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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you are making sets of pens and pencils to sell. you want each set to c…
A. 4 sets
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18% of 660
118.8
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what is the equation of the trend line in the scatter plot? use the two…
# Explanation: ## Step1: Identify yellow points From the graph, the yellow points are at \((x_1, y_1) = (2, 3)\) and \((x_2, y_2) = (6, 7)\)? Wait, no, wait. Wait, the axes: x - a…
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grace rakes leaves every day for one week. she fills the same number of…
3
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6. thunder from a bolt of lightning travels \\(\\frac{1}{10}\\) mile in…
\(\frac{1}{5}\)
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grace rakes leaves every day for one week. she fills the same number of…
\( 5b + 11 = 26 \)
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what is the equation of the trend line in the scatter plot? use the two…
\(y = \frac{9}{4}x - 9\)
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katherine has 32 pop songs and 72 rock songs on her mp3 player that she…
The greatest number of playlists Katherine can make is \(8\). Each of these playlists will have \(4\) pop songs and \(9\) rock songs. (For the other parts, if we consider more pla…
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grace rakes leaves every day for one week. she fills the same number of…
Number of bags filled each weekday
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greatest common factor - applications - item 20055 you are making bouqu…
12 bouquets (the option with "12 bouquets")
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what is the equation of the trend line in the scatter plot? use the two…
\(y = -\frac{3}{2}x + 15\)
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you conduct an experiment to find the probability of a flipped coin lan…
C. The sample size was too small.
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(a) use the names of the sets to label the regions of the venn diagram.…
(a) Labeling: Innermost circle: Natural numbers; Middle circle: Whole numbers; Outer circle: Integers; Right region: Rational numbers. (b) "Some rational numbers are whole numbers…
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the movement of the progress bar may be uneven because questions can be…
$\frac{1}{8}$
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what is the equation of the trend line in the scatter plot? use the two…
\(y =-\frac{3}{2}x + 15\)
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there is a roughly linear relationship between the length of someones f…
The expected height for someone with a femur length of 54 centimeters.
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unit test: concepts in statistics concepts in statistics : concepts in …
The midrange of the data set shown is 55.
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what is the equation of the trend line in the scatter plot? use the two…
\(y = \frac{3}{2}x-3\)
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where is the bold thamo being used in the sentence? the pirates were di…
Interrupting One Complete Thought
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unit: concepts in statistics progress: the movement of the progress bar…
The range is 50 and the midrange is 40.
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there is a roughly linear relationship between the number of times a sp…
The option: "One number of times the cricket could be expected to chirp in one minute if it's 0°F" (the third option in the list of options provided, likely the one with text abou…
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audrey is taking a multiple choice test. her grade is given by the equa…
Her score with 0 problems wrong.
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question 5 of 10 a formula in cell d1 of this spreadsheet gives a resul…
D. =C2+C3
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3. a small airplane flew 104 miles in 50 minutes. at this rate, how man…
124.8 miles
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question 3 of 10 why might you use this kind of graph? a. to compare da…
C. To show the relationship between two variables using dots
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in a story, a comedian faces the problem that people no longer laugh at…
The paragraph starting with "His first three jokes didn't get any laughs. So, he pulled out an old tried and true joke, the one about the moose. This joke always got them laughing…
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question 1 of 10 after this graph of the food preferences of party gues…
A. In the top (blue) section of the third bar
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1. what does it mean if a sound is described as \muffled\? the sound is…
The option: "The sound is not clear or loud because it's being softened or blocked" (the third option in the list)
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for exercises 14-15, write an equation that matches each scenario. 14. …
s: 14. \( \boldsymbol{y = 75 - 30t} \) (where \( t \) is time in hours, \( y \) is distance from home in miles) 15. \( \boldsymbol{y = 12 + 3t} \) (where \( t \) is time in minute…
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5. in lixues garden, the green pepper plants grew 5 inches in \\(\\frac…
$\frac{20}{27}$ foot
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estimating solutions to multistep word problems - item 35615 carl and h…
There were about $\boldsymbol{200}$ (or 205/206, but 200 is a typical estimate) apples per tree. They will pick about $\boldsymbol{600}$ (or 618/620, but 600 is a typical estimate…
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1. what does it mean if a sound is described as \muffled\? the sound is…
C. The sound is not clear or loud because it's being softened or blocked
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arthur and hannah have to do homework every day after school. arthur ha…
Arthur will complete about 90 questions in 5 days. Hannah will complete about 45 questions in 5 days. Arthur and Hannah will complete a total of about 135 questions in 5 days.
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question 9 of 10 which type of data is used to represent a truck’s tire…
A. Continuous data
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the following question has two parts. answer part a first, and then par…
A. thrifty ### Part B
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estimating solutions to multistep word problems - item 52176 gene keeps…
Gene spends about 80 minutes running and lifting in 1 day. Gene will spend about 400 minutes running and lifting in 5 days.
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a count went from 605 to 203. what was the approximate percent decrease…
The percent decrease was approximately 66% (the option: The percent decrease was approximately 66%).
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to estimate 103% of 63, rich rounded 103% down to 100%, 63 down to 60, …
The correct option is the fourth one: Rich's estimate is unreasonable because it should be greater than 63.
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laura checked her outdoor thermometer and noticed that the temperature …
The percent increase is approximately 45%. (The option: The percent increase is approximately 45%.)
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question 1 of 10 what is quantitative data? a. data that uses a series …
C. Data that uses numbers to represent things that can be measured or counted
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the frequent warfare of the warring states period was both constructive…
- New inventions, such as military technologies and strategies: Constructive - Death of many people in wars: Destructive - Widespread damage to cities and farms: Destructive - Com…
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the new number, 550, is 200 more than the original number. what is the …
The percent change is approximately 55% (the option "The percent change is approximately 55%").
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graphing linear equations topic: graphing linear equations progress: qu…
B. (4, 60)
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the graph below represents the number of miles, y, that janelys can dri…
The rate of change is \(35.2\) miles per gallon.
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estimating solutions to multistep word problems - item 35619 a baker ne…
- First blank: down (or as per options) - Estimated total: \( \boldsymbol{500} \) - The baker: has enough (or "has") (Note: The exact wording of the first blank depends on the pro…
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paul needs to find 310% of 72. which expression should he use? (0.310)(…
(3.10)(72) (assuming the third option is (3.10)(72) as per the visual order of options)
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juan walks 3.5 miles in 56 minutes. how long will it take him to walk 1…
D. 16 minutes
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the graph below represents magans earnings in dollars and cents, y, for…
The rate of change is \(\$16.5\) per hour.
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lesson practice a1.4.06 name: date: period: problems 5–7: this table sh…
The average rate of change is \(-1125\) (people per year). ### Problem 6
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for the next warm-up, use rounding to estimate each sum. which whole nu…
6
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4. a heart beats 264 beats in 3 minutes. what is the unit rate? a 72 be…
C. 88 beats in 1 minute
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mrs. garcia’s students were asked to find 220% of 75. each of the stude…
Colton
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nikki read 2 books every week this past year. there are 52 weeks in a y…
\( 2 \text{ books per week} \times 50 \text{ weeks} = 100 \text{ books} \) (the first option with this equation)
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today, you will play \you be the teacher\! you will need to spot reason…
8 (corresponding to the option "8")
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10 select the correct answer. malik is baking pumpkin bread and banana …
C. 2 loaves of pumpkin bread and 6 loaves of banana bread
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complete the statement. for a regression line in statistics, the symbol…
For the slope, the symbol is often \( b \) (or \( m \)), and for the \( y' \)-intercept, the symbol is \( a \) (or \( b_0 \)). But based on standard simple linear regression notat…
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greatest common factor - item 9425 drag each pair of numbers to show if…
- GCF is less than 4: 6 and 20, 2 and 3, 3 and 4 - GCF is equal to 4: 12 and 16 - GCF is greater than 4: 6 and 24, 12 and 24
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10 valeria and zion also raced their spaceships. v(t) and z(t) represen…
The average rate of change is \(-1125\) (people per year). ### Problem 6
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today, you will play \you be the teacher\! you will need to spot reason…
For \( 6.8 \) rounded to the nearest whole number: \( 7 \) For \( 1.09 \) rounded to the nearest whole number: \( 1 \)
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zara is shopping at a furniture store with a budget of $1,500 to buy a …
The estimated total cost is $\$1700$. Zara does not have enough money to buy the sofa and coffee table.
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in ronnas class, the ratio of boys to girls is 2:3. in suzies class, th…
C. 9
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greatest common factor - item 34685 question 2 of 3 juanita wants to re…
The greatest common factor of 48 and 18 is \(\boldsymbol{6}\). Juanita can use the greatest common factor to rewrite \(48 + 18\) as \(\boldsymbol{6}(8 + \boldsymbol{3})\).
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an architect makes a model of a new house with a patio made with pavers…
$\frac{32}{3}$
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how many students took the survey? venn diagram with three circles: ice…
53
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a survey asked a group of students to list their eye color. the results…
C. 50
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why is the percent increase from 45 to 75 not equal to the percent decr…
- The ratio of the percent increase is not the same as the percent decrease. - The ratio for the percent increase has a smaller denominator than the percent decrease. - The origin…
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if the average grade of an english class rose from 70 to 85, what is th…
The percent increase is approximately 21%. (Corresponding to the option: The percent increase is approximately 21%.)
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hana’s math grade increased from 65 to 86. fiona’s math grade increased…
18 percent (corresponding to the option "18 percent")
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if the population of a country increases at a rate of 1.5% annually and…
D. 74 years
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a survey asked a group of students to list their eye color. the results…
C. 50
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the attendance at a seminar in year 1 was 500. in year 2, the attendanc…
The percent change was 20%. (Corresponding to the option: The percent change was 20%.)
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carey is trying to decide between two guitars. the first had an origina…
The second guitar has a greater percent change of approximately 40%. (Corresponding option: The second guitar has a greater percent change of approximately 40%.)
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rama pradeep - math 7 myp(23) - nwea numerical representations and prob…
9
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part 1 of 2 the points (4,5) and (12,15) form a proportional relationsh…
\(\frac{5}{4}\)
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relating factors and multiples i - item 33487 question 10 of 10 coach l…
21
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marie and jorge are both trying to lose weight. after 3 months they com…
- Marie’s weight change was approximately 14% - Jorge’s weight change was approximately 5% - Marie had the greater percent change
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2. whiskers the cat weighs $2\\frac{2}{3}$ kg. piglio weighs 4 kg. for …
Multiplication equation: \( 4\times x=\frac{8}{3} \); Division equation: \( \frac{8}{3}\div4 = x \); Answer is less than 1; Whiskers is \( \frac{2}{3} \) times as heavy as Piglio.…
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relating factors and multiples i - item 33487 question 10 of 10 coach l…
more than two
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solve the proportion: \\(\\frac{3}{4} = \\frac{x}{8}\\). what is the va…
6
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what is the approximate percent change in a temperature that went down …
The percent change is approximately 17% (the option: The percent change is approximately 17%).
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15. a batter’s batting average can be calculated by taking their total …
A) True
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relating factors and multiples i - item 33487 coach lopez wants to divi…
composite; more than two; 12 (or other multiples of 3 greater than 3, e.g., 6, 9, 15)
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what is the percent decrease when the balance in a bank account goes fr…
The option: "The percent decrease is 80%." (assuming the options are labeled, but from the image, the second option? Wait, the user's image: first option 20%, second 25%, third 80…
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read the sentence. the dusk was filled by the coyotes eerie howl. which…
A. The coyote’s eerie howl filled the dusk
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choose the expression that has a value of 1. 0.65 + 0.45 0.45 + 0.35 0.…
\(0.45 + 0.55\)
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lesson 7 practice problems 1. a recipe calls for \\(\\frac{1}{2}\\) lb …
a. 2 batches b. $\frac{3}{2}$ (or 1.5) batches c. $\frac{1}{2}$ (or 0.5) batches
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the points (7,8) and (49,56) form a proportional relationship. find the…
The slope is \(\frac{8}{7}\). To determine the graph, we check the slope of each option. The correct graph should have a slope of \(\frac{8}{7}\). (If we assume the graphs are lab…
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tanya’s swim club increased their $29 membership fee by $6 a year. what…
The approximate percent increase is 26%. (The option with "The approximate percent increase is 26%.")
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the points (7,8) and (49,56) form a proportional relationship. find the…
\(\frac{8}{7}\)
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what number can i combine with 0.30 to make 1 whole? first, complete th…
0.70
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topic test: subtracting real numbers subtracting real numbers topic: su…
0 dollars
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you use a garden hose to fill a wading pool. if the water level rises 1…
The rate of change at which the water level rises is \( \frac{14}{3} \) centimeters per minute. So, solving the equation \( \frac{14}{3}=\frac{y}{6} \) for y gives a y - value equ…
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is the percent increase from 50 to 70 equal to the percent decrease fro…
No, the percent increase from 50 to 70 (40%) is not equal to the percent decrease from 70 to 50 (≈28.57%) because the base values (50 and 70) for calculating the percentage change…
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what number can i combine with 0.30 to make 1 whole? first, complete th…
For the first part (completing the sentence), the answer is cents. For the number to combine with 0.30 to make 1 whole, the number is 0.70 (or 70 cents).
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error analysis a question on a test asks students to find the speed at …
The speed of the car is 55 miles per hour. Anna's error was that she used \( \frac{\text{change in }x\text{-coordinates}}{\text{change in }y\text{-coordinates}} \) (i.e., \( \frac…
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find three expressions that have a value of 1.00. move them to the bin.…
The three expressions with a value of 1.00 are \(0.95 + 0.05\), \(0.88 + 0.12\), \(0.50 + 0.50\)
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10. approximately 3.5 percent of all children born in a certain region …
### Part A: Tree Diagram Explanation To draw the tree diagram, we start with the first level representing the type of birth (multiple or single). The probability of multiple birth…
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study paths tx math bridge - stage 1 topic test: adding real numbers ad…
1
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3. write a division equation, and draw a tape diagram for each question…
The division equation is \( 3\div9 = \frac{1}{3} \), and the fraction is \( \frac{1}{3} \). ### Part (b)
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mike’s bikes has mountain bikes that usually sell for $275 on sale for …
Mike is not correct. The percent change formula uses the original amount (275) as the denominator, not the sale price (220). Correct calculation: $\frac{275 - 220}{275}=\frac{55}{…