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. value that appears the most in a set of data √ b. data that can be e…
a. Mode b. Numerical data c. Non - uniform distribution (vague description) d. Median e. Mean Absolute Deviation f. Measure of dispersion (e.g., variance, standard deviation) g. S…
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actually has allergy? test shows allergy? yes 90% yes 8% no 10% no 92% …
The probability that a child will receive a positive test is $0.21$. For a child with a positive test, the probability that the child actually has a food allergy is approximately …
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how would you ask, \how are you?\ to the king of spain? ¿cómo estás tú?…
1. ¿Cómo está Ud.? 2. young person 3. Cierto
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the director of health services is concerned about a possible flu outbr…
$\frac{13}{17}$
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iron is essential to most life - forms and to normal human physiology. …
At least $75\%$ of the 45 adult females in the sample have daily iron intakes between $7.3$ mg and $22.1$ mg.
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1. there are two ways to speak to someone in spanish. what are they? ki…
1. B. formal and informal 2. A. usted 3. C. I introduce you to my mom.
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the director of health services is concerned about a possible flu outbr…
$\frac{39}{51}$
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monday: use context clue to help you understand what the bolded word me…
1. about to happen 2. A. Active
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players in a card game use the spinner below to determine how many card…
1.625
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
a. Using Chebyshev's rule, at least \(75\%\) of the observations lie within two standard deviations of the mean. Using the empirical rule, approximately \(95\%\) of the observatio…
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published the protocols of the elders of zion in english and promoted i…
A. Henry Ford
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a. compare the estimates given by the two rules for the percentage of o…
C. Chebyshev's rule is for any quantitative data set and gives the percentage of the least number of observations that are definitely included in the area. The empirical rule is f…
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
B. Chebyshev's rule is for any quantitative data set and gives the percentage that approximates the number of observations that could be included in the area. The empirical rule i…
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
B. Chebyshev's rule is for any quantitative data set and gives the percentage that approximates the number of observations that could be included in the area. The empirical rule i…
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
a. Using Chebyshev's rule, at least 75% of the observations in any data set lie within 2 standard deviations to either side of the mean. Using the empirical rule, approximately 95…
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choose the answer that best describes the chebyshevs rule and fill in t…
B. Chebyshev's rule says that at least 88.9% of the data values lie within three standard deviations to either side of the mean.
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choose the answer that best describes the chebyshevs rule and fill in t…
B. Chebyshev's rule says that at least \(88.9\%\) of the data values lie within three standard deviations to either side of the mean.
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box braids time (h) click the arrows to choose an answer from each menu…
The data in the dot plot are symmetric and have a median of 7 hours. Based on the shape of the data, the mean time will be equal to the median time.
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question 12, question choose the answer that best describes the chebysh…
C. Chebyshev's rule says that at least 89% of the data values lie within three standard deviations to either side of the mean.
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the dot plot shows the number of hours, rounded to the nearest half hou…
No, Alexis is not correct. The mean time is approximately \(6.83\) hours which is less than 7 hours.
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a distribution of data has 80 data values, a mean of 27.8 and a standar…
60
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use the information from section 3.3 to answer the following questions.…
a. D. At least 89% of the data values lie between 47.3 and 86.9. b. D. Approximately 99.7% of the data values lie between 47.3 and 86.9.
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use the empirical rule to answer the question below. the systolic blood…
C. Approximately 95%
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question 8, 3.4.158 roughly, when arranged in increasing order, the upp…
$Q_3$
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a. which measure of variation is preferred when the mean is used as a m…
b. interquartile range
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the heights, in feet, of 12 trees in a park are shown below. 8, 11, 14,…
The interquartile range helps tell the spread of the data around the median. The interquartile range, which is 14 feet, represents the middle 50% of the heights of the trees.
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a. which measure of variation is preferred when the mean is used as a m…
a. standard deviation b. interquartile range
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a. what type of descriptive measure is it? variation outlier median cen…
a. Variation b. D. The range of the middle 50% of the observations
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the dot plot below shows the lengths of 10 new afrobeats songs, rounded…
0.87
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complete parts a and b below regarding the interquartile range. a. what…
Variation
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martin puts two bowls of fruit out for his friends. the bowl of grapes …
$\frac{27}{250}$
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
Approximately 95%
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
a. Using Chebyshev's rule, at least \(75\%\) of the observations in any data set lie within 2 standard deviations to either side of the mean. The empirical rule gives an estimate …
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choose the correct answer below. a. no, extreme values are never outlie…
D. No, it is only a potential outlier. Further data analyses are necessary to determine if it is truly an outlier.
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iron is essential to most life forms and to normal human physiology. it…
3.6, 7.3, 11.0, 14.7, 18.4, 22.1, 25.8
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eld 2 - volunteering in an animal shelter name: ______ date: ______ per…
1. Juan fed cats. 2. Juan walked the dogs in the park. 3. Juan played with the puppies on the floor and washed their bowls. 4. Juan helped the employees at the shelter and carried…
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4. why did northern industrialists favor protective tariffs? higher pri…
Tariffs raised the cost of European goods so that more people would buy American goods.
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a supervisor wants to know the average number of hours worked by employ…
B. 9
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study to expect a quiz score of 83? answer attempt 2 out of 2 hours per…
4.5
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4. a bookshelf contains 9 mysteries, 7 biographies, and 4 science ficti…
$\frac{63}{380}$
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lukes math teacher plots student grades on their weekly quizzes against…
Approximately 4.28 hours
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a population of middle school students contains 160 sixth - graders, 18…
B. 8
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3. a coin is tossed two times, then a month of the year is randomly sel…
$\frac{1}{16}$
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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 79°F.
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20 (01.05 lc) which best describes what is meant by “conducting an audi…
Crossing out or checking off tasks on your list which are finished and complete
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kennedy has a part - time job at an ice skating rink selling hot cocoa.…
49
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traverion wants to find the answer to the question \how much money does…
The results do not represent the population because the sample does not represent professors from different areas.
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indigos math teacher finds that theres roughly a linear relationship be…
The number of hours a student should spend on their homework to expect a score of 81 on the quiz.
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2. a bag contains 40 slips of paper numbered 1 - 40. if one is randomly…
$\frac{27}{40}$ (assuming the intended number was 3 instead of 37 based on the options)
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amalie wants to know if students in her class prefer hot dogs or hambur…
The population is small enough to survey the entire group.
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a camp counselor is trying to determine, of the places they have previo…
campers who have gone camping before
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a landscaper wants to find the answer to the question \how much time do…
The survey results will be inaccurate because lawns in one neighborhood do not represent all types of lawns in a large city.
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question select the correct answer. how does the repetition of the word…
The repetition emphasizes hope and a unified vision for America.
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1. what is the probability of drawing a jack or a red card form a stand…
$\frac{7}{13}$
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charlotte is preheating her oven before using it to bake. charlotte wan…
The oven's temperature after 1 minute.
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a collection of sample data has 753 values. we are promised ___(a)___ _…
(a) B. at least (b) B. 75%
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31. if there are 200 students surveyed, how many chose snapchat? previo…
44
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compare chebyshevs rule and the empirical rule. a. compare the estimate…
a. Chebyshev's rule: At least \(75\%\) of the observations lie within 2 standard deviations of the mean. Empirical rule: Approximately \(95\%\) of the observations lie within 2 st…
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“the wifes story”by ursula le guin he was a good husband, a good father…
1. Point - of - view: First - person; Perspective: Wife's. 2. Gentle, positive, easy - going. 3. Respected leader (led singing at Lodge Meetings). 4. Happy.
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how did lincolns second inaugural address demonstrate his evolved under…
B. Promoted national unity after conflict C. Emphasized healing over punishment F. Advocated forgiveness and reconstruction
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the united states bureau of labor statistics estimates that employment …
B. False
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question number 3. given: p(e)=0.32, p(f)=0.42, and p(e∩f)=0.13. find p…
# Explanation: ## Step1: Recall conditional - probability formula The formula for conditional probability is $P(E|F)=\frac{P(E\cap F)}{P(F)}$. ## Step2: Substitute given values We…
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question number 2. given: p(e)=0.37, p(f)=0.53, and p(e∪f)=0.72. find p…
$0.20$
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quiz 2 (id 657919) due: sat sep 13 23:59 2025. until due: 1.4 days. res…
0.84
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quiz 2 (id 657919) due: sat sep 13 23:59 2025. until due: 1.4 days. res…
0.84
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question number 1. hospital records show that 16% of all patients are a…
None of the above.
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question number 12. a large - scale study conducted over a one - year p…
0.9418
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question number 11. the probability that a student correctly answers on…
0.72
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question number 10. the probability that a randomly selected person has…
0.2
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question number 10. the probability that a randomly - selected person h…
There seems to be an error in the provided options as the correct probability $P(H\cap R) = 0.05$ is not among them. If we assume there was a mis - typing in the problem - setup a…
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question number 9. the probability that a randomly selected person has …
0.50
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what is one way that a reader can uncover an authors meaning in a narra…
B. By looking at how the author develops the characters and setting.
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for context, jamie is a student that has class with both max and justin…
B. Max
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a population of middle - school students contains 160 sixth graders, 18…
14
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travenon wants to find the answer to the question how much money does t…
The results do not represent the population because not all college professors actually responded.
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a person wants to find the answer to the question how much time do peop…
The survey results will be inaccurate because lawns in one neighborhood do not represent all types of lawns in a large city.
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your understanding 1-2 assignment: audit your understanding 1-2 (practi…
In business and accounting, "on account" generally means a transaction where payment is deferred or an entry in an account related to such a deferred - payment transaction.
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explain the responsibilities of the judicial branch. (1 point) the judi…
The judicial branch is required to interpret the meaning of the laws and provide a ruling on court cases.
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read this excerpt. this pitcher gave all four of his children names tha…
A. he believed the extra Ks would help him continue to strike out players.
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read the end of the selection. when the author states, \chances are, th…
C. The players are good because of their skills, not their superstitions.
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in this part of the selection, what does the word \swing\ mean? a move …
C. hit at an object
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a dance student wants to know the favorite type of dance class for stud…
She could sample a proportional number of students in each type of dance class.
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39. which literary device is used in the phrase: \the flames rise, reac…
39. B. Personification 40. B. It creates a sense of fear and urgency 41. A. Life is fragile, and people are always at risk of damnation
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a supervisor wants to know the average number of hours worked by employ…
9
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a camp counselor is trying to determine, of the places they have previo…
campers who have gone camping before
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4. true or false: authors use different kinds of irony to create intere…
4. True 5. False 6. True 7. verbal irony
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16. which of the following inferences can be made from the text about t…
16. A. Mounds reflected both religious and political authority within Native societies 17. B. Related to ritual and religious practice 18. B. By presenting events in chronological…
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not a whole number because there is no whole number we can multiply by …
5.4
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11. part a: what is the central idea of the entire text? a the natchez …
11. Part A: B. The French presence brought the decline of these traditions. 11. Part B: A. "Elaborate funeral ceremonies for powerful members of Natchez society were held on the m…
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two athletes are training for a cycling race. each athlete recorded the…
(a) Athlete B (b) Athlete A (c) Athlete B (d) Athlete B
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the noon temperatures (in fahrenheit) for two cities were recorded over…
(a) City B (b) City B (c) City A (d) City B
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6. the graph gives a sales representatives distance from their home as …
a. 8 AM - 10 AM and 4 PM - 6 PM b. From 8 AM - 10 AM, the sales representative moves away from home. From 10 AM - noon, they stay at a location (distance from home is constant). F…
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1. what is the central idea of the entire passage? a all native america…
1. D. European contact led to both cooperation and conflict with the Natchez, Chickasaw, and Choctaw, which reshaped their communities. 2. C. Tensions between the French and Natch…
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select the graph that shows a negative relationship between the two var…
The second graph (the one with Distance from Equator on the x - axis and Temperature on the y - axis) shows a negative relationship between the two variables.
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is the given square root a whole number, or is it irrational? √25 is a …
5
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5b use the line of best fit to estimate the room temperature when there…
25
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what does the word \bicameral\ mean? * two bodies, or two houses two pe…
Two bodies, or two houses
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two english classes with the same number of students took a final exam.…
(a) Class A (b) Class B (c) Class A (d) Class B
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4. which of the following could be the equation for the line of best fi…
A. $y = 3x-20$
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two athletes are training for a cycling race. each athlete recorded the…
(a) Athlete B (b) Athlete B (c) Athlete A (d) Athlete A