stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
final exam review Flashcards | StudBud
Explore
/
final exam review
final exam review
20 terms
·
StudBud Administration
·
40 plays
probability and statistics review for final exam
Flashcards
20 cards
F
Practice quiz
P
Host live
L
Questions
20
Answers
1
If two events, A and B, are NOT mutually exclusive, which formula should be used?
P(A) P(B)
P(A) + P(B)
P(A) P(BIA)
P(A) + P(B) - P(A and B)
2
which formula: "Roll a die 10 times, find Probabliity of getting 2 sixes"
geometpdf ( 1/6, 2 )
binompdf ( 10, 1/6, 2 )
binomcdf ( 10, 1/6, 2 )
geometpdf ( 1/6, 10 )
3
If Ho is p = .3 and Ha is p < .3: We reject the Ho. Can we conclude that p = .3 is too high?
not enough evidence to conclude the claim is too high
it depends
yes
no
4
"n" is the symbol for:
standard deviation
size of the population
sample size
mean
5
The deciding factor to use the t distribution instead of the z distribution is
the sample size is small
the population standard deviation is not given
proportions are being used
the mean is given
6
If the Ho is p=.3 and we think this claim is too high, what is the Ha?
p
p > .3
p = .3
p is not = .3
7
The z score that cuts off the top 10% of the normal curve is
1.28
1.645
1.96
0
8
which data set has the smallest standard deviation?
1, 2, 3, 4, 5, 6
0, 0, 0, 10, 10, 10
5, 5, 5, 5, 5, 5
0, 2, 4, 6, 8, 10,
9
Which answer is FALSE: "All of the probabilities in a probability distribution must..."
be positive
add to 1
be a number between 0 and 1
be whole numbers
10
The difference between p and p-hat is
p-hat is the sample proportion
p is used to construct a confidence interrval
p is the sample proportion
p-hat uses the t distribution
11
In a difference in proportions confidence interval, if there is no difference
the interval will contain zero
the interval will NOT contain zero
the interval is invalid
the interval will contain both sample proportions
12
A __________________ displays the 5 number summary for a set of data
boxplot
bar graph
stemplot
ogive
13
In probability, the word "and" generally implies which operation?
addition
subtraction
multiplication
division
14
Name a difference between a binomial situation and a geometric situation.
first success on nth trial
fixed number of trials
independence
success vs. failure
15
In a two sammple z test for the ddifference in means, the Ho always says
the sample means are different
the population means are different
the sample means are the same
the population means are the same
16
Find the z score: The raw score is 5, with a mean of 10 and a standard deviation of 5
5
1
1 / 2
-1
17
A categorical graph which always displays the percentages of a whole is
stemplot
pie graph
bar graph
histogram
18
Another name for the median is
the mode
the second quartile
the mean
outlier
19
In probability, the word "or" generally implies which operation?
addition
division
subtraction
multiplication
20
Find the area to the left of z = 1.5
-..0668
.5000
.0668
.9332
