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 box - and - whisker plot below represents some data set. what is th…
\(30\)
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the correlation coefficient for a given set of data is $r = 0.962$. sel…
# Explicación breve: El coeficiente de correlación \( r = 0.962 \) es positivo y cercano a 1. Un valor de \( r \) cercano a 1 (en valor absoluto) indica una asociación fuerte. Un …
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martina is interested in learning about different education systems aro…
Negative, Weak
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a carnival game is designed so that approximately 10% of players will w…
Because the $P$-value $<\alpha = 0.05$, there is convincing evidence that the true proportion of players who win this game differs from $0.10$.
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question the graph below represents the number of goals scored by the g…
0
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question the graph below represents data that was collected by students…
\(10\)
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question 2 2 pts which of the following statements is an example of des…
Fourteen percent of male survey respondents reported having a diagnosis of cardiovascular disease.
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the graph below represents how long it takes students in an 8th grade m…
\(20 - 29\) minutes
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noah creates a scatter plot showing the relationship between the number…
Yes
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there is (select) between how much seans classmates like math and how m…
a positive linear association
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the fahrenheit temperature readings on several spring mornings in new y…
\(35\)
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there is because (select) (selcet) there is an outlier in the data ther…
there is an outlier in the data as the math rating increases the teacher rating increases
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select the word or phrase that is redundant and can be removed without …
"possibly"
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a real - estate agent conducted an experiment to test the effect of sel…
\(t=\frac{150000 - 175000}{\sqrt{\frac{22000^{2}}{5}+\frac{35000^{2}}{5}}}\). The \(P\) - value is between \(0.10\) and \(0.15\)
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one professional basketball player typically attempts eight free throws…
The probability of the number of free throws made out of 8 is at most 3.
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the dot plot below represents how long it takes students in a 9th grade…
0
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in a statistics activity, students are asked to spin a penny and a dime…
The student should fail to reject the null hypothesis since \(0.296 > 0.05\). There is insufficient evidence that the true proportion of times a dime will land tails up is signifi…
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the graph below represents the result of a survey in which a number of …
\(8\)
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the dot plot below represents the number of goals scored by the girls s…
5
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in a statistics activity, students are asked to spin a penny and a dime…
The second option \(z=\frac{0.60 - 0.67}{\sqrt{\frac{(0.63)(0.37)}{30}+\frac{(0.63)(0.37)}{30}}}\), \(P - value = 0.296\) is correct.
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select the word or phrase that is redundant and can be removed without …
The redundant word is "still".
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homework due monday, 11/10/2025 jada surveyed all 7th and 8th graders a…
| | has pet | has no pet | total | |---|---|---|---| | 7th grade | 102 | 48 | 150 | | 8th grade | 107 | 68 | 175 | | total | 209 | 116 | 325 |
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select the word or phrase that is redundant and can be removed without …
plain
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complete the sentence. bernie knew that he had heard the word auspiciou…
use the word in a sentence
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it is common knowledge that a fair coin lands heads up 50% of the time …
\(\chi^{2}=5.79\), \(P\) - value is between \(0.05\) and \(0.10\) (the first option)
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ms. truman has always provided her statistics students with a small ind…
Yes, the smallest expected count is \(5\), so all expected counts are at least \(5\).
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a survey is conducted to determine if there is a difference in the prop…
\(\chi^{2}\approx0.19\), \(df = 2\) (First option: \(\chi^{2}\approx0.19\), \(df = 2\))
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a study is conducted in a large high school to determine if the proport…
chi - square test for homogeneity because the data come from independent random samples
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which statement best describes whether the line shown on the graph belo…
approximately half the data points lie on either side of the line
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a school administrator believes that 80% of the students at his large s…
No, the random condition is not met.
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is there an association between grade level and whether the student mak…
The first option: \(H_0\): There is no association between grade level and whether the student makes their bed in the morning. \(H_a\): There is an association between grade level…
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the line (select) is is not (select) the best fit because (select)
The line is not the best fit because it does not pass through or near most of the data points in a way that minimizes the distance between the line and the data points.
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select the word or phrase that is redundant and can be removed without …
combustible
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russia and japan quick check which of the following best describes the …
Warriors served the shogun throughout the country, which meant they purchased goods throughout Japan.
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a guidance counselor selected random samples of 25 ninth graders, 25 te…
We reject the null hypothesis \(H_{0}\). There is sufficient evidence at the \(\alpha = 0.05\) significance level to conclude that there is a difference in the distribution of job…
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sylvia wants to construct a display to represent her sons height each y…
C. A line graph would be most appropriate because the data shows a trend over time.
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after a product recall, a company solicits feedback from a random sampl…
Yes, all of the conditions for inference are met.
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after peering into a wishing well, jocelyn hypothesizes that the distri…
\(H_0:p_{quarter}=0.5,p_{dime}=0.2,p_{nickel}=0.2,p_{penny}=0.1\) \(H_a:\text{Not all of the }p_i\text{s are as stated}\) (corresponding to the first option in the multiple - choi…
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determine which of the following line graphs represents the week of the…
B
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a large group of workers is divided into three departments: those who w…
No, the Large Counts condition is not met.
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a politician selects a random sample of 306 voters from her state. for …
All conditions for inference are met.
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a doctor wanted to study the effect of four different treatments on men…
chi - square test for homogeneity because the data come from independent treatment groups
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question 7. determine which of the following line graphs represents the…
B
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determine which of the lines best represents the line of fit for the da…
Line C best represents the line of fit for the data.
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you are tracking the temperature in new york city over a 24 - hour peri…
- Midnight to 6 am: Increasing - 6 am to 12 pm: Decreasing - 12 pm to 3 pm: Increasing - 3 pm to 6 pm: Decreasing - 6 pm to midnight: Decreasing
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a guidance counselor selected random samples of 25 ninth graders, 25 te…
There were more 9th and 10th graders than expected who did not have a job, and there were more 11th and 12th graders than expected who did have a job.
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a survey is conducted to determine if there is a difference in the prop…
\(\chi^{2}=0.19\), \(df = 2\)
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conversation: juan: buenos días, carmen. ¿qué hora es? carmen: son... o…
d. Son las diez menos diez
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a restaurant manager suspects that service declines during off - peak h…
Yes, all three conditions for inference are met.
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ms. truman has always provided her statistics students with a small ind…
\(H_0\): There is no association between index card size and grade. \(H_a\): There is an association between index card size and grade.
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students with a small index card for each exam. the students are permit…
Yes, the smallest expected count is \(5\), so all expected counts are at least \(5\).
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a restaurant manager suspects that service declines during off - peak h…
\(\chi^{2}=15.82\). The \(P\) - value is between \(0.0025\) and \(0.005\).
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a survey is conducted to determine if there is a difference in the prop…
There were more students than expected who do volunteer, and more parents and teachers than expected who do not volunteer.
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a guidance counselor selected random samples of 25 ninth graders, 25 te…
There were more 9th graders than expected who did not have a job, and there were more 10th, 11th, and 12th graders than expected who did have a job.
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a survey is conducted to determine if there is a difference in the prop…
There is not convincing evidence that the distribution of responses for the population of all students, parents, and teachers of this large high school differs.
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draw a line of best fit on the scatterplot. using your line of best fit…
\(290\)
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does the line accurately represent the data on the scatterplot? (select…
No
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the table below shows the number of times the dishwasher was used in th…
0.5 gallon
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a guidance counselor selected random samples of 25 ninth graders, 25 te…
There were more 9th graders than expected who did not have a job, and there were more 10th, 11th, and 12th graders than expected who did have a job.
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a survey is conducted to determine if there is a difference in the prop…
There is not convincing evidence that the proportion of these students, parents, and teachers who volunteer at least once a month differs.
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question 1 - 8 in a nonfiction passage describing the effects of climat…
A. Unyielding and unstoppable
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more than an explorer john wesley powell (1834 - 1902) was perhaps the …
1. b. intensely energetic 2. c. greatest 3. c. nameless 4. d. frightful 5. b. eager
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post - video question: what does the termventricle mean in latin? small…
small belly
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null hypothesis is rejected with a level of significance of 0.05. is it…
A. Yes, the claim would be rejected because the P - value would be less than \( 0.10 \).
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choose the correct answer below oa. decreasing a increases the probabil…
D. Decreasing $\alpha$ decreases the probability of rejecting the null hypothesis. This the complement, not rejecting the null hypothesis, which could increase the null hypothesis…
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30 multiple choice 1 point what does hale mean when he says people fear…
They see it as a death sentence.
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explore - part 2 the scatter plot and line of fit show how joes monthly…
1. Interpolation 2. \(y=\frac{250}{7}x+\frac{4650}{7}\) (or approximately \(y = 35.71x+664.29\)) 3. Approximately \(\$878.57\) 4. Extrapolation
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explore - part 1 the scatter plot for the data on ice cream sales is sh…
1. \((60,60)\) and \((80,120)\) (other valid pairs are possible) 2. Slope \(=3\), \(y\) - intercept \(=-120\) 3. For every 1 - degree Fahrenheit increase in temperature, ice - cre…
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name: algebra cc date: standards: a.dsr.10.7 distinguish between correl…
- For \( r = 1 \): Number of hours studied and test scores (assuming a perfect linear increase). - For \( r = 0 \): Number of books read and shoe size.
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5 multiple choice 1 point what does proctor mean by his last line in ac…
The court honors lies and punishes the good.
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2 multiple choice 1 point what does proctor mean when he shouts god is …
He feels there is no more justice/goodness left.
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read the following from act 1, scene iii: macbeth: aside if chance will…
prompting
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starting at noon, hunter observed the amount of snow on his lawn during…
The amount of snow on the lawn at 1 p.m.
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5. the table models the height of a remote - control helicopter over 20…
The average rate of change is $- 1.2$ feet per second. This means that, on average, the height of the remote - control helicopter is decreasing at a rate of $1.2$ feet per second …
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joseph is preheating his oven before using it to bake. joseph created t…
The oven's temperature after 1 minute.
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theres a roughly linear relationship between the number of times a spec…
The number of times the cricket could be expected to chirp in one minute if it's \(80^{\circ}\text{F}\).
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theres a roughly linear relationship between the number of times a spec…
The \(x\)-value when \(y = 80\) represents the number of times the cricket chirps per minute when the temperature is \(80\) degrees Fahrenheit.
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select the outlier in the data set. 714 889 978 94 888 947 953 880 if t…
The outlier is \(94\). If the outlier were removed from the data set, the mean would increase.
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select the outlier in the data set. 881 999 997 811 780 91 979 754 if t…
The outlier is \(91\). If the outlier were removed from the data set, the mean would increase.
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starting at noon, fatoumata observed the amount of snow on her lawn dur…
The amount of snow on the lawn at 12:01 p.m.
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which of these graphs represents the residual plot for a scatter plot t…
A. Graph A
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the picture of dorian figurative language quiz match the meaning with t…
1. b. Metaphor 2. a. Simile 3. c. Hyperbole 4. c. Personification 5. a. Understatement 6. d. Onomatopoeia 7. d. Alliteration 8. c. Personification 9. a. Alliteration 10. d. Hyperb…
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2. corinne planea unas vacaciones en la playa para julio y está analiza…
B. Whispering Palms
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the word exacerbate is derived from the combination of the prefix \ex-\…
To make a situation worse or more intense
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match the correlation coefficient to the interpretation of its value. l…
A) \(r = 0.88\) → 5. Strong positive linear correlation B) \(r = 0.52\) → 4. Moderate positive linear correlation C) \(r=-0.91\) → 2. Strong negative linear correlation D) \(r=-0.…
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3 multiple choice 1 point read the following from act i, scene iii (chu…
The comparison of honors to clothes that don’t fit creates an uncomfortable mood.
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1. the solution to \\( \\frac { 2 } { 3 } ( 3 - 2 x ) = \\frac { 3 } { …
None of the options A, B, C, D are correct. There might be a mistake in the problem - writing or option - setting. If we assume there was a typo in the original equation, for exam…
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sea, died on it, and was buried in it.\ well, today we can say of the c…
It emphasizes the bravery and dedication of the Challenger crew.
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prefixes and suffixes are important in science to help understand the m…
D. air
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20. the berlin conference of 1884 - 1885 was held to: a. divide africa …
20. A. Divide Africa among European powers 21. C. China 22. C. China 23. C. Imperialism 24. C. Latin America
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1 \some historians believe the confederacy first came together about 90…
A. A political and cultural alliance
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we, therefore, the people of the state of south carolina, in convention…
D. relationship between the federal government and the states
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correlation coefficient which value is the best estimate of the correla…
D. \(r = 0.95\)
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1. the assassination of which leader was the immediate cause of world w…
1. B. Archduke Franz Ferdinand 2. B. Germany, Austria - Hungary, Italy 3. A. Great Britain, France, Russia 4. C. World War I
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association vs. causation which example best describes causation rather…
B. The number of miles driven and the amount of gas used
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interpreting scatter plot & line of best fit a running club collected d…
overpredicts
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a veterinarian in newberg treats a number of different kinds of animals…
\(68\%\)
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richmond university offers four applied majors and monitors the number …
$29\%$
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ariana recently emptied her coin jar and counted the coins. coin jar co…
\(73.53\%\)
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clarence, who has five different fruit trees growing in his yard, kept …
\(30\%\)