Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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what was the median number of siblings?
\(3\)
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a random sample of 20 employees of a grocery delivery service was asked…
Minimum: \(9\) Lower Quartile: \(15\) Median: \(20\) Upper Quartile: \(28\) Maximum: \(49\)
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commute time what was the longest amount of time a student in this clas…
59 minutes
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the students in a class collected data on the number of minutes some of…
\(2.5\)
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the students in a class collected data on the number of minutes some of…
3
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the bar graph shows the number of animals toby saw on a hike. there wer…
\(5\)
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a teacher put all her students quiz scores up on the dot plot below. wh…
100
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in a third - grade classroom, the number of books read by each student …
The line - plot with \(2\) Xs above \(5\), \(5\) Xs above \(6\), \(4\) Xs above \(7\), \(2\) Xs above \(8\) and \(2\) Xs above \(9\) is the correct one.
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4. read this sentence from the article. these whale watchers are gettin…
4. D. traveling 5. B. Whale - watching trips give tourists the chance to see different kinds of whales and also many different kinds of wildlife.
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4. read this sentence from the article. these whale watchers are gettin…
4. D. traveling 5. A. Whale watching, popular since the 1950s, allows tourists to enjoy seeing whales in their native habitat.
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10 what does the term charismatic mean? a ordinary b charming c unattra…
B. Charming
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4) quincy has the following data: 77 77 64 75 61 68 68 77 c 4) if the m…
\(76\)
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deb has the following data: 52 53 50 54 62 b if the mean is 54, which n…
$53$
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ms. chang tracked the number of homework assignments for two math class…
Class 2
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the movie critic liked to count the number of actors in each movie he s…
\(34\)
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for a fundraiser, the children in the art club made greeting cards and …
18
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read the passage from sugar changed the world. gandhi began to see that…
The evidence shows how Gandhi experimented with ways to assert one’s dignity and be free.
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read the passage from sugar changed the world on the day the coolies we…
Indians retained some of their individuality by being able to keep their names.
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10 in \ulysses,\ tennyson uses extended metaphor to convey meaning. in …
A. Reinforcing the speaker’s central message
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when hana goes to the mall, she always buys the same lunch and also buy…
B. The slope approximates the cost of Hana’s lunch; D. The \(y -\)intercept approximates the cost of Hana’s lunch.
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sentences: complete the sentences with the best word. each word will be…
1. Dogmatic 2. Assess 3. Compile 4. Adhere 5. Absurd 6. Contempt 7. Alienated 8. Defect 9. Affluent 10. Doctrine
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a. as the average speed increases, so does the time he takes to get to …
B. As the average speed increases, the time he takes to get to school decreases.
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what elements does an effective interpretation of a quotation in a lite…
an explanation of the meaning in the interpretation, an explanation of the author's background, an explanation of the author's viewpoint
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civics chapter 4 section 3 homework assignment what does the protection…
Fines and bail must be appropriate for the crime committed.
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question 1 how do you distribute your money when using the 50 - 20 - 30…
50% should be used for fixed/essential expenses, 20% for savings, and 30% for flexible expenses. # Question 2
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8. the graph shows the number of kilometers gina swims. what is the slo…
- **Part A**: The slope is \(4\). - **Part B**: Yes, the slope between \((1,4)\) and \((3,12)\) is the same as the slope between \((3,12)\) and \((4,16)\). The slope between \((1,…
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a magazine provided results from a poll of 500 adults who were asked to…
A. The statement indicates that the interval \(11\% \pm5\%\) is likely to contain the true population percentage of people that prefer chocolate pie.
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investing in mid - cap and large - cap companies means select a respons…
anticipating steadier growth over time.
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rashids math teacher plots student grades on their weekly quizzes again…
74
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7. higher order thinking you use a garden hose to fill a circular wadin…
a. The slope of the line is \(2.2\). b. The slope means that the depth of water increases by \(2.2\) cm per minute. c. It will take \(38\) minutes to fill the pool.
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some states now allow online gambling. as a marketing manager for a cas…
a. \(271\) b. \(167\)
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6. a machinist measures the thickness of a grinding pad every week. the…
**Part A**: The slope of the line passing through \((3,12)\) and \((4,16)\) is \(4\). **Part B**: The slope between \((1,4)\) and \((3,12)\) is \(\frac{12 - 4}{3 - 1}=4\), and the…
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the carter family is selecting a furniture set. a furniture set has a b…
\(8\)
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question 3 of 6 investing in mid - cap and large - cap companies means …
anticipating steadier growth over time.
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what type of correlation (association)? the outside temperature and the…
Negative correlation
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a point far away from the other data points is considered a(n)_____? sc…
outlier
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which description matches the scatter plot? positive association with t…
Negative Association with two Clusters one between 0 and 0.5 on the x axis and the other between 0.5 and 1 on the x axis and two Outliers.
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in a poll of 520 human resource professionals, 45.8% said that body pie…
a. \(238\) b. \(0.402 < p < 0.514\)
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a television show conducted an experiment to study what happens when bu…
Fail to reject the null hypothesis. There is not sufficient evidence to reject the claim that buttered toast will land with the buttered side down \(50\%\) of the time. For the se…
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describe the association shown in the scatter plot. the scatter plot sh…
La opción correcta es la quinta (azul): "The scatter plot shows a negative linear association between driver age and max distance to read sign because as the age of the driver inc…
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what is a trend line that shows the most accurate relationship between …
line of best fit
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in a scatterplot, an outlier... ..is something we didnt learn 8th grade…
...is a point that is far outside the main cluster of points/ordered pairs
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in a study of cell phone usage and brain hemispheric dominance, an inte…
\(0.002\)
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what is the correlation? no correlation positive correlation negative c…
A. No correlation
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a random sample of 862 births in a state included 428 boys. construct a…
$0.465 < p < 0.531$
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what type of association does this graph have? none positive negative a…
A. none
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a magazine provided results from a poll of 200 adults who were asked to…
A. A 90% confidence interval must be wider than an 80% confidence interval in order to be more confident that it captures the true value of the population proportion.
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suppose that in a random selection of 100 colored candies, 24% of them …
C. Fail to reject $H_0$. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to $27\%$
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suppose that in a random selection of 100 colored candies, 24% of them …
The P - value for this hypothesis test is \(0.497\)
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express the confidence interval ( 0.333 < p < 0.777 ) in the form ( hat…
\(0.555\pm0.222\)
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public health officials believe that 90.9% of children have been vaccin…
A. We concluded that the actual percentage of vaccinated children is below 90.9%. A 1.3% drop would probably not be considered noteworthy but in context, if 1,000,000 children are…
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public health officials believe that 90.9% of children have been vaccin…
B. There is only a 3.2% chance of seeing a sample proportion as low as 89.6% vaccinated by natural sampling variation if 90.9% have really been vaccinated.
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use the confidence interval to find the margin of error and the sample …
The margin of error is $0.19$. The sample mean is $1.745$.
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trials in an experiment with a polygraph include 98 results that includ…
We fail to reject \(H_{0}\). There is not sufficient evidence to support the claim that the polygraph results are correct less than \(80\%\) of the time.
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ten words in context in the space provided, write the letter of the mea…
1. C. ridiculous 2. C. to stick 3. C. rich 4. A. to push away 5. A. to judge 6. C. to put together
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and each separate dying ember wrought its ghost upon the floor. eagerly…
The speaker is mourning and sorrowful, made worse by the eerie atmosphere around him.
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they can still be defined by using words around them as context. a para…
Perished
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and each separate dying ember wrought its ghost upon the floor. eagerly…
The speaker is mourning and sorrowful, made worse by the eerie atmosphere around him.
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a paragraph reads: \if all else perished (died), and he remained, i sho…
Perished
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trials in an experiment with a polygraph include 98 results that includ…
The P - value is $0.195$
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trials in an experiment with a polygraph include 98 results that includ…
The test statistic $z\approx - 0.86$
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trials in an experiment with a polygraph include 98 results that includ…
B. \(H_0:p = 0.80\), \(H_1:p<0.80\)
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a genetic experiment involving peas yielded one sample of offspring con…
\(P - value = 0.064\)
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a genetic experiment involving peas yielded one sample of offspring con…
\(z = 1.52\)
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a genetic experiment involving peas yielded one sample of offspring con…
A. \(H_0: p = 0.26\), \(H_1: p eq0.26\)
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a random sample of 870 births included 430 boys. use a 0.10 significanc…
D. The results do not support the belief that 51.3% of newborn babies are boys; the results merely show that there is not strong evidence against the rate of 51.3%.
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a random sample of 870 births included 430 boys. use a 0.10 significanc…
B. Fail to reject \(H_0\). There is not sufficient evidence to warrant rejection of the claim that \(51.3\%\) of newborn babies are boys.
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a random sample of 870 births included 430 boys. use a 0.10 significanc…
The P - value for this hypothesis test is $0.263$
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a random sample of 870 births included 430 boys. use a 0.10 significanc…
The test statistic for this hypothesis test is $-1.12$.
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a random sample of 870 births included 430 boys. use a 0.10 significanc…
C. \(H_0:p = 0.513\), \(H_1:p eq0.513\)
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complete the text with the better adverbial conjunction. in 2015, many …
Meanwhile
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if children were educated in the 17th, it was typically done at home by…
- First question: B. False - Second question: C. student learning objective - Third question: A. True
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a scientist wants to find the average weight of fish living in a large …
(a) pounds, ounces (b) Randomly pick 25 fish from the entire pond and weigh each of them.
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a box is filled with 4 red crayons, 8 blue crayons, and 2 yellow crayon…
\(\frac{3}{7}\)
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a basket is filled with 8 white eggs and 10 brown eggs. half of the whi…
\(\frac{2}{9}\)
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a bag contains ten balls labeled 1 through 10. one ball will be randoml…
\(\frac{3}{10}\)
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a box contains ten cards labeled q, r, s, t, u, v, w, x, y, and z. one …
\(\frac{2}{5}\)
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a container starts with 8 milliliters of water in it. diego is dropping…
Plot the points \((0,8)\), \((1,11)\), \((2,14)\), and \((3,17)\) on the graph.
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theres a roughly linear relationship between the length of someones fem…
The expected height for someone with a femur length of \( 186.26 \) centimeters.
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question theres a roughly linear relationship between the number of tim…
The number of times the cricket chirps in one minute.
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question zahra is driving on a long road trip. she wrote an equation to…
The number of gallons in the tank after one hour.
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question benjamins math teacher finds that theres roughly a linear rela…
The number of hours a student should spend on their homework to expect a score of 98.
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zendayas math teacher finds that theres roughly a linear relationship b…
The change in expected quiz score for every additional one hour students spend on their homework.
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question guadalupes math teacher finds that theres roughly a linear rel…
A student's expected quiz score if they spent no time on their homework.
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4 use the data from the frequency table to complete the histogram. 5 wh…
Each interval represents a range of math test scores.
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2 which expression is equal to: b + 4 a 48 b 4b c b + b + b + b d 4 + b…
D. \(4 + b\) ### Question 3
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read the passage from sugar changed the world. with their victory, the …
Second option: They use a primary source to show that a song was spreading the idea of equality across the Caribbean. Third option: They use a secondary source to show that the id…
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question 24 of 30 in which system does the government control the means…
C. Communism
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question 15 of 30 median age of the u.s. population in 1850 = 20 in 190…
D. Life expectancy is increasing.
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question 4 of 10 what is meant by the term bystander effect? a. people …
B. Individuals tend to take more responsibility for reporting crimes than do groups of people.
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what is meant by cultural lag? a. every culture has values and norms. b…
D. Some aspects of culture change more slowly than others.
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read the sentences. then, use synonym clues to determine the meaning of…
hatred
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read the sentences. then, use synonym clues to determine the meaning of…
strong hostility
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read the sentence. then, use the drop - down menus to answer the questi…
commas
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the dataset 3, 6, 2, 8, 6, 6, 9, 10, 3 represents the scores on the mos…
None of the five - number summary (minimum, \(Q1\), median, \(Q3\)) changes.
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use the table to answer the question. the table displays the screen tim…
The interval \(15 - 19\) will have the highest bar on the histogram.
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the dot plot shows the number of hours spent studying for an assessment…
More students studied three hours or less than the number of students who studied four hours or more.
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question 8 of 10 what is meant by the term self - fulfilling prophecy? …
D. People tend to meet their own expectations.
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what is the five - number summary for this set of test scores? 90, 95, …
Minimum: \(74\), Q1: \(85\), Median: \(90\), Q3: \(96\), Maximum: \(99\)
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you have read about reasons as to why we sample rather than working wit…
- Simple Random Sampling: Selecting participants for a survey from a large group of people (e.g., 1000 students in a school) by using a random number generator to pick 100 student…