Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
-
solve for r in the proportion.\\(\\frac{r}{20} = \\frac{18}{40}\\)
$r = 9$
-
1. 7 tenths 2. 1,000 ten - thousandths 3. 475 thousandths 4. 32 hundred…
1. $0.7$ 2. $0.1$ 3. $0.475$ 4. $0.32$ 5. $0.012$ 6. $0.2345$ 7. $0.03$
-
the table shows the movement of a stock for 30 randomly selected tradin…
### (a) Frequency Distribution: | Movement | Frequency | |------------|-----------| | Down | 12 | | No change | 2 | | Up | 16 | ### (b) Relative Frequency Distribution: | Movement…
-
review the details below. drawing on its importance as a symbol to the …
The Lincoln Memorial is a popular and meaningful monument for millions of Americans.
-
suppose a survey was conducted in which participants were asked to disc…
| Day | Relative Frequency | |-----------|--------------------| | Sunday | 0.100 | | Monday | 0.075 | | Tuesday | 0.125 | | Wednesday | 0.150 | | Thursday | 0.050 | | Friday | 0.3…
-
find the 56th percentile for the data shown below.\ \ | x |\ |-----|\ |…
17
-
11. seventeen and two tenths 12. sixteen and three hundred forty - five…
11. $17.2$ 12. $16.345$ 13. $1110.001$ 14. $44.3$ 15. $1.87$ 16. $1.0027$ 17. $2.008$
-
find the following for the data shown: 1\t11 16\t29 34\t38 39\t42 96\t9…
Round up to 2, select 2nd value: 16 Yes, that's correct. But wait, another way to calculate percentile rank is (number of values less than x + 0.5*number of values equal to x)/n *…
-
in a round - robin chess tournament, each player is paired with every o…
11 players
-
2. marcus paid $4.50 for ¾ pound sliced deli ham. what is the price per…
$\$6.00$ per pound
-
7. 8 tenths 8. 332 thousandths 9. 44 hundredths 10. 100 thousandths
7. $0.8$ 8. $0.332$ 9. $0.44$ 10. $0.1$
-
look at this set of ordered pairs: (20, 15) (1,11) (-1, 13) (20, 11) (0…
no
-
look at this table: x | 4 | 4 | 19 | 19 y | -1 | 17 | 19 | 5 is this re…
no
-
look at this table: x\t16\t-8\t11 y\t18\t19\t-3 is this relation a func…
yes
-
look at this table: | x | y | |----|----| | 9 | 9 | | -1 | 6 | | 13 | 0…
yes
-
multiple choice question choose the correct formula for the location, (…
The correct option is the first one: \( \boldsymbol{L_p=\frac{(n - 1)P}{100}} \) (the option with \( L_p=\frac{(n - 1)P}{100} \))
-
look at this set of ordered pairs: (2, 20) (1, 6) (19, 12) (12, 3) is t…
yes
-
calculate the 15th percentile of the data shown x 1.5 11.1 16.2 16.3 17…
method for the 15th percentile here is: - n=7, sorted data. - The position is $i = \frac{15}{100} \times 7 = 1.05$. - Since $i$ is not an integer, we round up to 2, so the 2nd obs…
-
multiple choice question \ ewline which of the following is not a measu…
O standard deviation
-
multiple select question select all that apply which of the following a…
A. One dot for each observation. B. Dots "piled up" for observations very close together. C. A horizontal line indicating the possible values of the data.
-
read the excerpt from the land, part 4. mitchell didnt say anything, an…
Paul's father
-
based on the boxplot above, identify the 5 number summary
6, 10, 12.5, 15, 18
-
multiple select question select all that apply what statements below de…
A. Histograms are more useful for large data sets B. Dot plots show the relative frequency of data values C. Dot plots are most useful for small data sets
-
multiple choice question what is the measure of position called below w…
The third quartile
-
l = 585.081 · \\frac{71}{360}
$\approx 10.95$
-
multiple choice question each of the following is a measure of position…
the standard deviation
-
find the first and third quartile for the data shown\ x\ 1.2\ 3.4\ 8.2\…
$Q_1 = 8.2$, $Q_3 = 27.6$
-
1 a box of granola weighs 24 ounces. a box of bran flakes weighs \\(\\f…
18 ### Question 2
-
when you create a dot plot, you do which of these operations? connect a…
The correct option is: Place a dot along a horizontal scale for each observation.
-
multiple choice question which of the following is true regarding dot p…
B. Dot plots do not lose the identity of individual observations
-
02/17/25, nf.4 classwork 2 student: class: date: 1. a box of granola we…
18 ### Question 2
-
2 jeff has practice 3 times this week. each practice is \\(\\frac{3}{4}…
B. $2\frac{1}{4}$ hours ### Question 3
-
the table shows a function. is the function linear or nonlinear? x | y …
linear
-
during one shift, the express lane clerk recorded how many times custom…
3 ### Second Sub - Question:
-
1) in each study, the data collected is what level of measurement? a) l…
1) a) Ordinal b) Interval c) Ratio d) Ordinal e) Nominal 2) a) Continuous b) Discrete c) Continuous
-
a frequency distribution table using data this list of 16 random number…
| Class | Frequency | Rel.Freq | |--------|-----------|----------| | 20-29 | 4 | 0.2500 | | 30-39 | 3 | 0.1875 | | 40-49 | 2 | 0.1250 | | 50-59 | 7 | 0.4375 |
-
which of the following equations relates y to x for the values in the t…
C. \( y = 2^x \)
-
this graph shows how the time required to screen - print a batch of shi…
1.5 minutes
-
the relationship between time worked and money earned for each person i…
Elimary would earn more money. She would earn $\$6$ more than Abundo. Abundo's rate of change: $\$8.75$ per hour Elimary's rate of change: $\$9.25$ per hour
-
choose the answer that means the same as the word flashed. think carefu…
B. method (assuming the second option is labeled B; if the original options have different labels, adjust accordingly, but based on the list, the second option "method" is the syn…
-
pizza general charges 10 dollars per medium pizza. what does the slope …
Each additional pizza costs 10 more dollars.
-
for each of the situations below, choose the action that will make the …
Add the number of bushels harvested on Saturday and the number of bushels harvested on Sunday.
-
find the following for the data shown: 1 10 21 45 50 51 53 54 67 83 99 …
### First Sub - Question: What is the percentile of the data value 67? Round to the nearest whole number. #### Explanation: To find the percentile of a data value, we use the form…
-
soraya wants to sign up for a gym membership at gym club premium. she n…
Soraya paid 40 dollars just to join the gym.
-
the line crosses the vertical axis at the point (0, 40). the vertical i…
0 months, she spent 40 dollars for her gym membership.
-
soraya wants to sign up for a gym membership at gym club premium. she n…
The slope means that after each additional month, Soraya spends 20 more dollars for her gym membership.
-
amina opens a savings account. she starts her savings account with 20 d…
20 A vertical intercept of 20 tells us that after 0 weeks, Amina had $\boldsymbol{20}$ dollars in her account.
-
the line crosses the vertical axis at the point (0, 20). the vertical i…
20
-
lesson check 1. tina has \\(\\frac{3}{5}\\) pound of rice. she will use…
C. $\frac{2}{5}$ pound ### Question 2
-
e. the graph shows a linear relation. a) what is the approximate value …
### Part 5 (Linear Relation Graph) #### a) When \( x = 1.5 \), find \( y \)-coordinate Assume the linear equation is \( y = mx + b \). From the graph, when \( x = 0 \), \( y = -2 …
-
amina opens a savings account. she starts her savings account with 20 d…
$(0, 20)$
-
amina opens a savings account. she starts her savings account with 20 d…
The point (3, 65) tells us that after 3 weeks, Amina had 65 dollars in her account.
-
section 2.2 - histograms, frequency polygons, and ogives question 11 of…
| Amount | Midpoints | |---------|-----------| | 7-13 | 10 | | 14-20 | 17 | | 21-27 | 24 | | 28-34 | 31 | | 35-41 | 38 |
-
tajiri opens a savings account. each week he adds the same amount of mo…
The point (0, 0) tells us that after 0 weeks, Tajiri had 0 dollars in his account.
-
a number machine uses a rule to change numbers. the table shows the res…
A. \( k + 12 = m \)
-
tajiri opens a savings account. each week he adds the same amount of mo…
30
-
section 2.2 - histograms, frequency polygons, and ogives question 8 of …
The frequency polygon is constructed by plotting the following points and connecting them in order, plus connecting to the x-axis at the start/end: (31.35, 0), (41.35, 5), (46.35,…
-
tajiri opens a savings account. each week he adds the same amount of mo…
The point (2, 30) tells us that after 2 weeks Tajiri had 30 dollars in his bank account.
-
tajiri opens a savings account. each week he adds the same amount of mo…
60 Tajiri has 60 dollars in his bank account after 4 weeks.
-
section 2.2 - histograms, frequency polygons, and ogives question 5 of …
A completed frequency polygon for the given data
-
problem 2 select the number line that represents $3 \\cdot (-6)$. you c…
The top number line (with three leftward arrows labeled $-6$ each, starting from 0)
-
for the following questions, the right hand box shows what you are tryi…
Question 1: Inputs: gas per mile driven (gal/mi), number of miles (mi) Action: use conversion factor Question 2: Inputs: total number of ball bearings, total weight in pounds Acti…
-
audrina is knitting a scarf for her sister. she knits 3.5 centimeters o…
After each **day**, the length of the scarf increases by 3.5 more **centimeters**.
-
m3|l5 introduction to linear relationships audrina is knitting a scarf …
| Number of days | Length of the scarf (cm) | |----------------|--------------------------| | 4 | 14 | | 6 | 21 |
-
in 1990, 28% of bicycles in a certain country had tires wider than 25mm…
2070
-
according to statistics, a person will devote 36 years to sleeping and …
The person will spend 8 years watching TV and 28 years sleeping
-
samara started drumming lessons and learns 4 songs each month. fill in …
| Number of months | Number of songs | |------------------|-----------------| | 7 | 28 | | 9 | 36 |
-
(a) construct a relative frequency distribution of the data. | response…
27.7 %
-
you found that the slope of the line is \\(\\frac{9}{2}\\). how could y…
4.5
-
you are working as a ta for a professor. you have just graded the quizz…
### Step 1: Organize the Data First, list out all the scores: 86, 75, 88, 89, 52, 61, 88, 75, 69, 79, 72, 91, 48, 24, 97, 55, 83, 86, 70, 84, 70, 78, 90, 90, 85, 78, 83, 65. ### S…
-
q. from your unit 1 review notes: in a class of 30 students, there are …
$\frac{19}{30}$
-
determine whether the variable given is qualitative - nominal, qualitat…
quantitative-continuous since this variable would yield numbers that measure
-
question 9 1 pts a politician is trying to campaign for the presidency.…
720 ### Question 10
-
the following are goals scored by a soccer team at each game in their r…
| Goals | Frequency | Relative Frequency | |-------|-----------|--------------------| | 0 | 3 | 0.12 | | 1 | 10 | 0.40 | | 2 | 6 | 0.24 | | 3 | 2 | 0.08 | | 4 | 2 | 0.08 | | 5 | 2…
-
determine whether the variable given is qualitative - nominal, qualitat…
qualitative-nominal since this variable would yield categories with no implied order
-
samara is knitting a scarf for her mom. she knits 4.5 centimeters of sc…
| Number of days | Length of the scarf (cm) | |----------------|--------------------------| | 2 | 9 | | 4 | 18 |
-
you are working as a ta for a professor. you have just graded the quizz…
### Part 1: Stem - and - Leaf Plot #### Step 1: Organize the data by stems (tens place) First, we list out all the scores: 45, 75, 75, 98, 90, 97, 55, 83, 76, 70, 84, 70, 75, 59, …
-
question 7 1 pts how many outcomes are there in the experiment in which…
s: ### Question 7
-
check answers button and read the concepts lesson. jason wants to calcu…
1. Jason's calculation: add 2. Erkan's calculation: use conversion factor 3. Barbara's calculation: make conversion factor 4. Chester's calculation: subtract (correct as selected)…
-
ages | number of students 15-18 | 10 19-22 | 3 23-26 | 2 27-30 | 10 31-…
20.5%
-
if you dont know what make a conversion factor and use a conversion fac…
1. add 2. divide 3. divide 4. subtract (already selected correctly) 5. multiply
-
thoughts on government (john adams) questions possible points: 10 what …
Adams means that debates over the "best" abstract form of government are a distraction pushed by tyrants (enabled by the Pope's statement). He asserts that the quality of a govern…
-
data was collected for 145 randomly selected 10 minute intervals. for e…
20
-
q. a bag has 5 red tiles, 4 yellow tiles and 3 green tiles. a tile is d…
$\frac{5}{36}$
-
question 5 1 pts if $p(a)=.35$, $p(b)=.45$, and $p(a\\cup b)=.8$, then …
Mutually Exclusive, Dependent ### Question 6
-
determine the distribution of the data pictured below frequency 30 25 2…
Skewed - right
-
during one shift, the express lane clerk recorded how many times custom…
3 ### Second Sub - Question: What is the frequency of the most frequent number of over - the - limit items?
-
question 3 1 pts suppose the 9 letters forming the word cafeteria were …
0.833 ### Question 4
-
during one shift, the express lane clerk recorded how many times custom…
8
-
question 2 1 pts suppose there are 12 marbles in a bag--3 blue, 5 red, …
AD, 6/132
-
question 1 1 pts suppose there are 12 marbles in a bag--3 blue, 5 red, …
BG, \( \frac{15}{144} \) (corresponding to the option BG, 15/144)
-
a bag has 3 red tiles, 1 yellow tile and 2 green tiles. what is the pro…
$\frac{1}{4}$
-
question 22 3 pts use percent proportion to solve. 1.24.94 is 29% of wh…
1. $86$ 2. $25$ 3. $\$70$
-
paul is comparing two high - speed internet service providers (isps) fo…
12 months
-
the graph represents a system of linear equations comparing the outside…
10 hours
-
batches of tomato sauce batches of salsa which statement is true about …
Mike can make 6 batches of salsa and 3 batches of tomato sauce using all of his garden produce.
-
the ratio of used books to new books in a bookstore is 2:9. check all s…
For every 2 used books in the bookstore, there are 9 new books.
-
coreys school is doing a jog - a - thon race to fundraise for their com…
| Number of miles | Donation in dollars | |-----------------|---------------------| | 1 | 18 | | 2 | 36 | | 3 | 54 | | 4 | 72 | | 5 | 90 |
-
now, find the slope, or the change in vertical distance for a given cha…
5
-
marissa wants to know how many points she scored in her teams last two …
1. Marissa: add 2. Principal: subtract 3. Susannah: use conversion factor 4. Justine: divide