Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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using the empirical rule... 29. the mean speed of a sample of vehicles …
Since the problem is not clearly stated[SSE Completed, Client Connection Error][LLM SSE On Failure]
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identify the type of observational study (cross - sectional, retrospect…
A. A prospective study
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what is the meaning of inception as used in the text? location formatio…
formation
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in a study of all babies born at hospitals in one state, it was found t…
D. The value is a parameter because it describes some characteristic of a population.
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-1 206 13.7 20.6 27.5 2 261 17.4 26.1 53.5 3 173 11.5 17.3 70.8 4 131 8…
1. Most respondents (66.7% of non - missing) watch TV for a small number of hours daily (e.g., 7 or fewer hours account for 95.0% of non - missing cumulative percentage). 2. There…
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a study of an association between which ear is used for cell phone call…
- Percentage of returned surveys: 14% (it appears to be low). - Problem with low response rate: C. It creates a serious potential for getting a biased sample.
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in the venn diagram, ( x ) means: a {c, d, e, f, g, h} b {b, c, f, e} c…
D. \(\{a, d, g, h\}\)
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these events and reenactments went on for about four hundred years befo…
C. remove
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in a study designed to test the effectiveness of a medication as a trea…
A. The group sample sizes are all large so the researchers could see the effects of the treatment.
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23 how do the spreads of each data set compare? bar graphs for 10th gra…
B. The spreads are about the same
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identify which of these designs is most appropriate for the given exper…
completely randomized
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a magazine ran a survey about a web site for downloading music. readers…
A. The sample is a voluntary response sample, so there is a good chance that the results do not reflect the population.
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word study anglo-saxon suffix: -some a. directions: select the word in …
### Part A Solutions: 1. **Explanation for Question 1**: - Step 1: Analyze the meanings. "Wholesome" means healthy or good, "meddlesome" means interfering. The sentence is about t…
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5 from unit 1, lesson 2 the data set represents the responses, in degre…
s: ### 5a: Dot Plot - Horizontal axis: Temperatures (92, 95, 98, 100, 103, 105, 111, 112, 115, 116, 117, 118, 119) - Dots above each temperature: 1 dot for 92, 3 dots for 95, 1 do…
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determine whether the study is an experiment or an observational study,…
- Type of study: Observational study (because researchers did not apply a treatment to the individuals). - Major problem: B. This is a convenience sample with voluntary response, …
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a survey was done of commuters in three major cities about how they pri…
D. 27%
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are there differences in airfare depending on which travel agency websi…
- For the p - value corresponding to Websites: \(0.1437\) - Conclusion: Since the p - value (\(0.1437\)) is greater than \(\alpha = 0.05\), there is no significant difference in t…
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determine whether the given source has the potential to create a bias i…
C. There does appear to be a potential to create a bias. There is an incentive to produce results that are in line with preferring private automobiles.
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use the statistical and critical thinking flow chart interactive to ans…
A. The study has statistical significance because the results are extremely unlikely to occur by chance.
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state whether the data described below are discrete or continuous, and …
B. The data are discrete because the data can only take on specific values.
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mosaic 1 a throng of passengers got off at the division street stop, so…
Rosie feels fully American.
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word study anglo-saxon suffix: -some most english suffixes are latin, b…
### Part A 1. **Explanation for Question 1**: - The sentence is about ants and flies that are annoying during a picnic. The word "bothersome" means annoying or irritating. - So th…
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1. the dot plot shows the number of movies a group of students watched …
46 ### Part 2: Conclusion from Dot Plot
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the table gives a set of outcomes and their probabilities. let a be the…
0.077
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19 historically, a given day at the beginning of march in upstate new y…
B. 33%
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identify the level of measurement of the data, and explain what is wron…
B. Such data should not be used for calculations such as an average (mean).
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for a fundraiser, there is a raffle with 200 tickets. one ticket will w…
For the payoff $X = 0$, the probability $P(X)=0.955$. So the table row should be: | $X$ | $P(X)$ | | ---- | ---- | | $\$0$ | $0.955$ |
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1. a student is chosen at random. if the probability that the student i…
A. 81.97%
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an agricultural scientist collected data to study the relationship betw…
B. For every 1 pound of nitrogen added to the field, the amount of corn yielded increases by 0.43 bushels.
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determine which of the four levels of measurement (nominal, ordinal, in…
D. The interval level of measurement is most appropriate because the data can be ordered, differences (obtained by subtraction) can be found and are meaningful, and there is no na…
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the sixth amendment provides additional protections to people accused o…
D. Eighth ### Question 14
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determine whether the description corresponds to an observational study…
Observational study
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identify the type of sampling used (random, systematic, convenience, st…
Systematic sampling (the option labeled "Systematic sampling")
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solving linear equations 16. 3 - 4(3x + 2) = 31 17. 8x - 52 = 10 - 4x 1…
- \( x \leq 7 \) and \( x \geq 2 \) means \( \boldsymbol{2 \leq x \leq 7} \) (only values between 2–7 inclusive). - \( x \leq 7 \) or \( x \geq 2 \) means \( \boldsymbol{\text{all…
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what do strong personal values provide? multiple choice a set of guidel…
B. a "map" for decision making (assuming the second option is labeled B; if the original labeling was different, adjust the label but keep the text. Since the options are presente…
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at a local hardware store, adam is selecting tools for a small toolkit,…
960
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according to the study data presented in the box, which of the followin…
D. Unpartnered adults ages 25 to 54 are twice as likely as their partnered peers to be living in the home of a parent or parents.
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12 what is the difference between extrapolation and interpolation? a ex…
B. extrapolation is when you extend the line to include what is on the outside of the graph to predict the outcomes; interpolation is when you use what is on the graph.
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11 what percentage of the days that it rained, did they forecast no rai…
B. About 14%
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which is true of a population in a statistical survey? check all that a…
B. A population can be a group of objects or events. D. A population must be the target of the survey question.
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10 what type of association does this graph have? scatter plot with x -…
C. Negative
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latin root words: week 8 quiz part i directions: match the root word to…
s: ## Part I 1. c 2. a 3. d 4. b ## Part II 5. insect 6. section 7. cavern 8. retrospect 9. export 10. excavation ## Part III 11. imports 12. portable 13. intersection 14. transpo…
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9 which value of r represents data with a strong negative correlation b…
C. -0.92
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compare the shapes, the centers, and the spreads of both classes: the d…
B. Class A is bimodal, Class B is unimodal, and Class A has a higher spread
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7 which relationship can best be described as causal (causation)? a num…
B. number of correct answers on a test and test score
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statistics - chapter one and two test - fall 2023 four questions 1-5, d…
A population is the complete set of all individuals, objects, or events under study. ### Question 2: Define "Sample" in Statistics
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mr. smith asked each player on the lacrosse team to write down their sh…
6
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a survey explored the relationship between gender and band class. which…
D. More than half of the band members in the class are girls
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world history study guide (40 questions section: prehistory what does p…
c) Time before writing ### 2. Question: Which of the following is an artifact?
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the two-way table shows 50 students that do or do not jog as an exercis…
C. 0.38 = 38%
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vijay wants to get his teacher a gift and asked his classmates for sugg…
4
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what is assertiveness? multiple choice using any means necessary to mak…
B. speaking up for yourself without violating someone else's rights (assuming the second option is labeled B; if the original options had different labels, adjust accordingly base…
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2 what type of correlation is there between the outside temperature and…
B. Negative
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1 what does the correlation coefficient tell you and what is the streng…
C. The coefficient is 0.94 and tells me the correlation is positive, strong positive
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jillian collected data about the average daily temperatures for two cit…
C. Over the course of the year, the mean temperature is greater in City B than City A. D. Over the course of the year, the range of temperatures is greater in City A than City B.
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mary played with some toy robots. then, she measured the height of each…
6
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5. what was jacobs answer? genesis 32:26 7. therefore, what do we know …
To answer these questions, we refer to the relevant Bible verses (Genesis chapters 32 - 33) and analyze the text: ### Question 5: What was Jacob’s answer? (Genesis 32:26) From Gen…
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natasha wants to find out if the neighborhood supports lowering the spe…
thirty residents who live within a 2 - miles radius of Natasha’s school
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carlos records the number of students in a variety of classes at his sc…
s: (a) The IQR decreases by \(\boldsymbol{2}\) students. (b) The range stays the same.
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fill in the blank the word ___ means union ... the word dropdown means …
union
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identifying when to use a sample for which survey is a sample not neces…
Do your classmates prefer warm or cool places to travel for vacation?
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deltamath.com pets survey | | pets | no pets | |----------|------|-----…
32.3%
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multiple choice the median age for marriage between different sex coupl…
The number of same - sex marriages leveled off and then declined somewhat since it became legal in 2015.
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2. which detail best supports the idea that the globe was important to …
b) It was quickly rebuilt after burning down. ### Question 3
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(b) select the probability that is equal to p(a) + p(b) - p(a and b). o…
\( \boldsymbol{P(A \text{ or } B)} \) (the option corresponding to \( P(A \text{ or } B) \))
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a bakery recorded how many muffins it recently sold. type of muffin: bl…
\(\frac{13}{58}\) (corresponding to the option \(\frac{13}{58}\))
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crisis of confidence in the late 70s, president jimmy carter described …
A. United States
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nixons unnecessary crime in november of 1972, richard nixon easily won …
A. paranoia
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the venn diagram below shows the 14 students in ms. russell’s class. th…
s: \( P(A) = \boldsymbol{\frac{4}{7}} \) \( P(B) = \boldsymbol{\frac{1}{2}} \) \( P(A \text{ and } B) = \boldsymbol{\frac{1}{7}} \) \( P(A \text{ or } B) = \boldsymbol{\frac{13}{1…
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distance (miles) which of the following is the best estimate for how lo…
30 minutes
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nixons presidency nixon was elected president in 1968. at the time, the…
high inflation
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mientras lees para empezar... do any club you belong to at your school …
** Yes, the Spanish classes seem popular.
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the definition of reading text is... a reading a written document. b an…
D. Engaging with/in written communication to gather information/meaning.
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mr. wong is about to give one of his students a piece of candy for aski…
\( 0.52 \)
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conflicting stories - president lyndon b. johnson wanted the united sta…
A. credibility gap
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final review bao dai causes upset - before the french left vietnam in 1…
B. to appease Ho Chi Minh and Vietnam
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every 3 months, the government releases median weekly earnings of full-…
950 ### Part b
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lamar goes for a bike ride every day. for the last two weeks, he tracke…
Since the problem description is incomplete (no specific question is asked about the scatter plot, like finding the correlation, equation of the line of best fit, etc.), we can't …
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the bar graph shows the estimated number of calories per day needed to …
The model \( F = -82x^2 + 653x + 616 \) overestimates the actual amount by approximately 31 calories.
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for each set of probabilities, determine whether the events a and b are…
To determine if events \( A \) and \( B \) are independent, we use the **multiplication rule for independent events**: Two events \( A \) and \( B \) are independent if \( P(A \ca…
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statistics - chapter one and two - tam 2023 for questions 1-5, identify…
s: 10. Mean: \( \boldsymbol{76} \) 11. Standard Deviation: \( \boldsymbol{\approx 9.01} \) (or exact \( \sqrt{\frac{730}{9}} \)) 12. Five - number Summary: \( \boldsymbol{55, 72, …
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read the following from a dictionary of american language heritage. cen…
C. The origin is from New Latin centrifugus and from Latin fugere, and it means to move away from the center.
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at a certain non - profit organization, 62% of employees are college gr…
\( 0.65 \)
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which definition for crush originates from northumberland and yorkshire…
- Northumberland (Nhb): the fracture of coal pillars in a pit. (Crush the coal.) - Yorkshire (Yks): a feast, dance, or other entertainment. (We'll have a good crush with apples.)
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suppose we want to choose 2 letters, without replacement, from the 4 le…
12 ### Part (b)
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origin latin variare latin varianta difference old french english vary …
A. variety
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4. a survey found that of 2,000 high school seniors surveyed 1,800 have…
### Part a: Completing the Frequency Table #### Step 1: Find "Does Not Have a Job" for "Has Driver’s License" We know the total number of students with a driver’s license is 1,800…
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1. according to paragraph 3, which of the following selections best des…
C. The people in the rest of America are just starting to experience the deep poverty that the people in her town have suffered through for many years. ### Question 2
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6.) there is a proportional relationship between cups of flour and eggs…
The constant of proportionality is \( \frac{3}{2} \) (or 1.5), which means that for each cup of flour, \( \frac{3}{2} \) (or 1.5) eggs are used (or for every 2 cups of flour, 3 eg…
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6 the purchasing habits of 1,000 grocery shoppers are noted. no associa…
The "no eggs bought, bought milk" cell can be \( 227 \) (or \( 228 \)) and "no eggs bought, no milk bought" cell can be \( 123 \) (or \( 122 \)). For example, filling the table as…
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nationalism - a strong sense of pride and loyalty toward one’s country …
A. Great Britain, France, Russia
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question 40 of 40 marsha has a bag that contains 4 green marbles, 8 yel…
C. \(\frac{2}{5}\) Wait, no, let's recalculate. Total marbles: 4 + 8 + 20 = 32. Non - red marbles: 4+8 = 12. Probability: 12/32 = 3/8? No, wait 4 + 8 is 12, 12/32 simplifies to 3/…
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problem: writing sometimes uses numbers in ways which are not in common…
C 41
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16 after she left, i lay there reminiscing about all the games of mine …
B. enthusiastically ### Question 2
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the day has finally come, and you’re ready to record. you and your gues…
A. Speak clearly and explain any technical or academic language the audience may not know.
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ralph rolls a single die two times in a row. what is the probability th…
C. $\frac{1}{36}$
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multiple-choice question \data\ in this video means: famous speeches. t…
D. Recorded results (assuming the last option is labeled D; adjust label if original has different numbering, but the content is "Recorded results")
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while being an entrepreneur can be the right career choice for many, so…
A. Thinking like an entrepreneur can make you a better student and employee, no matter what your job is.
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have we? probability & statistics a) (something)ty: (c) what is the pro…
\(\frac{5}{36}\)
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alex has one more suggestion before you begin filming it. he states tha…
B. Charts or graphs that show the need for conservation as found on a credible website