统计与概率
数据分析、概率分布、假设检验与统计方法。
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it was found in 2010 that 19% of high school seniors were smoking cigar…
There is not enough evidence at the \(\alpha = 0.05\) level to support the researcher's concern that the percentage of high - school seniors who are smoking/ vaping nicotine is hi…
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randall walker, a researcher, believes blood pressure will change with …
False for the first question. A. below for the second question.
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suppose the monthly charges for cell phone plans are normally distribut…
(b) C; (c) \(0.8413\)
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the graph of a normal curve is given. use the graph to identify the val…
The value of $\mu$ is $530$ and the value of $\sigma$ is $15$.
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the graph below represents the result of a survey in which a number of …
3
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the graph to the right is the uniform probability density function for …
(a) \(0.083\) (b) \(30\)
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read the following passage from anne franks the diary of anne frank and…
B. She holds hope in human goodness despite living in hiding.
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the graph below represents data that was collected by students on the n…
5 posts
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the graph below represents results of a survey in which students stated…
24 students (assuming the last option is "24 students" as it's partially visible and matches the sum)
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use the table to answer the question. a popular word game starts with 1…
$\frac{21}{50}$
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use the table to answer the question. a popular word game starts with 1…
B. 42
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use the table to answer the question a popular word game starts with 10…
D. 100
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what is the definition of simile? (1 point) the use of exaggeration for…
a comparison between two unlike things, using the words "like" or "as"
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(4 points) 3. a student surveyed 100 adults who took either vitamin c, …
a. \(27\%\) b. Approximately \(26.79\%\) c. Approximately \(19.23\%\)
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read the text. even before the start of world war ii, several countries…
- The German military used Enigma → The Polish Cipher Bureau broke the code. - The German military used Lorenz SZ40/42 → Colossus broke the code. - The Japanese military used Purp…
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which of the following explanations would describe the meaning of the e…
B. Rodney has $70 in his savings account. He collects $100 for two lawns that he has mowed at $50 each. After Rodney deposited the money collected into his savings account, he has…
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points) 2. kiran collects data about the number of trees on property of…
a. The data points are closely clustered around an imaginary line (showing a consistent pattern). b. As the number of trees increases, test scores tend to increase. c. Correlation…
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a library loans out 3 books every day for a week and no books are retur…
C. The change in the number of books at the library over the course of the week was $- 21$.
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(4 points) 2. kiran collects data about the number of trees on property…
a. The data points are closely clustered around a line of best fit. b. As the number of trees on school property increases, student standardized test scores also tend to increase.…
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(4 points) 2. kiran collects data about the number of trees on property…
a. The data points are closely clustered around a line (showing a consistent pattern in their relationship). b. As the number of trees increases, test scores also tend to increase…
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(4 points) 2. kiran collects data about the number of trees on property…
a. The data points are closely clustered around an imaginary line. b. As the number of trees increases, test scores tend to increase. c. Correlation does not imply causation. Ther…
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twenty years ago, a very famous psychologist specializing in marriage c…
Lower limit: $0.78$ Upper limit: $0.86$
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a sociologist is studying the prevalence of crime in one major city. in…
Lower limit: $0.27$ Upper limit: $0.37$
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which evidence supports the conclusion that the grimms fairy tales were…
B. Some of the tales discuss wars and other conflicts of the time. C. Many of the stories tell about the horrifying and brutal treatment of children. E. The tales often reveal the…
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suppose that 320 out of a random sample of 400 letters mailed in the un…
Lower limit: $0.75$ Upper limit: $0.85$
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the gazelles are a professional soccer team based in a large city. at t…
(a) Sample proportion: \( \hat{p}=0.52 \) (b) Population proportion: \( p = 0.43 \)
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the plush zoo store sells stuffed animals. the store is running a speci…
(a) Population proportion: \(p = 0.18\) (b) Sample proportion: \(\hat{p}=0.34\)
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the scatter plot shows the theater revenue and rental revenue for each …
(a) increase (b) a positive (c) \(10.1\) million dollars
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the scatter plot shows the years of experience and the amount charged p…
(a) For these 24 dog sitters, as experience increases, the amount charged tends to increase. (b) For these 24 dog sitters, there is a positive correlation between experience and a…
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the scatter plot shows the weight and fuel efficiency for each of 25 ve…
(a) decrease (b) a negative (c) 30 miles per gallon
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which action would gandhi most likely embrace as a means of change? par…
participating in a hunger strike
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a shirt is randomly drawn from a bag with 14 small shirts, 19 medium sh…
0.53
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use the aleks calculator to solve the following problems. (a) consider …
(a) \(0.883\) (b) \(2.093\)
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use the aleks calculator to solve the following problems. (a) consider …
\(P(-1.95 < t < 1.95)=0.936\)
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use the aleks calculator to solve the following problems. (a) consider …
a. \(P(-1.95 < t < 1.95)=0.949\) b. \(c = 1.314\)
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use the aleks calculator to solve the following problems. (a) consider …
(a) \(P(t\leq1.89)=0.950\) (b) \(c = 2.110\)
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use the aleks calculator to solve the following problems. (a) consider …
\(P(-1.93 < t < 1.93)=0.786\)
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which of the following best defines the term \symbolism\ as used in har…
d. A representation of ideas or concepts using symbols to convey deeper meaning.
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suppose z follows the standard normal distribution. calculate the follo…
(a) \(0.962\) (b) \(0.839\) (c) \(0.233\)
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a t distribution with 6 degrees of freedom is graphed below. the region…
\(0.080\)
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key figures of the harlem renaissance included langston hughes, zora ne…
Countee Cullen; jazz; dried - up vine; Cotton Club; swing
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a study was conducted to determine if age was a factor in how many dail…
A. \(y =-\frac{4}{9}x + 11\)
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the scatter plot above shows the number of pages read compared to the n…
A. \(y = 20x\)
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adam has the scatterplot shown for his data set, where snowfall is meas…
C. As the amount of snow decreases, the number of accidents increases.
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the scatterplot shows the relationship between the number of texts a st…
D. The closeness of the data points
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the scatterplot shows the relationship between the number of texts a st…
C. black
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a t distribution with 11 degrees of freedom is graphed below. the regio…
\(- 1.998\)
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clive created the scatter plot shown. clive finds that the line of best…
C. The slope of the line of best fit would increase because the point lies below the original line of best fit.
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a zoo adds new animals. 20 are s, 34 are zebras, 12 are elephants, and …
\(0.71\)
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a car dealership has a full car lot. 19 are red, 22 are blue, 7 are whi…
\(0.56\)
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a group of students enter a baseball gam14 students buy a hotdog, 10 st…
The probability that a student did not buy nachos is \(\frac{3}{4}\) (or \(0.75\)).
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a group of students enter a baseball game. 14 students buy a hotdog, 10…
\( 0.75 \)
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a coffee shop sells regular coffee in three sizes. the table shows the …
bajo: \(\$1.62\); mediano: \(\$1.80\); grande: \(\$2.03\) (Option C)
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which statements accurately define archetypes? select three options. th…
- B. They convey universal meanings and shared human experiences. - C. They are universal symbols found in literature. - E. They can include characters, plots, settings, objects, …
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read the two passages. passage 1 the need for standardized testing in e…
Passage 1 uses empirical evidence, while passage 2 uses logical evidence.
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literary devices authors technique: the literary devices an author uses…
symbolism
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read the excerpt from \daughter of invention\. \ya, ya\ she waved them …
B. She does not want to dwell on something that cannot be changed.
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7 strategies for decoding word meaning *use context clues to formulate …
beautiful
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roots and affixes some common affixes: prefixes in - also il -, im -: n…
Validity is a quality of being accurate or valid.
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excerpt from \the great gatsby\ by f. scott fitzgerald the interior was…
his "spiritless" demeanor
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read the excerpt from \daughter of invention\. \maybe not. maybe, just …
D. Slow and steady wins the race.
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read the excerpt from \daughter of invention\. \maybe not. maybe, just …
A. Anything can be accomplished.
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what does \in favor of\ mean in this sentence? it was the favorite choi…
People thought it was a good idea.
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question 15 of 15 match the type of distribution map in column 1 with t…
Religious distribution map: Places where different religions dominate Population distribution map: Population density in different parts of a territory Ethnic distribution map: Et…
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a spinner is divided into equal parts as shown below. find the probabil…
\(\frac{1}{2}\) (corresponding to the option with \(\frac{1}{2}\))
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the movement of the progress bar may be uneven because questions can be…
D. There are more data points in the upper two quartiles than in the lower two quartiles.
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which of the statements below is true for the following set of numbers?…
The range is larger than the midrange.
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the movement of the progress bar may be uneven because questions can be…
The first bar graph (the one with “Lunches Sold in October” title, lunch types on the x - axis, and “Number Sold” on the y - axis, showing Deli Sandwich at 300, Hamburger at 500, …
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the movement of the progress bar may be uneven because questions can be…
The first bar graph (the one with "Number Sold" on the y - axis and individual lunch types on the x - axis, with Deli Sandwich at 300, Hamburger at 500, Pasta Plate at 400, Pizza …
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the movement of the progress bar may be uneven because questions can be…
The third bar graph (middle right) with “Number Sold” on the y - axis, showing Deli Sandwich (~300), Hamburger (~500), Pasta Plate (~400), Pizza (~650), and Soup Combo (~150) (the…
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probability and relative frequency: foundations the table shows the num…
A. 89
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the following data represents the pounds of celery each person consumes…
\(y\sim0.015x^{2}+0.236x + 1.943\)
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the following data represents the amount of time algebra ii students at…
\(y\sim0.007x^{2}+0.394x + 45.389\); score of 84
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fill in the blank. when determining whether there is a correlation betw…
scatterplot
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percentage of population supplied by water supply industry a census was…
70
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the scatter plot and trend line show the average income, in dollars, in…
C. On average, each $1 increase in average income was associated with a $0.031 increase in average rent.
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why is it important to be extremely careful when completing your 1040 f…
The 1040 form determines whether you owe or are entitled to a refund
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the daily profit of a bicycle store can be modeled by $f(x)=x^{3}-5x^{2…
\(g(x)=x^{3}+7x^{2}+10x - 6\), The shop makes the same profit after selling 4 fewer bicycles.
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fill in the blank. a is a characteristic used in anova that allows us t…
treatment
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tyler filled up his bathtub, took a bath, and then drained the tub. the…
At the moment Tyler began filling the bathtub (0 minutes after starting), the depth of the water in the bathtub was 0 inches (the tub was empty). ### Part b
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lizs math test included a survey question asking how many hours student…
C. On average, studying for one extra hour was associated with a 15 point improvement in test score.
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the scatter plot and trend line describe the relationship between the a…
D. The model indicates that 1 - bedroom apartments in New York had an average rent of approximately 800 dollars in 2000.
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the type of line used to indicate that values on the line are not inclu…
dashed (or broken) ### 2. Second Question
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the scatter plot plots the relationship between hours spent on video ga…
D. The model indicates that students who spent 0 hours on video games will average approximately 23 hours spent on homework.
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the scatterplot shows data on the percentage, p, of 18 - to 24 - year -…
A. About 22% of 18 - to 24 - year - olds were enrolled in a degree - granting institution in 1965.
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when does rising action occur? a. after the climax b. before the climax…
1. b. Before the climax 2. c. To give the story meaning
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which of the following was a major difference between the occupations o…
Only the occupation of Wounded Knee resulted in the deaths of several people.
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in greek, the word utopia means highest everywhere an ideal place the m…
1. "an ideal place" 2. the Church and survival 3. Geocentric
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hals hostel has 25 rooms. the histogram shows the distribution of the n…
C. 6
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data representations: foundations google classroom microsoft teams the …
40
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the graph shows the relationship between the kinetic energy of a baseba…
C. 90
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mandarin: a global language today, around fifteen percent of the people…
Accessibility to online Mandarin learning resources does not support why people should learn it.
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sharon wonders what pets the students at her school prefer. so, she pla…
Sharon assigns a number to each student. She uses a computer to randomly pick 20 of them to ask. At Sharon's school, every student is in a science class. Sharon asks 2 students ch…
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the dot plot shows the number of hours, to the nearest hour, that a sam…
The 5th - grade mean is \(5\). The 7th - grade mean is \(4\). The 5th - grade median is \(5\). The 7th - grade median is \(4\).
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read the passage. the debate over whether online friendships can rival …
C. While in - person friendships have unique benefits, online friendships can be equally meaningful.
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sule will spin this spinner once. what is the probability that she will…
\(\frac{5}{6}\)
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read the sentence. when cotton clothing is permeated, or soaked through…
saturated
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test content page 23 of 25 question 23 the “place” component of the mar…
A. Distribution and delivery
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you will spin each of these spinners once. how many outcomes are possib…
12
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read the excerpt from mark twains memoir, life on the mississippi. i wa…
It is hyperbole that means the author’s eyes were wide with fear.