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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the movement of the progress bar may be uneven because questions can be…
C. immature
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26/84 match the following central tendencies vocabulary with the defini…
- Mean: average - Mode: occurs most - Median: middle # - Range: biggest # minus smallest #
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there is a 60% that your math teacher will give a pop quiz tonight and …
A. do your homework as the probability is \(0.40>0.05\) (where \(0.40\) is the probability of no pop - quiz (which is a condition related to the decision, and if we assume doing h…
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michelle draws a card from a standard deck of 52 cards. she replaces th…
A. \(\frac{1}{16}\)
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the movement of the progress bar may be uneven because questions can be…
A. low temperature
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the movement of the progress bar may be uneven because questions can be…
A. a person who eats or uses something
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1. choose the best answer. what is the primary means of communication t…
B. media
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21/84 solve for w: j = 4w note! it means isolate w. what do you need to…
B. 0.25 (assuming the second option is labeled as B, if the options are labeled as A: - 1/4, B: 0.25, C: - 0.25, D: 4)
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it turns out this regression equation accounts for 66.1% of the variabi…
As total number of runs allowed increases by 100, we predict total number of wins to go down by 10 (answers may vary slightly based on the exact points chosen on the regression li…
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the movement of the progress bar may be uneven because questions can be…
B. plants that swivel to face the sun (assuming the second option is labeled B; if the original options had no labels, but based on the order, the second option is "plants that sw…
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3. choose the best answer. what is a wrongful but not criminal act that…
a tort
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it turns out this regression equation accounts for 66.1% of the variabi…
As total number of runs allowed increases by 100, we predict total number of wins to go down by 10. (Note: The values can be adjusted based on a more precise calculation of the sl…
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value: 2 which of the following facts is not true about data? a. data i…
A. Data is some random numbers
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value: 8 match the description with the respective statistical quantity…
a. 2. Median b. 4. Range c. 1. Mean d. 3. Mode
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what is the purpose of the first paragraph of this section of the iroqu…
A. to describe the meaning of the shell strings
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what heuristic estimates the probability of something occurring based o…
availability
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the mean length of utterance (mlu) decreases with age. please select th…
F
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finish times (to the nearest hour) for 10 dogsled teams are shown below…
20
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finish times (to the nearest hour) for 59 dogsled teams are shown below…
The histogram is drawn with class intervals on the x - axis, frequency on the y - axis, and bars with heights corresponding to the frequencies (4, 9, 26, 17, 3) for the classes 23…
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a survey of 1,565 households estimated that 72% of the households in a …
all the households in given state
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read this example of incorrect sentence structure. heavy, black clouds …
Heavy, black clouds rushing in from the horizon mean a storm is coming.
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read the excerpt. select the correct answer and press the submit button…
C. full of energy
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select the correct answer. which statement describes an example of logi…
C. a speaker’s conclusion based on statistics about local businesses
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question a mathematics teacher wanted to see the correlation between te…
29
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study the cartoon by signe wilkinson. how does satire create meaning in…
D. The turkey heading for slaughter asking about health care critiques current healthcare systems.
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one spring day, dalvin noted the time of day and the temperature, in de…
63 degrees Fahrenheit
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town officials want to estimate the number of households that own a dog…
(a) 50 households are randomly selected from the town; 16 own a dog. (b) 144
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from the squatter and the don by maria ruiz de burton the squatter and …
D. The author uses dialogue to speed up the pacing.
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excerpt from message to the congress in special session, july 4, 1861 b…
- to guarantee that every state continues to have a republican form of government, as promised by the Constitution - to preserve a government dedicated to giving each citizen a fa…
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edit a verb, if necessary, to make sure the sentence is in the future t…
Next week, Drax will explain the meaning of those blinking lights.
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find the z value that corresponds to the given area in the figure below…
-0.76
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in the data set below, what is the mean absolute deviation? 2 3 9 4 4 5…
$1.7$
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the graph below shows a line of best fit for data collected on the dail…
B. $y = 6x - 30$
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which statement best describes the interquartile range of this set of w…
the difference between the second and fifth elements of the set as it is written above
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apply 14. multiselect select the numbers that are part of the set of ra…
\(-\frac{11}{\sqrt{9}}\), \(\frac{\sqrt[3]{-4096}}{\sqrt{16}}\), \(0.333\cdots\) ### Question 15
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congress in a flash help the historian. someone has found an early copy…
1. (Section 2 questions) 1. The House of Representatives 2. Representative 3. 25 4. Citizen 5. When elected, the person must live in the state they represent. 2. (Section 3 questi…
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the scatter plot shows the relationship between the number of chapters …
18 chapters (corresponding to the option "18 chapters")
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which set has the greatest range? {10, 14, 8, 19, 22, 13, 44} {19, 16, …
\(\{12,6,24,20,44,15,29\}\)
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rosa’s work finding the median of a set of test scores is shown below. …
She should have reordered the elements from least to greatest.
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swati played eight basketball games this season. her point totals for e…
\(8\)
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what is the range of this set of heights in centimeters? {140, 166, 132…
\(50\)
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what is the difference between the mean and the median of the data set?…
0
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two basketball players average the same number of points per game. what…
the most and least points each player has scored in a game
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select the correct answer and press the submit button. in this excerpt,…
C. full of energy.
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ty and gage are both football players who averaged 4 yards per run in y…
The lengths of Gage's runs have greater variability because there is a greater difference between his longest and shortest runs.
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jada is studying the variability of her quiz scores. which pair of stat…
range and interquartile range
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solve for w: j = 4w note! it means isolate w. what do you need to do to…
0.25 (or \( \frac{1}{4} \), but among the options, 0.25 is the correct choice for the operation on the coefficient to isolate \( w \))
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the number of pages read by two students each day for 5 days are listed…
- The means for both data sets are equal. - The range of the number of pages that Lionel read is 75.
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read this excerpt. king philip told young alexander that his kingdom is…
D. He saw that Alexander was wise and strong and could rule a much greater country.
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daily pizza sales thin crust deep dish 110 120 130 140 150 160 what is …
130
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the movement of the progress bar may be uneven because questions can be…
D. unforgivable (assuming the options are labeled A - D as: A. fearful, B. painful, C. unbearable, D. unforgivable)
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complete each statement. luis practiced 1.5 hours on day 1. over the fi…
\(2.25\)
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the movement of the progress bar may be uneven because questions can be…
A. dressmaker
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complete each statement. luis practiced 1.5 hours on day 1. over the fi…
\(2.25\)
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complete each statement. luis practiced \\boxed{} hours on day 1. | day…
1.5
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make a line graph of this data set. describe why a line graph is more a…
Explanation Format
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10/84 what is the mean? biggest-smallest the number in the middle the a…
C. the average
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4. the table shows the record low temperatures in degrees fahrenheit fo…
a. Maine has the colder record low temperature because -50°F < -45°F. b. -80°F (Alaska's record low) is colder than -40°F (Arizona's record low). c. Hawaii, Florida, Arizona, Cali…
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follow the steps below to construct a 90% confidence interval for the p…
(a) Sample size:17, Point estimate:6.875, Sample standard deviation:2.012, Critical value:1.746 (b) Lower limit≈6.02, Upper limit≈7.73 (c) Yes, the confidence interval contradicts…
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their nearest polling station. then state whether the confidence interv…
(a) Sample size: 24, Point estimate: 4.864, Sample standard deviation: 2.421, Critical value: 2.069 (b) Lower limit ≈3.84, Upper limit≈5.89, Point at 4.64 (c) No, the confidence i…
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which sentence describes the relationship shown on this scatter plot? n…
As the temperature increases, the number of visitors increases.
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height in inches what data value is the upper quartile (q3)? 58 66 64 62
64 (corresponding to the option with 64, e.g., if the option is C. 64, then C. 64)
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what data value is the upper quartile (q3)? 58 66 64 62
66
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the movement of the progress bar may be uneven because questions can be…
D. having no equal
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follow the steps below to construct a 99% confidence interval for the p…
(a) Sample size: 16; Point estimate: 5.496; Sample standard deviation: 1.873; Critical value: 2.947 (b) Lower limit≈4.116, Upper limit≈6.876 (c) No, the confidence interval does n…
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walking dog: $y = 100x$ buying groceries: $y = 50x + 200$ what does the…
(4, 400) After 4 minutes walking her dog or 4 minutes buying groceries, Aliyah will have taken 400 steps.
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the movement of the progress bar may be uneven because questions can be…
those who are in favor of something
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part b one student will be selected at random from the class. consider …
D. The events are not independent because the probability of \(X\) is not equal to the probability of \(X\) given \(Y\).
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abc company what represents the x axis? amount earned in dollars hours …
C. Hours Worked
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3. the table shows the lowest elevations in meters of several places wi…
a. $-2.4 > -86$ b. Lake Champlain's lowest elevation (28 meters) is higher than New Orleans' lowest elevation (-2.4 meters). c. Badwater Basin in Death Valley, California; New Orl…
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(a) click on \take sample\ to see the results from your random sample o…
(a) Sample size: 35, Point estimate: 5.52, Population standard deviation: 2.15, Critical value: 2.576 (b) Lower limit: ~4.58, Upper limit: ~6.46 (c) Yes, the confidence interval c…
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use the information provided to answer part a and part b for question 1…
D. \(\frac{23}{30}\)
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only five minutes until showtime, people!\ called mrs. kseniya to the c…
B. The tension and haste backstage cause Nancee to act rashly.
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based on your sample, follow the steps below to construct a 95% confide…
(a) Sample size: 32; Point estimate: 4.65; Population standard deviation: 1.68; Critical value: 1.960 (b) Lower limit ≈ 4.07, Upper limit ≈ 5.23 (c) Yes, the confidence interval c…
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on the spinner shown, all of the sections have the same size. what is t…
$\frac{3}{10}$
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on the spinner shown, all of the sections have the same size. what is t…
$\frac{1}{4}$
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constructing a confidence interval to test a claim about the population…
(a) Sample size: 40; Point estimate: 4.47; Population standard deviation: 2.91; Critical value: 1.645; Standard error≈0.461; Margin of error≈0.758; 90% confidence interval≈(3.71,5…
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written in 1863, five weeks in a balloon is a fictional account of thre…
A. by showing distinct reactions to a potential threat
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definition the value of a digit depending on its position in a number. …
2. Place Value
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for problems 10–15, use >, <, or = to compare the rational numbers. 10.…
10. < 11. > 12. > 13. < 14. < 15. < 16. The New York bank vault (elevation -50 feet) is at a lower elevation. On the number line, -50 is to the left of -10, meaning it is farther …
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read the problem. six players on the sluggers baseball team are pitcher…
The purple bar model (with 25% labeled as 6 and "?" at 100%). Total players: 24
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the average number of moves a person makes in his or her lifetime is 12…
0.0021 0.9979
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read the problem. there were 450 travelers on a flight to orlando, and …
The blue model, 360 travelers
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1. consider $-1 < -\frac{1}{2}$. jada says this inequality means egativ…
1. Both Jada and Scott are correct (since $-1 < -\frac{1}{2}$ is equivalent to $-\frac{1}{2} > -1$) 2. -2 3. -7 4. -3.64 5. $-\frac{201}{100}$ 6. False 7. False 8. True 9. True | …
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records from a toy manufacturing company showed that the mean time that…
$H_0: \mu = 40$ $H_1: \mu < 40$
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choose whether the following statement is true or false. ella le está h…
False
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suppose that you decide to buy a car for $26,635, including taxes and l…
\(398.22\)
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suppose that a certain car has the following average operating and owne…
\(28800\)
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a small town that encompasses 12 square miles has 3,000 residents. what…
C. 250
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what does the root cred mean in the word credulous? mary often fooled h…
believe
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what does the phrase throw down the gauntlet mean? despite the teams po…
to challenge another team
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question 10 (multiple choice worth 2 points) (0.0% mc) read the followi…
To calm or lessen
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read each question and choose the best answer. what did educator john d…
B. that their education should go beyond memorizing basic facts
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what is the correct meaning of the word circumnavigate? she took the ch…
travel around
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what does the root form mean in the word formulate? the town council wi…
shape
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what is the correct meaning of the word unaccustomed? the foreign excha…
not familiar
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what is the correct meaning of the word yearning? desire chance idea pl…
desire
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independent practice: structure words to study (write the word) leisure…
- For "leisure": d. What relaxing day - For "picturesque": a. tourist attraction - For "plethora": b. extensive - For "thrive": d. a blossoming city - For "unique": b. a person’s …
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what is the meaning of the prefix sub- in submarine? the people watched…
under
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what is the correct meaning of the word liable? the contract stated tha…
responsible