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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ch. 15 homework (due on 10/9) a1. the mean height of a female in the un…
The mean, $\mu_{\bar{X}}$, of the average heights will be close to $65$ and the standard deviation, $\sigma_{\bar{X}}$, of the average heights will be close to $0.41$.
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what is the range of the data set shown? 4, 4, 13, 37, 37 a 13 b 19 c 3…
# Explicación: ## Paso 1: Identificar el valor máximo y mínimo El conjunto de datos es 4, 4, 13, 37, 37. El valor mínimo es 4 y el valor máximo es 37. ## Paso 2: Calcular el rango…
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what is the range of the data set shown? a 13 b 19 c 33 d 95
Ninguna de las opciones es correcta. El rango es 24.
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which measure is most appropriate to describe the center of the data in…
median
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read the passage. bu - gol - gi \can you chop the scallions?\ seo - jun…
"Her mother had spent years learning to speak relatively good English..."
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student - produced response directions: if you find more than one corre…
# Explicación: ## Paso 1: Comprender el problema El problema se refiere a la probabilidad de sacar una bola amarilla o roja de un bolso. Dado que la probabilidad de sacar una bola…
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a bag contains only yellow marbles and red marbles. the probability of …
# Explicación: ## Paso 1: Definir la fórmula de probabilidad La probabilidad de un evento $P(E)=\frac{\text{número de casos favorables}}{\text{número total de casos}}$. Sea $P(R)$…
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2. part a: what does the word \impious\ mean as it is used in paragraph…
## 2. PART A: A. Blasphemous ## 3. PART B: C. "dominion over the faith of others" ## 4. PART A: C. God gave people free will, and as such to deny a person religious freedom is to …
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the list gives the speeds, in miles per hour, of 7 serves made by a pro…
B. 128
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read the following description of a data set. researchers at a sleep cl…
8
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read the following description of a data set. a reporter for a college …
$431$
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read the following description of a data set. the president of a book c…
$11$
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read the following description of a data set. aisha wants to ensure tha…
6
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brand y - cola sponsors a survey of 15,559 residents of texas to determ…
B. the 15,559 residents
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read the following description of a data set. the math teachers at newb…
$103$
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read the following description of a data set. tucker is a math teacher …
$68.403$
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we the people read the preamble below. the preamble lists six goals for…
B. The American people
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read the following description of a data set. a property developer has …
4091
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read the following description of a data set. the counselor at sparrowt…
$0.787$
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12 this question has two parts. first, answer part a. then, answer part…
Part A: D. They are both on an adventure. Part B: B. The better part of me felt carved away as we fled Luna, and I knew I would never again hear my grandmother say my name, never …
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a teacher asks students to list the math lessons they learned on nine r…
simple random sampling.
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in what ways does cultural identity shape place and space? a) cultural …
A. Cultural values influence architecture, land use, and community design
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if the prefix re- means again, what does the word recommence mean? look…
to begin again
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the speaker describes the story simon wheeler told him as an interminab…
E. never ending
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the author gives examples to demonstrate the meaning of monotonous. cho…
"never smiled", "never changed his voice", "never frowned", "never betrayed the slightest suspicion of enthusiasm"
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at x = 70, which of the following is closest to the y - value predicted…
# Explicación: ## Paso 1: Localizar x = 70 en el eje x Observar la gráfica. ## Paso 2: Trazar una línea vertical hasta intersectar la recta Dibujar una línea desde x = 70 hacia ar…
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4 select three details from passage 1 that would be important to includ…
4. C. Thomas is in complete darkness and confused when he realizes he is trapped in an old metal elevator that is ascending.; D. Thomas retained his clarity of thought and can rem…
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read the excerpt from the rosetta stone. egyptian scripts were replaced…
For a long time, scholars from different places tried to figure out the meaning of hieroglyphs, but they mistakenly believed each hieroglyph was a symbol.
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read the excerpt from \the enigma machine\. cryptologists looked for cr…
people who study codes
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3. a company wants to estimate the average weight of apples in a shipme…
a) The parameter being estimated is the population - mean weight of apples in the shipment, denoted as $\mu$. b) The statistic that gives the best estimate is the sample mean $\ba…
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1. the first amendment allows people to petition the government. what d…
1. A. Ask leaders to change or create laws 2. C. Plain View 3. C. Ask incriminating questions 4. A. Speedy and public trial 5. B. Cruel and unusual punishments 6. D. Protection fr…
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2. you are interested in learning what percentage of adult us citizens …
a) The parameter being estimated is the proportion of all adult US - citizens who regularly stream movies online. Symbol: $p$. b) The best estimate (sample statistic) is 0.68. c) …
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what does earning an endorsement mean to your career opportunities? an …
An endorsement means that you are knowledgeable in a career field, and it can open doors to training opportunities.
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what does the word “strong” mean in the sentence? use context to determ…
extremely capable
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1. how is it done? how the distribution of goods and services is determ…
Government officials decide what and how much to produce.
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question 3 read this passage from the article: for many years, the cont…
C. positive actions
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1. a)state the two primary parameters and statistics4 total we have stu…
a) Population mean: $\mu$, Sample mean: $\bar{x}$, Population standard - deviation: $\sigma$, Sample standard - deviation: $s$ b) Parameters come from populations. Statistics come…
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in examining the difference among the types of broncos, what is the nul…
D. $H_0:\mu_1=\mu_2=\mu_3 = \mu_4$
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bubbas auto owns three 1987 ford broncos—one black, one brown, and one …
C. $H_0:\mu_1=\mu_2=\mu_3=\mu_4$
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2) mistakes are good • mistakes are the thing that makes the difference…
C. A draft that can be wordy or provide unnecessary information.
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question 20 if a confidence interval for the difference between a pair …
A. True
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the f - distributions curve is negatively skewed. a true b false questi…
Question 18: B. False Question 19: D. Simultaneously compare several population means
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3. ursula interviewed 75 people to see if they liked reading comic book…
## 3b. $\frac{6}{15}=\frac{2}{5} = 0.4$ ## 4a. 10 ## 4b. $\frac{45}{186}\approx0.242$ ## 4c. The conditional - frequency that a 21 - 35 year - old recycles is $\frac{56}{66}\appro…
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several ikea employees have proposed different methods for assembling a…
B. 4
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deep in a wood. and only one of them remained, stood there, miserable, …
B. It emphasizes the theme of loyalty by contrasting Wiglaf’s courage with the cowardice of the other warriors.
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question 16 one characteristic of the f - distribution is that the comp…
B. False
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read the following sentence from a students essay about ordering grocer…
B. endless
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question 15 in anova, the null hypothesis is: a $h_0: \\sigma_1 = \\sig…
D. $H_0: \mu_1=\mu_2 = \mu_3$
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if we want to determine which treatment means differ, we compute a conf…
A. True
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when testing for differences between treatment means, the degrees of fr…
A. (n - k)
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question 11 to employ anova, the populations should have approximately …
A. True
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question 10 the alternative hypothesis used in anova is h1: all populat…
B. False
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to employ anova, the populations being studied must be approximately no…
A. True
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in an anova table, k represents the total number of sample observations…
B. False
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when testing for differences between treatment means, the t statistic i…
C. the error degrees of freedom
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question 6 which statement is correct about the f - distribution? a is …
C. Cannot be negative
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in the play pygmalion, the character of galatea is not a statue as in t…
C. The poor are often objectified.
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verbal irony - a literary device in which the speakers intended meaning…
He bought her combs for hair she no longer has.
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question 5 5 points an f statistic is a a population parameter b the di…
D. A ratio of two variances
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how did john d. rockefeller horizontally integrate his monopoly in 1882…
He created a trust that controlled ninety percent of the nation's oil refineries.
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fuel efficiency (in miles per gallon) weight (in pounds) (a) for these …
25 miles per gallon
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different from (and often opposite to) the literal meanings of the word…
C. verbal irony
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fuel efficiency (in miles per gallon) weight (in pounds) (a) for these …
(a) decrease (b) negative (c) decrease
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match the correlation coefficients with the scatterplots shown below. s…
Scatterplot A: $r=-0.37$ Scatterplot B: $r = 0.67$ Scatterplot C: $r=0.86$ Scatterplot D: $r=-0.72$
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rental revenue (in millions of dollars) theater revenue (in millions of…
11.6 million dollars
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how did john d. rockefeller horizontally integrate his monopoly in 1882…
He created a trust that controlled ninety percent of the nation's oil refineries.
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how do the underlined sentences help explain the meaning of \somatoform…
They illustrate the meaning of the term.
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for an anova test, rejecting the null hypothesis does not identify whic…
A. True
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(a) for these 21 movies, as theater revenue increases, rental revenue t…
(a) increase (b) positive (c) increase (assuming we are referring to the general trend based on the line of best - fit)
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an electronics company wants to compare the quality of their cell phone…
C. the four companies
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time spent doing homework (in hours) time spent watching tv (in hours) …
(a) Decrease (b) negative (c) 15.1 hours
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when testing for differences between treatment means, a confidence inte…
D. the standard error of the mean
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6- which sampling method is most likely to produce bias if not done * 1…
6. A. Convenience sampling 7. A. The difference between the sample result and the true population value
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time spent doing homework (in hours) time spent watching tv (in hours) …
(a) decrease (b) negative
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if an anova test is conducted and the null hypothesis is rejected, what…
A. At least one pair of population means is different.
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determine the meaning of the underlined word in the following sentence.…
stained
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paragraphs that compare and contrast two things _____. explain what a k…
are arranged according to similarities and differences
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identify the meaning of the underlined word. i think the hotel added a …
a fee for a service
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the dot plots show the number of miles run per week for two different c…
D. Class A is skewed left; spread is 12
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what is the probability of those who are wearing brown shirts are male?…
C. 56%
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the table shows the time, in hours, spent by students on electronic dev…
D. - 0.977
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question 10 of 10 what purpose do the frequent references to hindu gods…
A. To draw upon the readers' common, shared knowledge
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10 what is the relative frequency of females who play basketball? (this…
C. 16%
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transitions and transitional phrases a transition is used to carry the …
C. all of a sudden
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match the correlation coefficients with the scatterplots shown below. s…
Scatterplot A: $r = 0.87$ Scatterplot B: $r = 0.63$ Scatterplot C: $r=-0.75$ Scatterplot D: $r = - 0.41$
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scatterplot|correlation coefficient scatterplot a|r = 0.87 scatterplot …
Scatterplot A
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14 out of 52 cards, find p(face card | spade) a 23% b 25% c 92% d 46%
A. 23%
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source: us bureau of labor statistics. which statement best evaluates t…
The source appears to be reliable because it is published by a government agency (U.S. Bureau of Labor Statistics), is published recently, and contains multiple viewpoints to docu…
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questions for macbeth acts 1 and 2 (2 points each) act 1: 1. what state…
1. Witches' "foul and fair" is a paradox; Macbeth's reflects confusion. 2. Macbeth: shocked - intrigued; Banquo: skeptical. 3. Duncan is kinsman, guest, and virtuous. 4. Loyalty a…
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the student council is hosting a drawing to raise money for scholarship…
$-3.05$
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which graph represents a strong positive relationship? (a) b (b) c (c) …
C. D
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of the cyclopes. polyphemus is son to poseidon by the nymph thoosa, dau…
B. Athena and Zeus
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reporting officer: ancient artifacts: what does the coin say on it and …
1. For "Ancient Artifacts: What does the coin say on it and what does it mean?": Requires knowledge of ancient Roman coin - inscriptions and their meanings, which can be found thr…
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which line from \safari day in kenya\ contains an example of assonance?…
# Breve explicación: La asonancia es la repetición de sonidos vocálicos en palabras cercanas. En "Gazelles race by, blurred brown streaks", se repite el sonido /ɔː/ en "Gazelles",…
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read this passage: marta always bought designer sunglasses, but she was…
A. The connotation of the word cheap suggests her new glasses broke more easily than the others did.
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enter your answer in the box. the word biocontainment is an example of …
terminología técnica
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multiple choice question the word root angio - means vessel vein contra…
vessel
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multiple choice question what root means vessel? o lun- o ather- o scle…
angio-
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read the excerpt from the hot zone. she took up a scalpel and slit the …
# Breve explicación: El texto muestra que "scalpel" se utiliza para hacer un corte en el abdomen del mono y se menciona "blade" (hoja) en relación con él, lo que sugiere que es un…
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which strategies are most effective to help a reader determine the mean…
- Check surrounding words to see what events are leading up to this word. - Substitute the unfamiliar word with a familiar word to see if it makes sense. - Ask people nearby if th…