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IM 7 Unit 8 Probability and Sampling Flashcards | StudBud
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IM 7 Unit 8 Probability and Sampling
IM 7 Unit 8 Probability and Sampling
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Probability questions for statistics class.
Flashcards
33 cards
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Practice quiz
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Questions
33
Answers
1
Ava surveys students at a movie about their favorite activity. She determines most like movies. Best conclusion?
valid because surveyed a large number
not valid because only surveyed students
valid because surveyed people at a movie
not valid because she surveyed at a movie theater
2
Find the range
86
2
5
34
3
An event with a probability of 0.1 ...
is certain to occur.
is not very likely to occur.
is very likely to occur.
cannot occur.
4
The MAD tells us how much variability is in our data
False
True
5
What is the probability that a number less than 7 will appear when you roll a die one time?
1/2
1/6
1
0
6
If I toss a fair coin twice and get TT, what is the probability that tails appears next toss?
0
1/2
1
2/3
7
You flip a coin and chose letters from the alphabet. What is the probability of getting a tails and choosing a vowel?
None of these.
21/26
5/26
5/52
8
Which of the following experiments does
NOT have equally likely outcomes
?
Toss a coin.
Choose a number at random from 1 to 7.
Choose a letter at random from the word SCHOOL.
9
If an event is
certain to occur
, it has a probability of zero.
True
False
10
What is the probability that you draw a
diamond
from a well-shuffled deck of cards?
0
1/13
1/4
1/2
11
Masoon will collect data to find out where the 7th grade students should take a field trip. Which is the best data?
10 random people from 7th grade
twenty of his friends
all students in a dance class
First 25 students in lunch line
12
Which is a measure of center?
Median
Mode
IQR
Range
13
You roll two dice. What is the probability of rolling a number
greater than 4 at least once
?
1
27/36
20/36
24/36
14
Two dice are rolled. What is the probability that the sum is 12?
1/12
1/6
1/36
0
15
You roll a fair six-sided die once. What is the probability of getting an
even number
?
1/3
1/2
1/6
0
16
You flip a coin and draw a card from a standard deck. What is the probability that you get a heads and draw an
ace
from
0
1/104
4/104
8/104
17
Joy surveys kids leaving GAP to determine what brand kids like best. Which best explains why her results are not valid?
survey conducted only by Joy
Survey should have been conducted online
group surveyed were only kids
the group surveyed were all at GAP
18
A women has three sons. What is the probability that her next child will be a girl?
1/8
1/4
1/2
0
19
What is the theoretical probability that you draw a
red
card from a shuffled deck of cards?
0
1/4
1/13
1/2
20
Given a bag with 12 red and 7 green marbles, what is the odds of randomly selecting a
red
one?
1/2
12/19
7/19
7/12
21
I toss a penny, a nickel, a dime and then a quarter. What is the probability I get all heads or all tails?
1/8
None of the these
14/16
2/16
22
If the probability of an event happening is ¼, then the probability of it not happening is ¾.
False
True
23
Find the Median
30
40
35
41
24
If an event is
impossible
, it has a probability of zero.
True
False
25
What is sample space, S?
The area where samples are.
The favorable outcomes of an event.
The total possible outcomes of an event.
26
Two coins are tossed. What is the probability of getting two heads, P(HH)?
1
1/4
0
1/2
27
Find the Mean
40
41
35
32
28
What is the Mean Absolute Deviation?
average distance from mean
average of the data
median of the data
median distance from mean
29
What is the median?
2
24
19
53
30
On a single roll of a standard die, what is the probability that a 3 will NOT appear?
0
1/6
3/6
5/6
31
What is the probability of rolling a number
greater than 4
?
1/3
1
0
1/2
32
Which is a measure of center?
Mean
Range
Medium
Mode
33
Find the MAD
9
8
7
10
