?
9.
a spirit rally. The bag contains 8 black ribbons and 7 green ribbons. Lila
Jessica selects a ribbon at random from the remaining ribbons' What is
then
at
random,
selects a ribbon
the probabiiity that Liia seiects a biack ribbon and Jessica seiects a green ribbon? Express your answer as a
A bag contains hair ribbons for
fraction in simplest form.
10.
The table $ows the distribution of the labor force in the TJaited States n the year 2000. Suppose fllat a
worker is selected at random. Find the probability that a female works in the Industry field. You can
write
with sums ln it.
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Male
Female
3- 132.000
667"000
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25.056"000
8.004.000
Services
50.1 12.000
57.362.000
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:
grab bag contains 8 football cards and 2 basketball cards. An experiment consists of taking one card out
of the bag, replacing it, and then selecting another card. Determine whether the events are independent
or dependent. -f/hat is the probability of selecting a football card and then a basketball card?
A
12.
Randa is playing a board game. The players take turns rolling a pair of dice. On her next turn, Randa
must ro11 a 5 (the sum of the 2 dice is 5) to win the gamez but if she rolls doubles, she gets an exfa turn.
If
the probability of rolling a 5 is
i -d the probability of rolling doubles is i,
what is the probability
that Randa rolls either a 5 or doubles on her next turn? Express your answer as a fraction in simplest
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13. Find the probability of rolling
in simplest form.
a 5 or an odd number on a number cube. Express your answer as a fraction
100 people were asked if they favor the change, oppose the
change.
Of the 100 people surveyed, 50 are male and 37 oppose
aboutthe
change, orhave no opinion
-What is the probabiiity that a
the change in poiicy. Of the 37 who oppose the change, 25 are femaie.
randomly selected respondent to the survey is a man or opposes the change in policy?
14. In a survey about a change in public policy,
15.
eonstella.tiqes se made up of more tban one star. The ta.ble shows the number of sta,rs tlrat m&e up
ofthe data set.
m
med
various constellations. Fin< the
Constellation
Number of Stars in
IV.r
Ccnstellation
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Constellation 1
Constellation 2
Constellation 3
Constellation 4
Constellation 5
27
4l
48
27
40
an outfit everyday that consists of one top (shirt, T-shirt, or blouse), one bottom (pants or
skirt) and one scarf. Her wardrobe consists of a tan skirt, a pair of black pants, 2 T-shirts, one silk blouse,
I butron-down shirt, and a set of 3 scarves. F{o-w many different outfits can Louise piit together?
il6- Louise wears
a random sample of the number of days absent from school for five
students at Monta Vista High. Find the mean, the standard deviation, and variance of the data.
17. The data {1,5,8,5, 1} represent
18.
Numeric
EXTRA CREDIT
A group of4 students went to drink pearl tea and study at a local tea shop. The shop offers 12 different
-What is the probabiiity that at ieast 2 students or<iere<i the same flavor? Express
flavors of peari tea.
yoo, *r*"r as a decimal, and round to the nearest ten thousandths.
Response
19. EXTRA CREDIT
For any three events, A, B,
arrd C,
P(AorBorC): P(A)+P(B)+P(C)-PVnn-PAnq*P(Bf'\C)+P(Ar-lBr.lC;.Usethetabletofind
P(AUC).
Event
Probabilitv
P(A) P(B)
0.2 0.5
P(C)
0.2
P@nB)
P(AnC)
0.1
0.1
P@
nq
0.5
P@oB
0.8
nq