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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the boxplot below displays the arm spans for 44 students. the five - nu…
Approximately 25% of the arm spans are less than 180 cm.
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thirteen students in a statistics class were asked how many siblings th…
0, 2.5, 3, 4, 6
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joe is interested in the prices of homes sold in his area. he found a l…
The mean is greater than the median.
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a 10 - item statistics quiz was given to 30 students. the table below g…
8.5
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as an introduction to probability, a student is asked to roll a fair, s…
5
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the parallel dotplots below display the number of cars parked for sever…
None of the given statements are true.
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27. making an argument your friend says that a margin of error can be a…
1. No 2. The expression is \(4n\) 3. The sample size must be increased 4 times to cut the margin of error in half.
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25. error analysis in a random sample of 2500 consumers, 61% prefer gam…
For 25: The error was using the wrong margin - of - error formula. The correct interval is between $59.09\%$ and $62.91\%$. For 26: The error was using the wrong margin - of - err…
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you roll a 6 - sided die. what is p(6 or even)? write your answer as a …
50%
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unit: discovering implied meaning progress: the movement of the progres…
A bone in the wrist of pandas evolved into an extra thumb.
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during a presidential debate, fran agreed with everything said by her p…
A. with empathy
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use the accompanying radiation levels (in \\(\\frac{w}{kg}\\)) for 50 d…
60
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use z scores to compare the given values. the tallest living man at one…
Since the z - score for the tallest man is $z = 10.74$ and the z - score for the shortest man is $z=-16.50$, the shortest man had the height that was more extreme.
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identify the sampling techniques used, and discuss potential sources of…
What type of sampling is used? B. Cluster sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is inte…
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read the excerpt from chapter 2 of night. it took us a long time to rec…
B. The author is able to personalize the event by using the words we and us.
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each dot plot below represents a different set of data. order the data …
Top dot - plot, Middle dot - plot, Bottom dot - plot
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the accompanying data and frequency distribution are 45 commute times t…
The histogram C; approximately normal; appears
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two events, x and y, are independent of each other. p(y) = 1/8 and p(x …
0.5
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the weather forecast for next season calls for a 10% chance of wind, a …
Wind is predicted for 9 days. Rain is predicted for 18 days. Cloudiness is predicted for 27 days. Sunshine is predicted for 36 days.
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identify the population and the sample. describe the sample data set. a…
Identify the population: all law firms in the country Identify the sample: the law firms that were surveyed Describe the sample data set: D. The average hourly billing rate for pa…
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determine whether the data set is a population or a sample. explain you…
D. Population, because it is a collection of the number of floors for all homes in the town.
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determine whether the statement is true or false. if it is false, rewri…
The statement "A graph of the cumulative frequencies can decrease from left to right" is false. A true statement is: A graph of the cumulative frequencies starts at the lower boun…
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which is one difference between a graphic novel and a memoir? only memo…
A. Only memoirs are about nonfiction, or true, events.
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based on the scatter plot below, which is a better prediction for x whe…
5
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why is the image of the setting sun most likely not described in great …
It is a part of the plot that does little to contribute to the theme.
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find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
$55.4$
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you pick a card at random from an ordinary deck of 52 cards. if the car…
6
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which of the following statements are true about the boxplot shown here…
All of the statements (I, II, and III) are true, so the answer is I and II and III.
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here is a table showing all 52 cards in a standard deck. suppose one ca…
(a) $\frac{1}{13}$ (b) $\frac{1}{2}$ (c) $\frac{7}{13}$
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choose all values of the correlation coefficient, r, that indicate a st…
B. \(r=-0.85\), D. \(r = 0.90\)
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mrs. gomes found that 40% of students at her high school take chemistry…
0.213
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the histogram to the right represents the weights (in pounds) of member…
20
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topic: measures of center progress: the movement of the progress bar ma…
The range is 50 and the midrange is 40.
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a survey was conducted at a high school to study which instruments stud…
7.50%
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which of the following uses the collective noun \government\ correctly?…
Government is meant to be ruled by the people.
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determine whether the statement is true or false. if it is false, rewri…
A. The statement is false. The graph of cumulative frequencies always starts at the lower boundary of the first class and increases to the upper boundary of the last class.
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using repetition means to read, write and __________the information to …
B. say
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in a recent year, the scores for the reading portion of a test were nor…
$0.1623$
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ian counted the number of problems on each of his tests. problems per t…
5
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mrs. vega, the science teacher, informed her students of their scores o…
3
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mrs. petersen kept track of her students scores on last years final exa…
32
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allie found a list of the number of roller coasters at each amusement p…
5
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a museum curator counted the number of paintings in each exhibit at the…
13
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the librarian at the public library counted the number of books on each…
6
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principal kirby reported the state test scores from some students at he…
10
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shawna counted the number of pairs of shoes for sale at each of the sho…
4
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paula ran a video game competition and recorded the scores of all the c…
110
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molly found out the sizes of all the clubs at her school. club sizes (n…
8
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the owner of a plant nursery wrote down the number of roses on each bus…
0
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a cookie factory monitored the number of broken cookies per pack yester…
3
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a pet store owner had her staff count the number of fish in each tank. …
21
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mr. dalton, a p.e. teacher, wrote down how much weight each of his stud…
12
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a crayon factory monitored the number of broken crayons per box during …
9
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julian counted the number of pieces of pepperoni on each pizza he made.…
4
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dr. hampton, a pediatrician, weighed all the children who recently visi…
85
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a veterinarian weighed all the dogs that visited his office last month.…
5
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question 7 what does crowdsourcing mean? a creating exclusive high - en…
B. Outsourcing tasks to a large, undefined group of people
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confederation gave the national government was the authority to con arm…
- The national government had to rely on optional payments from state governments. - The Congress of the Confederation did not have enough money to provide for national defense.
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the 154 tenth - graders at wilson high school were polled on whether th…
What is the probability that a randomly - chosen tenth - grader is male? $\frac{40}{77}$ What is the probability that a randomly - chosen tenth - grader is male given that the ten…
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what is meant by the negation of a proposition? make up an example of a…
D. Given the proposition "The product of two negative numbers is a positive number," the negation would be "The product of two negative numbers is not a positive number."
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at mountain high school, the students were surveyed about their partici…
\(\frac{9}{33}\)
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try this: fill in the possible outcomes for the cards and spinner below…
(heart, 1), (heart, 2), (heart, 3), (club, 1), (club, 2), (club, 3), (diamond, 1), (diamond, 2), (diamond, 3), (spade, 1), (spade, 2), (spade, 3)
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probability and sample space diagrams as the number of possible outcome…
| | Heart | Club | Diamond | Spade | |---|---|---|---|---| | 1 | Heart - 1 | Club - 1 | Diamond - 1 | Spade - 1 | | 2 | Heart - 2 | Club - 2 | Diamond - 2 | Spade - 2 | | 3 | Hear…
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match each term with its definition or description. evacuation radar bl…
evacuation - the process of removing something to safety radar - a device that uses radio waves to detect aircraft blitzkrieg - a German term meaning "lightning war" isolationism …
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the anderson family went to destin, florida for a summer vacation. the …
7. 94°F 8. a. The mean and the median are equal. 9. False. The correct statement is: The mean of the data set decreases with the addition of Saturday's temperature, and the median…
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i - ready identifying central idea - quiz - level d a shining glowworm …
dirty
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what does eliably\ mean in these sentences? experts reliably report wha…
in a way that can be trusted
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the opposite of simpático in meaning is a. simpática b. serio c. antipá…
C. antipático
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probability and tree diagrams use a probability tree to help answer the…
1. $\frac{1}{8}$ 2. $\frac{7}{8}$ 3. $\frac{1}{4}$ 4. 0 5. $\frac{5}{9}$ 6. $\frac{7}{9}$ 7. $\frac{2}{9}$ 8. $\frac{2}{9}$
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probability and tree diagrams use a probability tree to help answer the…
1. $\frac{1}{8}$ 2. $\frac{7}{8}$ 3. $\frac{1}{4}$ 4. 0 5. $\frac{5}{9}$ 6. $\frac{7}{9}$ 7. $\frac{2}{9}$ 8. $\frac{2}{9}$
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xyz warehouse is looking for machine operators. no experience required.…
1. C. to advertise jobs 2. D. can be talked about and agreed upon 3. B. restaurant serving experience
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machine operators xyz warehouse is looking for machine operators. no ex…
1. C. to advertise jobs 2. d. can be talked about and agreed upon
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probability and tree diagrams use a probability tree to help answer the…
1. \(\frac{1}{12}\) 2. \(\frac{7}{12}\) 3. \(\frac{1}{4}\) 4. \(\frac{3}{4}\) 5. \(1\) 6. \(0\) 7. \(\frac{1}{3}\) 8. \(0\)
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(01.04 mc) read the sentence below. which type of context clue is used …
A. Antonym context clue
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program areas: all ctae program areas instructions: read the material a…
1. Newspapers, magazines, radio ads, websites, online ads, employment websites, local job fairs, career fairs, networking. 2. Ask for places to volunteer. 3. Talking with people y…
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a liquid - dispensing machine has been designed to fill bottles with 1.…
D. In control, because none of the three warning signals detected a change.
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a liquid - dispensing machine has been designed to fill bottles with 1.…
A. Out of control, because there are nine consecutive points either above or below the mean.
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a gear has been designed to have a diameter of 3 inches. the standard d…
D. In control, because none of the three warning signals detected a change.
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• probability and tree diagrams • lets look at the previous example wit…
1. $\frac{5}{8}$ 2. $\frac{3}{4}$ 3. $\frac{23}{24}$ 4. $\frac{5}{6}$
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use the normal distribution to the right to answer the questions. (a) w…
(a) 34.46% (b) 774
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use the normal distribution of sat critical reading scores for which th…
(a) $81.46\%$ (b) $312$
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assume a member is selected at random from the population represented b…
$0.1012$
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assume a member is selected at random from the population represented b…
$0.4021$
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the amounts of time per workout an athlete uses a stairclimber are norm…
(a) $0.2843$ (b) $0.3413$ (c) $0.1265$
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a) identify the independent (x) and dependent (y) variables in this sit…
# Explicación: ## Paso1: Identificar variables La longitud del fémur es la variable independiente $x$ y la altura es la variable dependiente $y$. ## Paso2: Escribir pares ordenado…
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class e general knowledge question #31 / 50. if you see a fluorescent y…
# Breve explicación: Los signos de color amarillo - verde fluorescente indican una alta prioridad en la advertencia de actividades como la presencia de escolares, peatones o cicli…
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the monthly utility bills in a city are normally distributed, with a me…
0.0062
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question 3 of 20 which of these sentences is closest to the meaning of …
B. I already have Enrique Iglesias' latest album.
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the monthly utility bills in a city are normally distributed, with a me…
0.6911
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part 2: the essence of obedience the essence of obedience is that a per…
C. The person doesn't feel responsible for what they were ordered to do
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23. one week in october in iqaluit, nunavut, the daily high temperature…
$-0.6^{\circ}C$
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ritornello 3 is followed by the b section, in which the chorus sings th…
with an ascending motive
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in a recent year, the scores for the reading portion of a test were nor…
$0.0188$
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in a recent year, the scores for the reading portion of a test were nor…
$0.7498$
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a magazine published a list consisting of the state tax on each gallon …
D. No, the value of 27.3 cents is not the mean because the 50 amounts are all weighted equally in the calculation, but some states consume more gas than others, so the mean amount…
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class e general knowledge question #14 / 50 if you drive past the exit …
A. Go on to the next exit.
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band members are selling magazines to raise $150 for a field trip. the …
C. about 7%
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in a recent year, the total scores for a certain standardized test were…
0.0181
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complete the text with the best conjunctive adverb. when chad and gwen …
C. Meanwhile
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class e general knowledge question #10/50 when you are driving, if you …
C. There is a downhill section of road ahead. If you are driving a large vehicle you should change to a lower gear to control your speed.