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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in order for students to have a club at school they need a minimum of 2…
B. The number of students that the club needs is at least 8.
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researchers surveyed one hundred students on which superpower they woul…
\( \frac{3}{4} \) (or 0.75)
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4. here is a table of some logarithm values. a. what is the approximate…
\( 2.6021 \) ### 4b
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an electronics store gives customers the option of purchasing a protect…
\( 60 \)
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describe and correct the error a student made when interpreting the gra…
A. In a graph of a vertical motion model, the x - axis represents time, not horizontal distance.
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d = 10.92, 16.12, 17.68
The common difference \( d \) (assuming arithmetic sequence with first two terms) is \( \boldsymbol{5.2} \).
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your answer is incorrect. keisha is filling up a tank with water for so…
(a) $4 < x < 8$ (b) On the number line, draw open circles at the points labeled 4 and 8, then shade the region between these two open circles.
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an insurance company offers auto insurance to customers in a certain ar…
The expected net gain \( E(X) \) is \(\$640\).
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at a family reunion, family members are given the choice of swimming at…
### Part 1: Completing the Frequency Table First, let's recall that in a frequency table, the totals for each row and column should add up correctly. #### Step 1: Find the number …
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juniors and seniors were asked about their preferences for a prom theme…
26
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4. here is a table of some logarithm values. a. what is the approximate…
\( 2.6021 \) ### Part b
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4. reasoning kyle bought a movie ticket for $8.45 and a drink for $1.80…
Kyle started with \$10.25, and the equation is \( x = 8.45 + 1.80 \) (where \( x \) is the initial money).
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nadia made 56 muffins. she wants to fill each treat bag with 8 muffins.…
Yes, Nadia bought enough bags. The equation \(56\div b = 8\) gives \(b = 7\) (since \(56\div7=8\)), and she bought 7 bags, so the number of bags she has matches the number needed …
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3. chicagos average monthly rainfall, $r = f(t)$ inches, is given as a …
\( t = 5 \) and \( t = 7 \); Interpretation: May (t=5) and July (t=7) have an average monthly rainfall of 3.5 inches. ### Part (a) ii: Solve \( f(t) = f(2) \)
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modelo 2:40 p.m. son las tres menos veinte de la tarde. 3:40 p.m. son l…
1. 3:40 p.m.: **Son las cuatro menos veinte de la tarde** 2. 9:15 p.m.: **Son las nueve y quince de la noche** 3. 10:45 a.m.: **Son las once menos cuarto de la mañana** 4. (The co…
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the tonal eclipse choir is practicing for a show. to feel prepared, the…
### (a) $2 \leq x \leq 7$ ### (b) To graph this on a number line: 1. Draw a closed circle at $x=2$ (since the value is included in the solution) and a closed circle at $x=7$. 2. S…
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anton walked 8.9 miles of his 13.5 - mile goal for this week. use the e…
Anton should walk the Oak Tree Path (4.6 miles) to meet his goal. The value of \( m \) is \( 4.6 \) miles.
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7. what does the author mean by \unseen, unheard bravery\ in the last p…
C. Women continue living bravely without recognition
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melanie went into a grocery store and bought 6 peaches and 8 mangos, co…
Let $p$ = the price of one peach. Let $m$ = the price of one mango. System of Equations: $6p + 8m = 14.50$ $7p + 4m = 14.25$
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2 highlighter leslie uses tik tok literally every day. she watches at l…
\( 50 \leq v \leq 200 \) (where \( v \) is the number of videos Leslie watches per day)
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7. 6.8 = 2.89 + m m = 3.9, 3.91, 4, 4.11 9. d ÷ 5.20 = 2.40 d = 10.92, …
s: - Problem 7: \( m = \boldsymbol{3.91} \) - Problem 8: \( c = \boldsymbol{8} \) - Problem 9: \( d = \boldsymbol{12.48} \) (or check the given options for accuracy) - Problem 10:…
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melanie went into a grocery store and bought 6 peaches and 8 mangos, co…
Let $p$ = price of one peach (in dollars) Let $m$ = price of one mango (in dollars) System of Equations: $6p + 8m = 14.50$ $7p + 4m = 14.25$
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question 2 christian sets aside $60 per month for daily coffee. mcdonal…
## Part a: $\boldsymbol{x + 3y \leq 60}$ (where $x$ = number of $\$1$ McDonald's coffees, $y$ = number of $\$3$ The Bean Sprout coffees) ## Part b: 1. Plot the points $(0, 20)$ (y…
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5. a bakery makes pies and muffins in chocolate, blueberry, or peach. i…
\(\frac{1}{6}\)
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m - 63.28 = 14.92 \ m = 77.86, 78.15, 79.20
If the equation is \( m - 63.28 = 14.87 \), then \( m = 78.15 \) (matching one of the given values). If we strictly use \( m - 63.28 = 14.92 \), the correct \( m \) is 78.2, but s…
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4. a company’s social media manager tracked the length in seconds and t…
C. $y = 74.4x + 118.6$
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this table shows the time and distance a vehicle traveling at a constan…
2280 ### Question 11 (Camera Price)
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lamar takes \\(\\frac{1}{4}\\) of an hour to complete \\(\\frac{1}{2}\\…
\(\frac{1}{2}\) hour ### Problem 9 (Karen's Driving)
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5. enter the answer. what is the quotient of 2,528 ÷ 16?
158
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estimations part 3 of 3 1 2 3 trying to earn: for each question below, …
1. 0.17 and 0.2 2. 350 and 900 3. 1500 and 7
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4. which number makes the comparison true? 30.53 > □ a. 30.491 b. 30.74…
A. 30.491
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Question was provided via image upload.
10
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3. shakira buys clothes for school. - she buys 2 pairs of jeans for $22…
$45.45 ### Problem 4 (Lee and Carroll's Tip)
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you got it right - just one more to go! roseburg housing office analyze…
Question 1: C Question 2: D Question 3: Range, Average Question 4: The single-family home was actually on the cross street, not on Park Boulevard; It was registered incorrectly as…
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practice it practice writing linear equations from word problems linear…
--- ## 1. Andre's Account a. Table: | x | y | |----|------| | 0 | 157 | | 1 | 277 | | 2 | 397 | | 3 | 517 | | 4 | 637 | b. $y = 120x + 157$ c. $\$1117$ --- ## 2. Valentina's Accou…
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descriptive statistics part 2 of 2 1 2 trying to earn tewkesbury housin…
Question 1: B Question 2: A Question 3: Range, Average Question 4: It was registered incorrectly as an apartment building, but is actually 6 single-family homes constructed by the…
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leah needs to shade \\(\\frac{1}{5}\\) of the 20 small squares in the g…
Remove shading from 2 small squares.
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the bar graph shows the number of members in clubs at lake middle schoo…
8
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order the numbers from least to greatest.\\(\\frac{43}{50}\\)\\(0.91\\)…
$84\%$, $\frac{43}{50}$, $\frac{7}{8}$, $0.91$
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analyzing projectile motion represented by a table the table relates to…
The rock hits the ground between 2 seconds and 2.5 seconds after it is dropped.
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question 3: the table below shows the price at which customers can buy …
D. Music Shoppe ### Question 4:
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correct any errors in capitalization or punctuation. your answer should…
"I've been meaning to ask," said the detective, "whether you happened to write down the license plate of that stolen car?"
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10. communicate and justify jane interpreted the mean of the given data…
10. Jane confused the mean with the median. The mean is the average, not the value that splits the data into two equal halves (that is the median). 11. The mean describes the aver…
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practice & problem solving leveled practice in 8 and 9, use the histogr…
8. interquartile range (IQR) 9. median
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fatima plans to fly from new york to denver for work. she collects data…
Flight times for Airline B are typically shorter and more consistent than Airline A.
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activity 3: find the sum: a. the first 30 integers b. the first 50 inte…
\( 465 \) #### b. The first 50 integers
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two rain barrels are used to water a school garden. the table and equat…
D. Barrel 1 and Barrel 2 drain water at the same rate. $y=9$ $6.3281 \times 10^{-7}$ $2^{-6}$
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predicting end behavior based on the table, which statement best descri…
As \( x ightarrow\infty,f(x) ightarrow\infty \), and as \( x ightarrow-\infty,f(x) ightarrow\infty \) (the fourth option in the original problem's choices, assuming the options ar…
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what are the domain and range of this relation? (6, 8) (-6, 1) (-4, -5)…
domain: $\{-9, -6, -4, 6\}$ range: $\{-6, -5, 1, 8\}$
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completing the sentence choose the word from the word bank that best co…
inaudible ### Question 2
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in the data set below, what is the mean absolute deviation? 1 3 6 3 6 2…
1.6
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instructions use the graph to answer the questions. question 11 multipl…
A. \( R=\{1,2,4,6\} \)
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in the data set below, what is the mean absolute deviation? 1 5 1 3 5 8…
1.7
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instructions use the table to answer the questions. classify a table 14…
(1,7), (0,0), (2,10), (2, - 6), (1,3)
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in the data set below, what is the mean absolute deviation? 2 9 5 4 9 7…
2.3
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instructions use the table to answer the question. classify a table 10 …
False
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the table shows the football teams that made the playoffs in the americ…
Shade Region I (the non-overlapping portion of circle A)
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instructions use the graph to answer the questions. classify graphs 10 …
C. \(D = \{1,2,4,6\}\) (assuming the options are labeled as A, B, C, D with C being \(D=\{1,2,4,6\}\))
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directions: drag the tiles to the correct boxes to complete the pairs. …
- Original \$37.50 → New \$34.50: 8% decrease - Original \$98.00 → New \$108.78: 11% increase - Original \$63.00 → New \$56.07: 11% decrease - Original \$12.25 → New \$13.23: 8% i…
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order the numbers from least to greatest. 0.15% \\(\\frac{3}{20}\\) 0.0…
$0.15\%$, $0.015$, $\frac{3}{20}$
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4 × 10⁻⁵ − 1.1 × 10⁻⁸ = the area of texas is about 2.69 × 10⁵ square mi…
\( \approx 3.9989\times 10^{-5} \) (or approximately \( 4\times 10^{-5} \)) ### Second Problem: Area Comparison
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cycle 1 - homework package review 3: the equation of a line in slope y …
The value of \( a \) is \(-20\).
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some teachers compared how many years they have been teachin years of t…
16
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one - sixth of d plus two - thirds of f
\( \frac{1}{6}D + \frac{2}{3}F \)
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order the numbers from least to greatest. 68% 0.63 \\(\frac{13}{20}\\)
0.63, $\frac{13}{20}$, 68%
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7. rowan writes the following equation. write the number that makes the…
7. $0$ 8. No, I do not agree. The number line is divided into 3 equal parts, so the first mark represents $\frac{1}{3}$, not $\frac{1}{2}$. 9. Fraction behind her: $\frac{5}{8}$; …
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2. write the start and end times shown on the clocks. then use the open…
Start time: 1:20 a.m., End time: 3:08 a.m., Time interval: 1 hour 48 minutes (or 108 minutes)
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the data represents the number of minutes people spent driving one week…
3
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in 9–14, use the data to write a ratio for each comparison in three dif…
### Problem 9: O+ donors to A+ donors # Explanation: ## Step1: Identify the number of O+ and A+ donors. From the table, O+ donors = 90, A+ donors = 45. ## Step2: Write the ratio a…
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the data represents the number of minutes people spent driving one week…
3
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the data represents the number of minutes people spent driving one week…
No, the distribution is not symmetrical.
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16. open - ended what might descartess number be? my number is greater …
A possible number is \(0.65\) (other valid numbers include \(0.60\), \(0.61\), \(0.62\), \(0.63\), \(0.64\), \(0.65\), \(0.601\), etc., as long as digits after tenths place are le…
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the german club made a table showing the ages of its members. club memb…
9
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the members of the cycling club compared how many miles they biked last…
19
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a tax consultant analyzes the distribution of income tax payments and f…
The mean is greater than the median.
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order the numbers from least to greatest. 38% \\(\\frac{8}{25}\\) 0.41
$\frac{8}{25}$, $38\%$, $0.41$
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order the numbers from least to greatest. 38% \\(\\frac{8}{25}\\) 0.41
$\frac{8}{25}$, $38\%$, $0.41$
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a crayon factory monitored the number of broken crayons per box during …
73
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the data represents the ages of people at a garage sale. how many gaps …
1
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the members of the track team compared how many miles they ran last wee…
7
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a tax policy researcher examines the distribution of household incomes …
The median is greater than the mean.
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jeffreys class recorded how many cans of food each student collected fo…
6
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ian looked at his calendar to see how many hours he had worked in the p…
3
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the data represents the ages of people at a garage sale. how many gaps …
# Explanation: ## Step1: Identify intervals with no data A gap in a histogram is a range of values with no data (no bars). Let's check the intervals: - 15 - 25: has a bar (height …
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the data represents the ages of people at a garage sale. where are the …
Gaps are in the age intervals 35–45 years and 55–65 years.
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the bell curve, also called the normal curve, is a graph that is used t…
the distribution and average of test scores
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the data represents the ages of people at a garage sale. how many gaps …
2
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a girl compared the ages of her cousins. ages of cousins what is the mo…
10
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what does standardization mean? the test is always given on the same da…
Same test construction, given to a representative sample, administered the same way, & scored alike.
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between which seconds is the line increasing? between 12 and 13.5 secon…
D. Between 1 and 5 seconds (assuming the options are labeled as A: Between 12 and 13.5 seconds, B: Between 7 and 12 seconds, C: Between 0 and 1 seconds, D: Between 1 and 5 seconds)
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click the icon to view the dot plot. a. the mean of sonyas data is 7.5 …
let's see, the column at 7: let's count the dots. Let's see, the column at 7: the dots are, let's say, 7 dots? Wait, no, maybe: Wait, the other columns: - 8: 3 dots (8, 8, 8) - 9:…
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the school district compared how many math teachers each high school ha…
9
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a waitress kept track of how many hours she worked each day. hours work…
6
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is this function discrete or continuous? how do you know? continuous, b…
A. continuous, because it’s a connected line with no breaks
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analyzing tax data the table presents detailed tax data for 10 individu…
815
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part 2 of 3 sonya randomly surveys 26 seventh graders to gather data ab…
7
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the data represents the ages of people at a book fair. where are the pe…
The peaks are located in the age intervals of 30 - 40 years and 70 - 80 years.
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to get credit for meeting his schools community service requirement, jo…
6
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analyzing tax data the table presents detailed tax data for 10 individu…
no mode
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the school district compared how many swings each elementary school has…
7