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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which is the first step for analyzing mathematical models? (1 point) de…
Define the problem and identify parameters
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if you are conducting a survey to determine which american cities are t…
citizens from various cities all across America
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which regression model best fits the data set? (2, 13), (4, 8), (5, 7.5…
linear
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use the exponential regression equation that best fits the data (10, 4)…
132.3
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the scatterplot shows the crime index for various cities compared to th…
500
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the meaning associated with a particular color is the same from culture…
- Question 7: B. False - Question 8: B. True
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what is the significance of a correlation coefficient of 0.3? (1 point)…
The points do not follow the line of fit, and the line is increasing.
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the average number of hours students spend on homework is an example of…
1. mean 2. random 3. methodology 4. sampling 5. response
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drag each correlation type to its matching graph. (1 point) negative co…
First graph: Negative Correlation; Second graph: No Correlation; Third graph: Positive Correlation
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which of these pairs of variables would you expect to be represented by…
the number of concert tickets purchased and the number of concert tickets still available for purchase
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bias in surveys can lead to a systematic error that skews the data in a…
1. bias 2. non - representative 3. median 4. non - response 5. inferential
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a movie producer conducted a survey after the screening of his movie to…
C. Good
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question 59 (mandatory) (1 point) a defense for criminal liability in w…
A. a good defense if the intoxication was involuntary.
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syntax & application (before reading): directions: combine sentences 1 …
Combined sentence: These acts meant that colonists had to pay taxes on basic things like tea, glass, and paper, which the colonists believed were unfair. Prediction: The colonists…
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drag each de to the correct box. students in three levels of art classe…
8%, 25.32%, 34.33%
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question 51 (mandatory) (1 point) what is the term that means that the …
C. Concurrence
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peyton farquhar was a well to do planter, of an old and highly respecte…
It brings the reader to the past to provide background information about the main character.
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what is the main goal of designing a sampling plan? a. to ensure the sa…
C. To obtain a sample that accurately represents the population
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which statement explains the difference between connotation and denotat…
Connotation is the feeling a word evokes, and denotation is the dictionary definition of a word.
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when is cluster sampling most useful? a. when the population is large a…
A. When the population is large and spread out over a wide area
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if a researcher selects every 10th person from a list for their sample,…
d. Systematic sampling
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which type of data collection method is closely associated with systema…
d. Selection of participants based on a fixed interval from a list
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question 44 (mandatory) (1 point) the least serious form of wrongdoings…
B. petty misdemeanors
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what role does probability play in sampling? a. it determines which sam…
C. It allows researchers to make inferences from a sample to the whole population
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what is a key factor in evaluating sampling strategies? a. the size of …
d. The potential for bias in the sampling method
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question 43 (mandatory) (1 point) crimes punishable by death or impriso…
B. felonies.
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which sampling method gives every member of the population an equal cha…
d. Random sampling
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which sampling method involves selecting entire groups or clusters at r…
B. Cluster sampling
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in which sampling method is the population divided into groups based on…
B. Stratified sampling
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in stratified sampling, how are strata defined? a. by selecting every n…
B. By characteristics shared within each group
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the entire group of individuals or instances about whom the research is…
1. population 2. representative 3. statistics 4. statistical
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question 37 (mandatory) (1 point) law may be broken down according to c…
B. Tort crimes and civil crimes
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the main goal of designing a sampling plan is to obtain a sample that r…
1. representative 2. accurately 3. biases 4. sampling 5. convenience
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sampling methods allow researchers to make inferences about a by studyi…
1. population; sample 2. Random 3. Stratified 4. Cluster 5. fixed
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using the table above, please find the rate of change and describe what…
The rate of change is \(20\). It means that the cost increases by \(20\) dollars per hour.
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question 14 (mandatory) (1 point) those convicted of misdemeanor offens…
C. Jails
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one of the negative symptoms of schizophrenia is an expressionaless fac…
1. An expressionless face 2. Positive
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read the following description of a data set. carson wonders how many t…
37
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11. solve the equation ( 5.3g + 9 = 2.3g + 15 ). a. find the value of (…
a. \(g = 2\) b. Substitute \(g = 2\) into the original equation \(5.3g + 9\) and \(2.3g + 15\). Calculate \(5.3\times2+9=19.6\) and \(2.3\times2 + 15=19.6\). Since they are equal,…
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based on the scatter plot below, which is a better prediction for x whe…
\(0\)
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for which of the following research objectives would a pie chart be mos…
C. Showing the composition of a whole
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when calculating the average score from a set of data, which formula is…
D. (Sum of values) / (Number of values)
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what is the equation of the trend line in the scatter plot? use the two…
\(y =-\frac{2}{3}x + 8\)
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what statistical tool is commonly used for visualizing the distribution…
d. Bar chart
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in data analysis, identifying patterns and trends is essential for: a. …
c. Drawing meaningful conclusions
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(a) which of the following must be true about the young familys and the…
The Young family earns less than about \(64\%\) of families in their county.
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from the sentence below, what does margins of society mean? \eric schlo…
C. Outsiders
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two grocery stores advertise the same sale on fruit. • store a advertis…
framing effects
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4/70. the following scatterplots have correlations ( r=-0.9, r = -0.6, …
a. \(r=-0.6\), b. \(r = 0.1\), c. \(r=0.6\), d. \(r=-0.9\)
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5. what kinds of reflections can be added to anecdotes to make them mor…
A. thoughts during the event, B. insights after the event ended, C. feelings during the event
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the data (in millions of dollars) are the values of 32 sports franchise…
| Class | Frequency | | ---- | ---- | | \(825 - 935\) | \(8\) | | \(936 - 1046\) | \(4\) | | \(1047 - 1157\) | \(4\) | | \(1158 - 1268\) | \(3\) | | \(1269 - 1379\) | \(3\) | | \(…
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according to levels of processing theory, information that is encoded m…
involves more meaningful analysis of the material
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b. compute the test statistic and associated p - value. (round each val…
B. We should reject $H_0$. There is sufficient evidence to conclude that the failure rate is different.
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a national chain of department stores ranks its 750,000 salespeople by …
(a) Chris had sales lower in value than about \(96\%\) of the salespeople. (b) Both Chris and Lucy had sales higher in value than the median.
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a quality - control manager at a widget factory knows that historically…
B. We should reject \(H_0\). There is sufficient evidence to conclude that the failure rate is different.
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the following two - way frequency table displays the number of adults a…
C. 65.1%
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(a) which of the following must be true about jims and melissas scores?…
(a) Melissa scored higher than the median and Jim scored below the median. (b) About \(29\%\) of the students who took the exam scored lower than Jim.
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susie calculated the probability of choosing an even number from a list…
D. \(\frac{13}{18}\)
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carters domestic policy lack of confidence in 1979, jimmy carter gave a…
B. Jimmy Carter
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for each of the following, determine if the observed p - value would re…
a. Reject \(H_0\) b. Do not reject \(H_0\) c. Do not reject \(H_0\) d. Reject \(H_0\) e. Do not reject \(H_0\) f. Do not reject \(H_0\)
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carters domestic policy lack of confidence in 1979, jimmy carter gave a…
C. "Crisis of Confidence"
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math | graded assignment | unit test, part 2 | unit 4 (score for questi…
a) The slope is \(5\) and the \(y\) - intercept is \(10\). b) The rate of change is \(5\) baskets per hour (it means the workers pick \(5\) baskets of berries each hour) and the i…
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what can you conclude? a. do not reject ( h_{0} ). there is sufficient …
D. Do not reject \(H_0\). There is insufficient evidence to conclude that \(p eq0.40\)
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math | graded assignment | unit test, part 2 | unit 4 (score for questi…
a. Slope \(m = 5\), \(y\) - intercept \(b = 10\). b. Rate of change is 5 (baskets per hour), initial amount is 10 (baskets at time \(x = 0\)). The rate of change means the workers…
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consider testing a population proportion with these hypotheses: $h_0:p …
a. \(z_0=-1.25\), \(P - value = 0.2112\) b. Do not reject \(H_0\). There is insufficient evidence to conclude that \(p eq0.40\) c. Rejection region: \(z_0\geq1.96\) or \(z_0\leq …
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(score for question 2: ___ of 4 points) 2. the average cost of a compac…
(a) A good scale for the \(y -\)axis is \(14000\) to \(19000\). (b) A good interval for the \(y -\)axis is \(500\).
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ethnicity and race are two words that mean the same thing. please selec…
F
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the simple interest formula is ( a = p(1 + rt) ). over the course of fo…
\(\$65,280\)
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after families, schools are perhaps the most important and obvious mean…
T.
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the economy of the 1970s turnoil of the 1970s crisis of confidence in t…
C. a "crisis of confidence"
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10. instead of waiting for instructions, the student took the ______ to…
10. b. initiative 11. c. Not easily convinced; having doubts 12. c. skeptical 13. a. Tenacity 14. b. tenacity 15. c. To be treated as unimportant or pushed off to the side
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the economy of the 1970s turmoil of the 1970s crisis of confidence in t…
the government
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read the passage and answer the following question(s). will you love me…
D. old age
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read the sentence from paragraph 12. do we participate in a politics of…
A. negativity and pessimism.
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many researchers argue that teens today have weaker social skills than …
Teens have weaker social skills.
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question 9 of 10 what could be used as a symbol in a story? a. an autho…
C. An artifact with special meaning
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suppose you were to create a scatter plot of outside temperature and am…
D. negative relationship; as the outside temperature decreases, the amount of the heating bill increases
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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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forty people were randomly sampled and surveyed as to the number of pet…
A.
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compute the standard deviation for the set of data. 2, 5, 6, 8, 14 a. 1…
B
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using the coordinates of two points (84,80) and (74,65), determine the …
A. The slope of the line is 1.5.
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the bar graph in the following graphic represents fictional net exports…
C. - 20 billion dollars
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when engaging in an introspective journey, what qualities are essential…
honesty and candid self - reflection
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personal fact sheet and resumes use the information below to answer the…
to provide a brief overview of qualifications
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personal fact sheet and resumes use the information below to answer the…
career objectives
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use the following source to answer question 3. people who feel a sense …
A. Nation
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which phrase from the sentence best reveals the meaning of the word bel…
C. threw herself, kicking and screaming
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which phrase is the best meaning of the word meticulous in this sentenc…
B. carefully precise
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which phrase from this sentence best reveals the meaning of the word im…
C. careful and reasoned planning
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life lesson: where does your passion start? use the information below t…
honesty and candid self - reflection
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is this a thesis statement? the government should subsidize college for…
yes
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mr. e pep talk: how important is the application? use the information b…
It can lead to negative consequences if a candidate exaggerates their qualifications or experiences.
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mr. e pep talk: how important is the application? use the information b…
ing every question truthfully and accurately
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mr. e pep talk: how important is the application? use the information b…
It helps ensure that references provide meaningful and positive feedback to potential employers.
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which is a thesis statement? the government should subsidize college fo…
The government should subsidize college for median - income Americans to help with the rising cost of tuition.
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question 5 describe how you would draw a line of best fit for a scatter…
To draw a line of best fit, observe the data trend and balance points above/below. To predict, use axis - intersection with the line.
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the scatterplot shows how many hours students practiced karaoke during …
\(67\)
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question 3 which scenario would most likely produce a scatterplot with …
Number of sick days vs. productivity
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question 2 a scatterplot shows hours spent practicing and score on a vi…
The score with zero practice
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chapter 5 truesdell test big business directions: please write your ans…
1. b. Preproduction; Production; Post - production 2. a. AMG 3. d. 35mm 4. California 5. a. Adobe 6. b. Gaffer 7. Building and maintaining professional relationships (in the film …