統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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a good sign is that your video is getting more views each day. now, you…
1,250 views
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look at the roots below. which one means join? junc cede pens puls
junc
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what does the root bio mean? do or make change life the study of someth…
life
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look at the roots below. which one means time? min chron geo tele submit
chron.
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multiple - choice question what does akhet, or \inundation\ mean? flood…
flooding
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every item on a totem pole holds meaning-the choice of colour, animal, …
History poles
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ome as your default browser and pin it to your taskbar set as default w…
\(y = 2x + 12\)
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when the sex of an unborn baby is known, friends and family tend to giv…
Gender roles
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3 for each graph, explain whether the relationship could be proportiona…
- Graph A: The relationship is not proportional. The points do not lie on a straight line (the rate of change between the number of bricks and the height of the triangular wall is…
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which scatter plot could have a line of best fit whose equation is $y =…
El primer gráfico (el de la izquierda - arriba) es el que podría tener una recta de mejor ajuste \( y=x + 12 \) porque muestra una correlación positiva (tendencia de aumento de \(…
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which graph shows the line of best fit for the data in the scatter plot?
La primera gráfica (la del primer recuadro de la izquierda) es la que muestra la línea de mejor ajuste para los datos en la gráfica de dispersión.
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this system of equations is: consistent independent consistent dependen…
- The system of equations is: consistent independent - This means the system has: a unique solution (Solution: \((0,0)\))
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question 3 of 6 (1 point) | question attempt: this system of equations …
consistent independent, a unique solution.
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question 3 of 6 (1 point) | question attemp this system of equations is…
The system of equations is consistent independent. This means the system has a unique solution.
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2 diego made a graph of two quantities that he measured and said, “the …
No, I do not agree with Diego. For two quantities to be proportional, all points (including the origin) must lie on a straight line. Since one point is not on the line, the quanti…
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line 2: $y = x - 5$ this system of equations is: consistent independent…
consistent independent, a unique solution, (3, - 2)
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what is the probability of rolling a sum of 8?
\(\frac{5}{36}\)
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practice problems 1 mai measured the height, perimeter, and area of som…
a. No. The ratios of perimeter to height are not constant (\(\frac{3.9}{1.1}\approx3.55\) and \(\frac{8.1}{2.4}=3.375\)). b. No. The ratios of area to height are not constant (\(\…
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which color marble is most likely to be picked? a box contains 2 purple…
red
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8. how much for that house? the mean and median selling prices of exist…
a. The mean is $\$260700$ and the median is $\$213600$. The mean is affected by extreme (high - priced) homes, pulling it up, while the median is the middle value. b. An unethical…
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line 2: -3x + 2y = 0 this system of equations is: consistent independen…
First system: consistent independent, a unique solution. Second system: consistent independent, a unique solution. Third system: inconsistent.
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a bag contains 1 blue, 2 green, 3 yellow, and 3 red marbles, as shown. …
choosing a blue, green, or yellow marble
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a bag contains 1 red, 1 yellow, 1 blue, and 1 green marble. what is the…
\(\frac{1}{12}\)
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juanita rolls a number cube x times. for which value of x are the exper…
6
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6. smart kids the histogram displays the iq scores of 60 randomly selec…
The mean is the more appropriate measure of center. The histogram of IQ scores is likely symmetric or slightly skewed. The mean uses all data points (sum of all IQ scores / 60) to…
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a scientist is studying tulips and daffodils. the scientist estimates t…
He can choose 10 tulips and 30 daffodils.
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a package contains 4 red, 2 green, 8 purple, and 6 blue jelly beans. wh…
\(\frac{12}{95}\)
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kyles handful of trail mix has 2 almonds, 4 peanuts, 3 raisins, and 5 s…
\(\frac{2}{7}\)
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the probability of choosing a penny from the 1980s from the bag of penn…
unlikely
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5. birthrates one of the important factors in determining population gr…
a. The mean is greater than the median because the distribution is right - skewed. b. The median is a better measure of center as it is less affected by the extreme values (right …
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gerald is conducting an experiment with 3 possible outcomes. kasey is c…
Gerald will need to conduct more trials than Kasey because there are fewer possible outcomes in his experiment.
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pre-algebra ic sem 2 fall 2025 counting and probability which best desc…
A sample in which the elements are chosen by chance.
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myrna wants to know about how many pairs of jeans middle school student…
The average middle school student owns around two pairs of jeans.
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adriana, henry, malik, and richard each design surveys to determine the…
Richard's sample
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when a teacher asked a class of grade 4 and 5 students in north bay, on…
Relative poverty
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a random sample of people is chosen to participate in a survey. for the…
The sample must represent the target population.
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lewis is rolling a 10 - sided die 250 times. each side of the die is la…
75
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pre-algebra ic sem 2 fall 2025 counting and probability the theoretical…
Out of every 5 trials, the desired outcome will occur approximately 2 times.
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when henry surveyed 45 seventh - grade students at random in the school…
About 36 seventh - grade students like reggae music.
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melanie asked 15 random seventh - grade students how many soccer games …
\(\frac{13}{15}\)
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a set of data items is normally distributed with a mean of 80 and a sta…
\(1\)
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read the excerpt from enriques journey. moreover, the mara salvatrucha …
# Brief[SSE Completed, Client Connection Error][SSE Completed, Client Connection Error][LLM SSE On Failure]
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read the excerpt from enriques journey. moreover, the mara salvatrucha …
- C. It indicates that the gangsters are looking for vulnerable people. - E. It supports the idea that the gangsters are involved in criminal activities.
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nadine conducted an experiment with four possible outcomes. trevor cond…
Trevor has more experimental outcomes than Nadine; Trevor's experimental probability is more likely closer to the theoretical probability than Nadine's; Trevor's sample space is g…
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instructions choose the best answer. if necessary, use the paper you we…
65
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scores on the gre (graduate record examination) are normally distribute…
\(99.7\)
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use the spinner to determine who will order first. use the interactive …
The theoretical probability of the spinner landing on Elisondra is \(\frac{1}{4}\).
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read the excerpt from enriques journey. moreover, the mara salvatrucha …
# Brief Explanations: La palabra "prowl" significa acechar o rondar en busca de algo. En el contexto, los pandilleros acechan las cubiertas de los trenes "buscando durmientes", lo…
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find the equation for the least squares regression line of the data des…
\(y=-1.985x + 34.893\)
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find the equation for the least squares regression line of the data des…
\(y = 0.209x+6.788\)
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find the equation for the least squares regression line of the data des…
\(y = 5.706x-3.069\)
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say that a card is drawn from a standard deck of cards with no jokers. …
Fraction: \(\frac{1}{4}\) Decimal: \(0.25\) Percentage: \(25.00\%\)
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find the value that corresponds to the given area in the figure below. …
\(-0.90\)
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find the area under the standard normal distribution curve between ( z=…
\(0.4531\)
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find the equation for the least squares regression line of the data des…
\(y = 10631.530x-99376.917\)
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the graph shows the distribution of the amount of time (in minutes) peo…
86 minutes
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records show that oliver is typically 10 - 30 minutes late for his shif…
70%
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use the given information to find the p - value. also, use a 0.05 signi…
C. \(0.3015\); fail to reject the null hypothesis
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formulate the indicated conclusion in nontechnical terms. be sure to ad…
A. There is sufficient evidence to support the claim that the mean is greater than 32 miles per gallon.
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express the null hypothesis and the alternative hypothesis in symbolic …
C. \(H_0:p = 5.8\%\), \(H_1:p>5.8\%\)
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find the equation for the least squares regression line of the data des…
\(y = 10612.513x-99039.374\)
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claim: the mean systolic blood pressure of all healthy adults is less t…
\(-0.48\)
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find the standard deviation for the group of data items. the standard d…
\(7.91\)
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find a. the mean. b. the deviation from the mean for each data item, an…
a. The mean is $166$. b. The deviations are $-7,-5,0,4,8$. c. The sum of the deviations is $0$.
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a data set about speed dating includes \like\ ratings of male dates mad…
- **Null and alternative hypotheses**: A. \(H_{0}:\mu = 8.00\), \(H_{1}:\mu<8.00\) - **Test statistic**: \(-2.11\) - **P - value**: \(0.018\) - **Final conclusion**: Fail to rejec…
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a student is writing a report about the indo - european language family…
1. History 2. Geographic distribution 3. Speaker populations 4. History
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given the following venn diagram: data note: when answering the questio…
a) \(0.3725\) b) \(0.4222\)
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a genetic experiment involving peas yielded one sample of offspring con…
- Null hypothesis \(H_0:p = 0.25\) - Alternative hypothesis \(H_1:p eq0.25\) - Test statistic \(z\approx1.16\) - P - value \(= 0.246\) - Conclusion about the null hypothesis: Fai…
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match each correlation coefficient to the appropriate scatter plot. the…
The first scatter - plot (\(y\) vs \(x\) with a line having a positive slope and data points somewhat close to the line) has \(r = 0.7\). The second scatter - plot (\(y\) vs \(x\)…
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a television show conducted an experiment to study what happens when bu…
The intent of the experiment was to test \(H_0:p = 0.5\) and \(H_1:p>0.5\). Based on these results, there is not sufficient evidence to support the claim that buttered toast will …
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find the critical value and rejection region for the type of t - test w…
A. \(t_{0}=-2.797,t_{0}=2.797;t < - 2.797,t>2.797\)
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in a study of cell phone usage and brain hemispheric dominance, an inte…
Because the P - value is greater than the significance level, we fail to reject the null hypothesis. There is not sufficient evidence to support the claim that the return rate is …
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which of the following is a requirement for testing a claim about a pop…
C. The conditions \(np\geq5\) and \(nq\geq5\) are both satisfied.
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assume a significance level of \\( \\alpha=0.05 \\) and use the given i…
a. D. Reject \(H_0\) because the \(P -\)value is less than or equal to \(\alpha\). b. C. There is sufficient evidence to support the claim that the percentage of adults that would…
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3. the mean life of a battery is 50 hours with a standard deviation of …
- Battery problem: normalcdf\((-1000,38,50,6)=0.0228\), number of batteries to replace \(=50000\times0.0228 = 1140\) - Part (a): normalcdf\((83,1000,75,15)=0.303\), number of stud…
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first, citing sources is simply the right thing. this is because one is…
B. It is dishonest to take the work of others and try to pass it off as our own.
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what is one type of question that appears in the reading comprehension …
A. Questions about the relationship between sentences
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act scores are normally distributed with a mean of 20 and standard devi…
\(27.5\)
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which type of course is meant to prepare students for college - level c…
D. A developmental course taken in college
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quality care in the new millennium means more the providing the right c…
First question: B. True Second question: D. culture
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instructions choose the best answer. if necessary, use the paper you we…
10
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1. what does it mean to call the u.s. constitution a \living document\?…
B. It can be changed over time to address new circumstances.
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to make, accept, and decline requests, youll need to use the verb pouvo…
1. pouvez 2. peux 3. peux 4. peut 5. peux 6. peuvent 7. peux 8. pouvons
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5. which combination of questions would help a reader figure out the th…
What happened? What did it mean?
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if your percentile on the sat is 76, it means that you did as well as o…
C. 76 percent of students who took the test.
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thomas is writing a report about the graduation rate of seniors at the …
- the total number of seniors at Centerville High School - the total number of seniors at Westville High School
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3. roadwork can have a significant impact on wildlife. specifically, th…
A. An experiment using a matched - pairs design
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use the paragraph to answer the question. in spite of short rations she…
It is meant to emphasize the amount of milk the cow produced.
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the addition rule of probability can be defined as... ○ the probability…
the probability that either one of two mutually exclusive events will occur.
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consider the excerpt and theme from gilgamesh: a new english version. e…
People can depend on their god(s).
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2. spelling is an important skill in the early years of formal schoolin…
D. The individual scoring the final spelling test will know whether the children used rainbow writing or practice retrieval.
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ap stats lessons 4.5 to 4.9 name quiz 1. a study in malindi, kenya, was…
E. An observational study was conducted, and the response variable is the mosquito population.
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which of the following is an example of a compound sentence from mansfi…
"Ever since his birth the boss had worked...; it had no other meaning if it was not for the boy."
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find the standard deviation for the group of data items. the standard d…
\(2.75\)
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3. which of these calls is most likely to sound desperate? base your an…
a call for help
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3. which of these calls is most likely to sound desperate? base your an…
A. a call for help
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what does the root cand mean in the word candescent? the candescent qua…
glowing
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what does the suffix -ism mean in the word capitalism? private ownershi…
system
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what does the prefix ob - mean in the word obstructive? her constant la…
blocking something
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what is the correct meaning of the word homage? treasure courage debts …
respect