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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what does \pursue\ mean in this passage? to keep trying to achieve some…
to keep trying to achieve something
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1. the graphs below show some data from a coffee shop menu. one of the …
a. The left - hand graph is “cost vs volume” and the right - hand graph is “calories vs volume”. b. Calories and volume appear to be in a proportional relationship. Because for th…
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a. which graph is which? give them the correct titles. b. which quantit…
a. The left - hand graph is “cost vs volume” and the right - hand graph is “calories vs volume”. b. Calories and volume appear to be in a proportional relationship. We know this b…
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the abrupt sound of my dads voice calling to my mother surprised me. mo…
surprised me, sudden
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question 1 it is appropriate to use the uniform distribution to describ…
relative frequencies of all possible values of \(x\) are about the same.
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determine word meaning: using context clues 2 - quiz - level i i pause …
The clue "I pause" helps understand what "digest" means.
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starting my descent, while she ends her walk up to the locker room. \he…
The clues "had to modify my plans, so now I'll miss the first week" and "different schedule" help understand that "modify" means to change.
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in valentinas art class, students had the option to paint either a bouq…
\(26\%\)
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between here and jamaica i see my friend nina on the stairs to the gym.…
The clue "ends her walk up" helps understand that "descent" means going down (as it is contrasted with going up).
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fill in the blank. the standard deviation of the distribution of sample…
$\frac{\sigma}{\sqrt{n}}$
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fill in the blank. the tells us that for a population with any distribu…
Central Limit Theorem
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jenny dreams of becoming the national spelling bee champion. she can al…
no
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five students measured their pulse rates, then exercised by running up …
4. exercise that was done
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a cafeteria kept track of the type of milk students chose at lunch toda…
The relative frequency of plain milk for 8th - grade students is \(56\%\) and the relative frequency of chocolate milk for 8th - grade students is \(44\%\).
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nate looked at 20 vegetables throughout each grocery store in his city.…
yes
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mia surveyed the 7 top - ranking students in the high school. is this s…
yes
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fernando is passionate about movies and dreams of going to film school.…
No, \(x\) and \(y\) do not have a proportional relationship.
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5. a shop rents bicycles to customers. the rental cost is based on the …
| Time (hours) | Rental Cost (dollars) | |--------------|-----------------------| | \(0.5\) | \(1.25\) | | \(1\) | \(2.5\) | | \(1.2\) | \(3.00\) | | \(2\) | \(5.00\) | | \(3\) | …
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cassie will roll a standard 6 - sided die. what is the probability that…
\(\frac{1}{3}\)
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question 1 the divine command theory (dct) is based in the belief that …
1. 3. The will of God 2. 4. All the above 3. 2. Reason 4. True 5. 2. In the nature of the world
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linear equations w/ distribution (lev 2) score: 0/10 penalty: 1 off que…
\(x = - 2\)
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vii. writing prompt — final reflection essay (short response) prompt: a…
Janie's "to the horizon and back" shows her journey of exploring love (e.g., her relationships) and achieving freedom. Hurston wants readers to understand that true independence i…
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assume that females have pulse rates that are normally distributed with…
B. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.
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weights of golden retriever dogs are normally distributed. samples of w…
B. No; the original population is normally distributed, so the sample means will be normally distributed for any sample size.
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read the speech excerpt below and answer the question. looking for ways…
C. questions
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write the binomial probability in words. then, use a continuity correct…
- The probability in words: "the probability of getting a value of \(x\) that is greater than \(122\) and less than \(128\)" - The correct normal probability statement: D. \(P(122…
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find the expected value ($\\mu$) of the random variable with the given …
$4.2$
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read the passage from chapter 8 of the prince. agathocles, the sicilian…
The evidence uses examples of extreme violence to support the claim.
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the government of a large city needs to determine whether the citys res…
Survey a random sample of persons within each geographical region of the city.
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the frequency polygon to the right shows a distribution of iq scores. d…
False
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read the passage from animal farm. that evening squealer explained priv…
A. Squealer’s explanation of Napoleon’s tactics is representative of a dictator who reverses policies and lies about his reasons.
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what is the most common purpose for composition in art? a. it helps the…
A. It helps the artist create a meaningful experience.
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a student has the following grades: 6) will the students total grade be…
El total grade del estudiante (\(59.5\)) es más cercano a una E. La diferencia entre la calificación total y 60 (si E es 60) es \(0.5\), mientras que la diferencia con 90 (si A es…
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read the lines from the poem. her nights were dreams of jeweled skies, …
C. visualizes the wonder of other worlds
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tone is the authors attitude toward something in the story. the tone in…
C. funny
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read the sentence from the passage. just the place in winter for a host…
A. Time passes quickly when friends are together.
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directions: read the thesis statement and paragraphs and answer the que…
B. Refer to research that debunks "negative calories." C. Provide a personal experience with someone who had a negative experience while on a "negative calorie" diet. D. Provide a…
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a researcher wants to avoid making a type ii error. which of the follow…
A. Increase the sample size.
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question 3 a researcher wants to avoid making a type i error. which of …
C. Choose an alpha level of 0.01.
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food inspectors inspect samples of food products to see if they are saf…
B. Type II
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question 4 researchers at gallup were interested in whether there was a…
D. \(H_0: p = 0.60\) vs. \(H_a: p < 0.60\)
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an automatic coffee machine dispenses cups of coffee whose volume per c…
A. One - Sample T
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researchers at gallup were interested in whether there was a decrease i…
D. \(H_0:p = 0.60\) vs. \(H_a:p<0.60\)
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1. the graph at the right shows the amount in a savings account over th…
The average rate of change is \(- 10\) dollars per week. It means the amount of money in the savings account is decreasing by \(10\) dollars each week.
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in june 2005, a cbs news/ny times poll asked a random sample of 1,111 u…
A. We have extremely strong evidence to reject \(H_0\).
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a manufacturer of bedding wants to do quality control on its 400 - thre…
A. The data provide enough evidence to reject $H_0$ and to conclude that the mean thread count is different than the target level of 400.
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a study was conducted to estimate $mu$, the mean number of weekly hours…
D. The current study does not provide significant evidence that the mean number of weekly hours has changed over the past year, since 8 falls inside the confidence interval.
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read this paragraph from \online identity\: while the online mask does …
B. The phrase "what lies behind the mask" reveals the author's belief that online identities can reveal truth about people.
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una ruleta con 6 sectores de igual tamaño se compone de 3 sectores de c…
\(\frac{1}{2}\)
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the wechsler adult intelligence scale (iq test) is constructed so that …
A. z - test for the population mean
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the dean of the engineering school at a technical university wants to e…
D. \(H_0:\mu = 150; H_a:\mu>150\)
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according to facebooks self - reported statistics, the average facebook…
C. Mean number of Facebook friends for CCC students
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question 1 according to facebooks self - reported statistics, the avera…
B. The data is statistically significant. In other words, the data do provide enough evidence to conclude that the mean number of Facebook connections to community pages, groups a…
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according to statistics, a person will devote 36 years to sleeping and …
The person will spend \(9\) years watching TV and \(27\) years sleeping.
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the television show 50 minutes has been successful for many years. that…
\(P(\text{none})\approx0.0084\) \(P(\text{at least one})\approx0.9916\) \(P(\text{at most one})\approx0.0503\) no, it is not wrong
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read this excerpt from chapter 2 of the scarlet letter using comprehens…
wickedness, sin
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read the sentence. as the boy grew to be a teenager, he became more def…
B. The boy began to disobey his mother.
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choosing vocabulary quiz complete 1 read the sentence. from a prior sce…
C. hysterical, D. contemptible
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if a seed is planted, it has a 60% chance of growing into a healthy pla…
\(0.27648\)
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instead of simply repeating a series of numbers he wants to remember da…
B. deep processing.
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question 32 an election results in a senate with 55 democrats and 45 re…
\(11\)
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question 34 what is the main idea of levels of processing (or depth of …
D. "If you want to remember a piece of information, you should think about it more deeply and link it to other information and memories to make it more meaningful."
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a manufacturing machine has a 9% defect rate. if 6 items are chosen at …
\(0.4321\)
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unemployment and the labor market — end of chapter problem consider a s…
\( 4.76\% \)
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question 4 the smith family was one of the first to come to the u.s. th…
The probability of at least 5 girls is \(\frac{7}{64}\) The probability of at most 3 girls is \(\frac{21}{32}\)
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question 3 which strategy helps build a web of retrieval cues because i…
C. Self - reference effect
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2 what does \densely inhabited place\ mean? a many trees and plants gre…
B. A lot of people lived there
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question 10 copying and sharing flies of copyrighted materials without …
B. Piracy
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question 9 of 10 read this passage: first murderer. and i another so we…
B. I'm also tired of struggling and will do anything to make my life better.
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question 7 of 10 read this passage: hecate. have i not reason, beldams …
C. To join in and help out
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ed ran a bean bag toss game at the serrano schools carnival. he tracked…
\(50\)…spread
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passage: natalie loved to bake! so, she asked her grandma if she could …
1. Natalie's cookies will burn. 2. Large, rounded portions.
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using the histogram below determine how many trees were exactly 75 feet…
E. This cannot be determined from the histogram
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question 9 (1 point) refer to the following passage from chapter 12. wh…
b. It means that Ralph understands that the tribe will hunt him down and try to kill him, just as they've killed Simon and Piggy.
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the contribution margin per unit expressed as a percentage of the produ…
Contribution margin ratio.
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the average price of an acre of land in some country was $1126 in 2001.…
a. \((2001,1126),(2006,1581)\) b. The slope of the line through the two points is \(m = 91\) c. The price of land per - acre increased at a rate of about \(\$91\) per year. So the…
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what are some limitations in using a line of best fit drawn on a scatte…
C. It is possible to draw different lines to approximate the same data. The line of best fit is only an estimate.
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a student takes ten exams during a semester and receives the following …
A. \(58,70,83.5,90,102\)
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the ideal weight (in stones) of people of varying heights is given in t…
C.
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a survey of the 5769 vehicles on the campus of state university yielded…
A. 288
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question 23 (1 point) shades of meaning: read each sentence carefully a…
A. jointed
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forty people were randomly sampled and surveyed as to the number of pet…
d. \(1.4,1,0\)
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question 22 (1 point) shades of meaning: read each sentence carefully a…
d. whirlpool
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because the graph below is misleading, which magazine appears to have a…
d. None of them
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women in the army source: time magazine, march 24, 2003 a. positive; as…
A. positive; as time goes on, more women are in the army.
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#10 based on this graph, two pounds of cauliflower will cost ______ and…
Two pounds of cauliflower will cost \(\$3.00\) and five pounds of cauliflower will cost \(\$7.50\).
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what does it mean for a thesis statement to be arguable? an arguable th…
An arguable thesis statement is one that is based on the writer's opinion or perspective of an issue or topic.
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review the way that chief canassatego tells a story. we know that you h…
It illustrates how the goals of colonial education are different from those of Native American education.
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review the text in bold. we know that you highly esteem the kind of lea…
He tells a story.
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read the following excerpt. it is adapted from a 1744 speech by chief c…
to question the value of college education for Native Americans
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the table below shows the scores on a math test. david 75 aaron 75 ashl…
b. 12.5
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what is the box - and - whiskers plot used to show? a. a histogram c. m…
B. variability
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on a box - and - whiskers plot, what does line segment 2 represent? a. …
C. first quartile
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a boxplot helps to visualize the variability of a distribution. five st…
A. 75% of the data is below the third quartile
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mickey mantle played for the new york yankees for 18 years. here is the…
a.
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gregorio took two tests. find his z - score for each test. (remember: t…
D. Test A: -3; Test B: -2; Test A
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the table below shows the scores on a science test. john 75 brett 80 el…
d. 2.2
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the histogram below shows the heights of trees at a park. how many tree…
\(31\)
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which reasons support the claim about the importance of implementing a …
It will raise awareness in the school about different kinds of music from different cultures. It will make issues of diversity accessible, meaningful, and fun. It will bring peopl…
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in a compound inequality, what does the term \or\ mean in terms of the …
It only has to make one of the inequalities true.