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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complete the equation describing how x and y are related. | x | y | |--…
4
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remember for problems 11-14, subtract. 11. $8,362 - 6,425$ 12. $46,334 …
11. $1,937$ 12. $40,913$ 13. $68,668$ 14. $37,594$ 15. A. $|1.25| = |-1.25|$, C. $|-1.25| = 1.25$, E. $|1.25| = 1.25$ 16. No, she does not have enough tape. The total perimeter re…
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example 1 determine whether each scatter plot shows a positive, negativ…
1. Negative correlation: As exercise time increases, calories burned decrease. 2. No correlation: There is no consistent relationship between number of books borrowed and library …
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read the excerpt from part two of trifles. county attorney. oh, i guess…
B. It is dramatic irony because the audience knows that the County Attorney does not actually mean what he is saying.
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classical rootsword studyvers, vert—to turnthis latin root appears in r…
1. We plan to **traverse** the countryside by bicycle this summer. 2. Division is the **inverse** of multiplication. 3. The teacher asked each student to recite a **verse** of a f…
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read the excerpt from part one of trifles. hale. \why—where is he?\ say…
O indicating
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a. roots, prefixes, & suffixes directions: write the meaning for each r…
1. hypo-: under, below; less than normal 2. logue: speech, word, discourse 3. rupt: to break 4. super-: above, over, beyond 5. sub-: under, below; secondary 6. hyper-: over, above…
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idioms in the passage about the worlds columbian exposition (see pages …
1. c. someone who is not easy to deceive 2. a. pay or contribute some money 3. h. in agreement 4. d. acted bravely or showed no fear 5. j. frustrated after several unsuccessful at…
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12-7az vocabulary1. data is information you collect. a line plot shows …
Players scored 3 goals in $\boldsymbol{4}$ soccer games. Players scored $\boldsymbol{7}$ goals in 1 soccer game.
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1) if a system of linear equations has one solution, what does this mea…
1. The two lines intersect at exactly one unique point (they are non-parallel and distinct). 2. The two lines are parallel and distinct, so they never intersect. 3. The two lines …
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synonyms from the word bank below, choose the word that has the same or…
1. detriment 2. venerate 3. avowed 4. laggard 5. perturb 6. invalidate 7. revert 8. incapacitate 9. skittish 10. hover 11. unison 12. oblique
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first read: concept vocabulary identify the choice that best answers th…
B. Maria saw the director's nod and gave the thumbs-up to Ben to raise the curtain.
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first read: concept vocabulary identify the choice that best answers th…
D. a text message
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13. choose the best answer: no taxation without ____ meant that the col…
representation
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argument: the use of language, reasoning, and evidence to influence the…
Regular exercise improves mental health in teenagers.
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name date period unit 4 lesson 9 cumulative practice problems 1. a grou…
1. - Number of friends: 2 - Berries per friend: $\frac{1}{2}$ pounds 2. Yes, 1 kilogram of soil can fit. The container's total capacity is $\frac{6}{5}$ (or 1.2) kilograms, which …
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the data below shows the number of jobs that a sample of people had in …
Five-number summary: Min: $5.00$ Q1: $6.00$ Median: $10.00$ Q3: $12.00$ Max: $14.00$ Correct boxplot: The third option (axis from 5 to 14, box edges at 6 and 12, median line at 10…
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in order to save up for a house, gavin set a budget for each years expe…
$\$150,000$
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question 10 which measure of the center (mean or median) is appropriate…
The median is more appropriate, because it usually changes less than the mean when comparing data with and without outliers.
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21. joy can choose to ride the bus, walk, or carpool to school on thurs…
### Tree Diagram Structure: ``` Start ├─ Thursday: Bus │ ├─ Friday: Bus → (Bus, Bus) │ ├─ Friday: Walk → (Bus, Walk) │ └─ Friday: Carpool → (Bus, Carpool) ├─ Thursday: Walk │ ├─ F…
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the movie theater in cedarburg keeps track of its ticket sales by genre…
10000 tickets
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d. sample standard deviation = 5.87 (round ae. population standard devi…
g. 5 h. 15.5 i. 35.5 j. yes
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how many fourths are equal to one half?
2
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in smithville, a town of 50,000 people, credit cards are the most popul…
Yes, the study design has multiple flaws: 1. **Convenience Sampling Bias**: Choosing only the first 3 people exiting at one random time means the sample is not representative of a…
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the percentage rounded to the nearest whole percent of persons from eac…
a. Mean = 25.3 b. Median = 25 c. Mode = 24 d. Sample Standard Deviation ≈ 5.87 e. Population Standard Deviation ≈ 5.81 f. Five-Number Summary: a. Minimum = 14 b. First Quartile (Q…
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20. a school requires students wear uniforms. they can choose from the …
$16$
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the boxplot below shows salaries for construction workers and teachers.…
third quartile, 75
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religions of india (find this info on google classroom. we took fill-in…
### Religions of India Table | Category | Hinduism | Buddhism | Jainism | Sikhism | |----------|----------|----------|---------|---------| | Holy Book/s | Vedas, Upanishads, Bhaga…
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question 7 based on the boxplot above, identify the 5 number summary (m…
5 number summary: 11, 12, 15, 18, 19 IQR = 6
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the data below shows the number of jobs that a sample of people had in …
### Five-Number Summary: Min: 5.00, Q1: 6.00, Median: 11.00, Q3: 15.00, Max: 15.00 ### Correct Boxplot: The first boxplot (with x-axis ranging from 5 to 15, box spanning 6 to 15, …
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29. a school requires students to wear uniforms. they can choose from t…
$\frac{1}{16}$
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one hundred teachers attended a seminar on mathematical problem solving…
(a) 13 (b) 3.7
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the owner of an opera company closely monitors attendance. audience siz…
5000 women
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calculate the standard deviation and variance of the data shown, to two…
Standard deviation: $10.82$ Variance: $117.13$
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the students at clinton middle school are raising money for after-schoo…
$7000
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calculate the standard deviation and variance of the data shown, to two…
Standard deviation: 6.98 Variance: 48.76 *Note: If using population variance (dividing by $n=5$), variance would be $\frac{195.028}{5}=39.01$, standard deviation $\sqrt{39.01}\app…
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the table below shows the scores of a group of students on a 10-point q…
The mean score on this test is: $6.4375$ The median score on this test is: $6.5$
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how do you write $-0.overline{72}$ as a fraction? $-\frac{8}{11}$ $-\fr…
$-\frac{8}{11}$ (Option A)
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the sports teams at westminster middle school are raising money for new…
$\$2,000$
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the highway mileage (mpg) for a sample of 8 different models of a car c…
Mean = 28.5 Median = 29.0 Mode = 35 Standard Deviation = 5.5
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write the meaning of the underlined word. i want to revisit the mississ…
1. To visit (a place) again 2. Plural of fish: fish; Plural of sandwich: sandwiches 3. him 4. Literally 5. Not important; unimportant
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ava has 55 quarts of potting mix. she uses $\frac{1}{4}$ of the potting…
$41\frac{1}{4}$ (or $\frac{165}{4}$, or 41.25) quarts
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brads toys sells a variety of toys. toy sales were more train sets sold…
July
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in a fundraising letter for the annual fireworks show, the director of …
6000 people
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after buying a used car, linda carefully recorded the amount of money s…
$\$1600$
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before deciding to switch to an unlimited texting plan, dwayne kept tra…
Monday
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the tallest player in wnba history was 7 feet 2 inches tall. which show…
1. C. 86 inches 2. $7\frac{4}{5}$ square inches (or $\frac{39}{5}$ square inches)
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the box plots show renes scores in spanish and in french. spanish frenc…
Spanish: Median = 70, Range = 40, Interquartile Range = 20 French: Median = 70, Range = 35, Interquartile Range = 10 Difference in Medians: 0 Difference in Ranges: 5 Difference in…
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1.2.1 study: evaluating published reports 1. $n = 144, \\bar{x} = 45, s…
1. $n=144, \bar{x}=45, s=12, CL=68\%$ ↔ (44, 46) 2. $n=29, \bar{x}=34, s=12, CL=99.7\%$ ↔ can't calculate CI 3. $n=49, \bar{x}=55, s=21, CL=99.7\%$ ↔ (46, 64) 4. $n=29, \bar{x}=34…
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⑦ larry has an assignment due on nov. 29. if he starts to work on it on…
1. 26 days 2. 7 hours and 49 minutes 3. 3:12 p.m. 4. Yes, she will be on time 5. 1:20 p.m. 6. Movie B 7. 7 days and 2 hours 8. 12:19 p.m. 9. 12:26 p.m.
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the sales representative at a dry cleaning supply company tracks how mu…
Buckley Dry Cleaning
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the box plots show the average speeds, in miles per hour, for the race …
D. The median speed in race A is about 153 miles per hour, and the median speed in race B is about 145 miles per hour.
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question the data below represents an international corporations intern…
$\hat{y} = 6106.091 - 514.136x$ The linear model is not a good fit, as the residual plot shows a non-random pattern.
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calculating confidence intervals attempt 2 of 2 select each item in the…
- $n=81, \bar{x}=25, \sigma=4.5, \text{CL}=95\%$ → (23, 27) - $n=64, \bar{x}=40, \sigma=8, \text{CL}=99.7\%$ → (37, 43) - $n=49, \bar{x}=30, \sigma=21, \text{CL}=68\%$ → (27, 33) …
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28. the spinner below is spun twice. what is the probability of the the…
$\frac{1}{8}$
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1) anita and gabe wanted to start saving more money, so they decided to…
2018
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description knewton assessment question 3 · 1 point when traveling to g…
0.63 pounds per dollar
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a proportional relationship is shown in the table below: $x$ 0 0.3 0.6 …
$\frac{10}{3}$
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solve the problems. show your work. jimmy and his grandparents like to …
1. They reached the park at 10:37 a.m. 2. They left the park at 11:17 a.m. 3. They reached the convenience store at 11:49 a.m. 4. They left the store at 12:24 p.m. 5. They took 18…
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mr. swift recorded the amount he spent on gas each month to see if it w…
$\$350$
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question a new car is purchased for 24500 dollars. the value of the car…
2529.55 dollars
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every year hampton has a citywide relay and reports the winning times. …
2023
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in the year 2001, a person bought a new car for $15500. for each consec…
$\$12600$
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resort a - snowfall in inches resort b - snowfall in inches which state…
The median snowfall for Resort B is greater than the median for Resort A. Resort B has more snowfall overall than Resort A does.
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put these numbers in order from greatest to least. $\frac{1}{3}$, $\fra…
$\frac{5}{7}$, $0.67$, $0.57$, $\frac{1}{3}$, $\frac{1}{6}$
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put these numbers in order from greatest to least. $\frac{1}{3}$, $\fra…
$0.87$, $\frac{1}{2}$, $\frac{1}{3}$, $\frac{1}{8}$, $0.07$
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using a diagram to solve a percent problem use the diagram to help you …
$\$22260$
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multiply/divide/add/subtract integers$(-3)(-21) = $$-35 + (-5) = $$-17 …
$(-3)(-21)=63$ $-35 + (-5)=-40$ $-17 + 7=-10$ $-24 - 6=-30$ --- ### Graphical Representations of Data (Candies in Jars)
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students at a local community college can study spanish or french. they…
A. There is no association because students who study Spanish are no more or less likely than other students to choose band. --- ### Question 6 (Ticket Prices)
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mrs. peters. yes. mr. henderson.(the women listen to the mens steps on …
various sound effects can be used to create or enhance the mood.
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1) use the diagram to help you answer the question. after running two-t…
1) 15 miles 2) 24 pounds 3) 24 inches 4) 12 feet ### Diagram for Question 3: ``` |---|---|---|---|---|---|---|---| <-----7/8 painted white-----> <3 inches unpainted> Total length …
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construct and interpret two-way frequency tables 1. attend to precision…
--- ### Completed Two-Way Table (Problem 1): | | Visited Great Wall | Did not visit Great Wall | TOTAL | |--------------------------|--------------------|-------------------------…
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analyzing box plots resort a - snowfall in inches resort b - snowfall i…
The data from Resort A are a symmetric data set. The data from Resort B are not a symmetric data set. The data sets have the exact same median.
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is this function linear, quadratic, or exponential? x | y 4 | 14 5 | $\…
quadratic
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4. a morning radio talk show is running a \winter coat campaign\ to col…
a) $y = 97.76x + 737.33$ b) Day 14
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is this function linear, quadratic, or exponential? | x | y | | -5 | $\…
exponential
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4. sarah bought a binder for $7.25 and six folders. her total cost $9.0…
Each folder cost $\$0.30$
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is this function linear, quadratic, or exponential? x | y -4 | 0.04 -3 …
exponential
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is this function linear, quadratic, or exponential? linear quadratic ex…
quadratic
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determining consistency the snowfall data for resort a have an interqua…
Resort A's snowfall data is more consistent. This means the middle 50% of Resort A's snowfall values are less spread out (closer together) than those of Resort B.
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what is the correct order of the numbers, from least to greatest? $\fra…
D. $-0.3, \frac{1}{6}, \frac{3}{4}, 0.8, 1$
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a carnival had 2,280 visitors this month, and 3,800 visitors last month…
The percent decrease in visitors is 40%. For the double number line: - The box below 2280 is filled with 60% - The box below 3800 is filled with 100%
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is this function linear, quadratic, or exponential? x | y 4 | 24.3 5 | …
linear
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4) is this function linear, quadratic, or exponential? linear quadratic…
quadratic
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a bakery sold 3,900 pastries last month, and 6,825 pastries this month.…
Equation: $\boldsymbol{2925 \cdot 100 = 3900 \cdot p}$ Percent increase: $\boldsymbol{75\%}$
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aa.4 identify linear, quadratic, and exponential functions from tables …
linear
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is this function linear, quadratic, or exponential?
The function is exponential.
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is this function linear, quadratic, or exponential? | x | y | | ---- | …
linear
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1) is this function linear, quadratic, or exponential? linear quadratic…
linear
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a factory produces 91.36 feet of copper wire every minute. how many fee…
2375.36 feet
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1) is this function linear, quadratic, or exponential? | x | y | |----|…
Exponential
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1) barbara bought plastic tubes that are each 0.69 meters long. if barb…
54.51 meters
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2 big bottles, little bottles here are 6 water bottles arranged from la…
# Explanation: ## Step1: Calculate Bottle B's volume First, convert 1 L to mL: $1\ \text{L} = 1000\ \text{mL}$. Bottle B holds 5× this amount: $V_B = 5 \times 1000 = 5000\ \text{m…
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based on part two of trifles, the symbolism of the dead bird implies th…
○ had an oppressive demeanor that killed the bird and his wife's spirit.
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is this function linear, quadratic, or exponential? x | y -1 | 1.2 0 | …
exponential
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each tank at the aquarium holds 95.4 gallons of water. how much water c…
6487.2 gallons
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1) if there are 98.1 feet of ribbon on each roll and kelsey buys 11 rol…
1079.1 feet
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each metal ball weighs 0.5 grams. how much do 7 metal balls weigh in al…
3.5 grams
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which describes the graph in words? all numbers greater than -10 and le…
All numbers greater than -10 and less than or equal to 8
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write $\frac{3}{6}$ in lowest terms.
$\frac{1}{2}$