統計と確率
データ分析、確率分布、仮説検定、統計手法。
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use the following census data from the cities of washington and frankli…
## Part a: - Washington regression line: $Y = 1.3950x - 2730.8600$ - Washington correlation coefficient: $0.9888$ - Franklin regression line: $Y = 1.534x - 2983.100$ - Franklin co…
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anand keeps track of the number of people inside a music hall to attend…
1.25 hours (or 1 hour 15 minutes) after 6 p.m. (at 7:15 p.m.), the line of best fit predicts about 120.3 people are inside the music hall.
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the graph shows the number of minutes, to the nearest five minutes, tha…
The mean will decrease, and the median will stay the same.
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the table shows the heights, in inches, of players on a girls basketbal…
69
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annette is surveying people in the city about their interest in a new s…
480
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tristan records the number of customers who visit the store each hour o…
20 (corresponding to the option "20")
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16. convert \\(\\frac{1}{8}\\) to a decimal and a percent.
Decimal: $0.125$, Percent: $12.5\%$
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solve. $30,000 \\div (1.2 \\times 10^7) = \\square$ $2.5 \\times 10^{-5…
$2.5\times10^{-3}$ (corresponding to the option "2.5 × 10⁻³")
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the total amount of consumer credit has been increasing steadily in rec…
The equation is $Y = 65.78x + 2182.97$
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when you find 420% of 85, what are you looking for?
We are looking for the value that is 420% of 85, which is calculated as \( 4.2\times85 = 357 \), so the answer is 357 (the value representing 420% of 85).
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12. homer won 3 of the first 5 horseshoe games he played. at that rate,…
The number of games (or the "time" in terms of number of games) it will take him to win 10 games is \( \frac{50}{3}\) (or approximately 16.67) games. If we consider whole games, i…
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5. b) given the following data, create a box plot. show all calculation…
Box plot key values: - Minimum: $20$ - First Quartile (Q1): $40$ - Median (Q2): $60$ - Third Quartile (Q3): $88$ - Maximum: $100$ - Interquartile Range (IQR): $48$ The box plot ha…
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2. the store decreased the price of the item from $150 to $120. find th…
The percent decrease is \( 20\% \)
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4. thirty percent of 140 is what number?
42
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9\\frac{30}{100} + 8\\frac{66}{100} =
$17.96$ (or $17\frac{24}{25}$)
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1. the number of students attending the club went from 20 to 26. find t…
The percent increase in attendance is $30\%$.
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umami is a japanese loanword meaning? pleasant savory taste. pleasant s…
A. Pleasant savory taste.
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5. find the unit rate from this graph. miles 56 42 28 14 2 4 6 8 hours
7 miles per hour
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what proportion can be used to find 65% of 90? a. $\frac{65}{90}=\frac{…
C. \(\frac{65}{100}=\frac{x}{90}\)
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18. the entry fee to the fair is $4.00. each ride requires a ticket tha…
D. 16
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six graphs are shown below. click on the tabs to see them. graph 1 grap…
Graph 2 should also be checked (the box next to Graph 2 should be selected) because it passes the vertical line test, meaning it represents a function.
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the suffix -y means \like\ or \characterized by.\ list 3 words that end…
1. Happy - characterized by happiness (or like having happiness) 2. Sunny - like the sun (or characterized by sunshine) 3. Cloudy - like a cloud (or characterized by clouds)
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describe the association in the scatter plot below. the scatter plot sh…
The scatter plot shows a negative association because as the plotted values of \(x\) increase, the values of \(y\) generally decrease. The association can also be described as lin…
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multiple-choice question remorse means deep regret. because of this, he…
C. Convert to Buddhism
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1 the score for a video game is calculated using f(x) = 4.5x² + 7x + 2,…
D. 11,602
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question henry is buying bagels for a family gathering. each bagel cost…
- The independent variable \( x \) represents the number of bagels, and the dependent variable is the total cost, because the total cost depends on the number of bagels. - A funct…
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the dot - plot shows the number of text messages mr. garcia sent each d…
The graph is nearly symmetrical.
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there are 8 sophomores on the academic team. at the last competition, t…
79%
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the graph shows the number of pages in each chapter of a book that josh…
The outlier of 2 decreases the mean page count.
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journal explain how to compare proportional relationships represented i…
Fluffy Stuffy Stuffed Animals should sell their products at The Toy Box. This is because the constant of proportionality (ratio of stuffed animals sold to total toys sold) for The…
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4. a flock of birds flies 200 miles south for the winter. in the spring…
400 miles
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each graph below shows a relationship between x and y. for each graph, …
Proportional, \( y \) is \( 1 \) times \( x \) ### Graph 2
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5. higher order thinking serena has a toy train that is 32 inches long.…
2
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crinoline was a popular linen material woven with horsehair. it was fir…
B. The author shows the sequence in the development of crinoline.
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deshaun buys cheese from the local farmers market. the graph below show…
35 ### Part (b)
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your answer is incorrect. after crossing a bridge, ahmad drives at a co…
To solve this problem, we analyze the graph of distance vs. time for Ahmad's drive. Since he drives at a constant speed, the graph is a straight line, and we can use the relations…
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9. mark loads a crate that weighs 22.5 pounds and 12 boxes that each we…
B. 157.5 pounds ### Problem 10
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keitaro walks at a pace of 3 miles per hour and runs at a pace of 6 mil…
A. 2 hours walking; 12 hours running
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2. represent and connect football party favors come in packages like th…
$\$28$
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a system of inequalities can be used to determine the depth of a toy, i…
The toy sinks at a rate of no more than a \( \frac{1}{2} \) meter per second.
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6. from 12 ft to 23 ft % increase decrease
The percentage change is approximately 91.67% and it is an Increase. So fill in 91.67 (or similar decimal approximation) and select Increase.
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a town has a population of 10000 and grows at 5% every year. what will …
12763
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determine whether the following is a true statement sweden⊆{denmark, sw…
The statement is not a true statement because the symbol $\subseteq$ means "is a subset of" and "Sweden" is a single element (not a set), so it cannot be a subset of the given set…
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what is the meaning of the word seize as used below? use the synonym to…
catch
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multiple-choice question why does aunt alexandra send atticus to discus…
C. She wants Atticus to tell Jem and Scout to behave like a little gentleman and a little lady to do the Finch name proud.
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Question was provided via image upload.
$5\frac{5}{8}$
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what is the meaning of the word ravine as used below? use the synonym t…
deep valley
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determine whether the following is a true statement sweden⊆{denmark, sw…
The statement is not a true statement because the symbol $\subseteq$ means "is a subset of" and "Sweden" is a single element (not a set), so it cannot be a subset of the given set…
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part e now, find the value of \\(\\frac{\\frac{3}{16} \\cdot \\frac{2}{…
8, 105
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there are six circles, each divided into 8 equal parts. the left side h…
\(\frac{45}{8}\)
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find the unit rate.\ \\(\\frac{48\\text{ cm}}{4\\text{ min}}\\)\ \\(\\f…
The missing values are 4 and 12, so the unit rate is $\frac{12\ \text{cm}}{1\ \text{min}}$ or 12 cm per minute.
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find the unit rate. \\(\\frac{600\\text{ ml}}{12\\text{ l}}\\) \\(\\fra…
The unit rate is $\frac{50\ \text{mi}}{1\ \text{L}}$
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/13 5-5: mathxl for school: practice & problem solving part 1 of 2 find…
$\frac{50 \text{ mi}}{1 \text{ L}}$ (the value for the box is 50)
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find the value of x. miles 0 x 96 hours 0 5 10 15 x=□
32
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2) 9% of 368 59% of 240 4) 7% of 903 48% of 195 6) 10% of 86 86% of 10 …
s: 2) \( 9\% \) of \( 368 < 59\% \) of \( 240 \) 4) \( 7\% \) of \( 903 < 48\% \) of \( 195 \) 6) \( 10\% \) of \( 86 = 86\% \) of \( 10 \) 8) \( 18\% \) of \( 314 > 31\% \) of \(…
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find the value of x. | treats | 24 | 72 | | ------ | -- | -- | | dogs |…
9
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write the statement as a rate. it took jenny 37 minutes to bike 5 miles…
D. $\frac{37 \text{ minutes}}{5 \text{ miles}}$
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the image above is a political cartoon depicting the xyz affair. study …
1. The three men's caption: "Come over, sir! We will not give you a single penny!" 2. The center character represents the French agents (X, Y, Z) who demanded bribes from U.S. dip…
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37. jan opens a savings account with $200. each month, she deposits $22…
\( y = 25x + 200 \) ### Part c)
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write the statement as a rate. it took meredith 49 minutes to run 7 lap…
D. $\frac{7 \text{ laps}}{49 \text{ minutes}}$, F. $\frac{49 \text{ minutes}}{7 \text{ laps}}$
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a construction team gives an estimate of three months to repave a large…
45 people
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when sizes of pizzas are quoted in inches, the number quoted is the dia…
4
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part b you have a dozen eggs at home, and you know that with them you c…
50
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you are asked to bake muffins for a breakfast meeting. just as you are …
6
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the function p gives the number of people, in millions, who own a smart…
In 2017 (17 years after 2000), 2320 million people owned a smartphone. ### Problem 1b
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a newspaper researched how many grocery stores there are in each town. …
4
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what is the range? 3 3 0 4 1
4
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an airline tracks how many bags its passengers bring with them. the 8 m…
3
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for a homework assignment, emilia measured the volume of 6 drinking gla…
8 ounces
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bob is rolling a die and recording the number of spots showing. he roll…
3
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cindy prepared and shipped a variety of gift baskets that had been orde…
8
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1) find percent there are 80 animals at the animal shelter. if 32 are h…
40%
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a florist filled an order for 9 bouquets, each with: 8 flowers, 9 flowe…
8
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customers at a sandwich shop are given a pull - tab card with every pur…
\(7\)
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jennifer took a magazine quiz with 6 friends. they each scored: 8 point…
5
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1) find percent there are 80 animals at the animal shelter. if 32 are h…
40%
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what is the mean? 5 3 3 4 0 submit
3
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use the text to put the events in order. making a memory has three main…
1. (first) You encode information. 2. You store information. 3. (last) You retrieve information.
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select the correct answer. read this excerpt from thomas paines essay \…
D. The differences between the kings and the subjects were not religious or natural.
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solve the problems below and sir \\(\frac{1}{2} cdot \frac{2}{3} = \\) …
1. $\frac{1}{3}$ 2. $\frac{8}{5}$
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complete the ratio table for jans store. jans store cds dvds 6 10 12 20…
When the number of DVDs is 40 in both tables, Bailey has 23 CDs and Jan has 24 CDs.
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a baker poured 8 kilograms of oats equally into 3 bags. what is the wei…
1. The weight of each bag of oats is $\frac{8}{3}$ kilograms (or $2\frac{2}{3}$ kilograms). 2. There are 24 thirds in 8 kilograms.
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to buy goods on credit means to pay cash for goods. promise to pay for …
promise to pay for goods later.
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a baker poured 8 kilograms of oats equally into 3 bags. what is the wei…
Each bag gets $2\frac{2}{3}$ kilograms
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22. a recursive formula for the sequence 64, 48, 36, ... is a. $a_n = 6…
D. $a_1 = 64$, $a_n = 0.75a_{n - 1}$
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2. convert 0.8 to a fraction in simplest form. a. \\(\\frac{5}{4}\\) b.…
d. $\frac{4}{5}$ ### Question 3
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diego is baking cookies for a fundraiser. he opens a 5-pound bag of flo…
C. \( f = 3.5 \)
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equals \\(\\frac{90 - 100}{30 - 0} = \\frac{-10}{30} = -\\frac{1}{3}\\)…
The water quality score decreases by 1 for every 3 gallons of water processed.
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problem 6 function c gives the cost, in dollars, of buying n apples. wh…
D. Ten apples cost $9
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the spinner below shows 10 equally sized slices. jessica spun the dial …
0.550 0.500 As the number of spins increases, we expect the experimental and theoretical probabilities to become closer, though they might not be equal.
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13. amusement park an amusement park has 12 major attractions: four rol…
$\frac{1}{495}$
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3 which of the following best paraphrases the meaning of the poem? my d…
The speaker tells about his ugly dog and its problems. The dog smells, is noisy, and eats too much. The speaker still feels this dog is the one for him.
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there are two bags containing only orange and blue marbles. bag a has 1…
Event 1, Event 4, Event 2, Event 3
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a box is filled with 9 red crayons, 2 blue crayons, and 5 yellow crayon…
$\frac{11}{16}$
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trey is going to watch a movie in his collection. he has 3 action movie…
$\frac{2}{3}$
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in an aquarium, there are 10 large fish and 5 small fish. half of the l…
$\frac{1}{3}$
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9) find the number of games played in a round robin tournament for the …
- 6 teams: 15 games - 7 teams: 21 games - 14 teams: 91 games - General formula for $n$ teams: $\frac{n(n-1)}{2}$ games
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a number cube with faces labeled from 1 to 6 will be rolled once. the n…
Sample space: 1,2,3,4,5,6 Event of rolling a number from 2 to 4: 2,3,4
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equals \\(\\frac{90 - 100}{30 - 0} = \\frac{-10}{30} = -\\frac{1}{3}\\)…
The water quality score decreases by 1 for every 3 gallons of water processed.
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a bag has four balls labeled a, b, c, and d. one ball will be randomly …
Sample space: A, B, C, D; Event of choosing the letter A: A