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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1 dariush ate \\(\\frac{3}{8}\\) of the coffee cake while eton ate \\(\…
$\frac{7}{8}$ ### Problem 2 #### Part 1: Check if they can stand on the bridge
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question describe the correlation in the scatter plot below. answer att…
The scatter plot shows negative linear with one outlier correlation because as the plotted values of \( x \) increase, the values of \( y \) generally decrease.
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question describe the correlation in the scatter plot below. answer att…
The scatter plot shows negative linear with one outlier correlation because as the plotted values of \( x \) increase, the values of \( y \) generally decrease.
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a. data: 42, 58, 67, 55, 40, 69, 66, 51, 46, 48, 68 1 what is the lower…
## Dataset A Answers: 1. Lower Extreme: 40 2. Upper Extreme: 69 3. Median: 55 4. Lower Quartile: 46 5. Upper Quartile: 67 6. Range: 29 7. Interquartile Range: 21 8. Mean: $\frac{6…
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round to the nearest tenth. 6.78
6.8
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question describe the association in the scatter plot below. answer att…
The scatter plot shows negative linear with one outlier association because as the plotted values of \( x \) increase, the values of \( y \) generally decrease.
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describe the association in the scatter plot below. answer attempt 1 ou…
The scatter plot shows negative linear with one outlier association because as the plotted values of \( x \) increase, the values of \( y \) generally decrease.
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determine the pearson correlation coefficient for n = 29 and α = 0.01. …
0.463 (Wait, no, wait the options: the options are 505, 514, 396, 463 (probably decimal points, like 0.505, 0.514, 0.396, 0.463). So the correct answer is 0.463? Wait, no, maybe I…
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find the geometric mean of 6 and 7. a. \\(\\sqrt{42}\\) b. \\(4\\sqrt{3…
A. $\sqrt{42}$
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what number is equivalent to the expanded form shown below? (2 × 100) +…
250.409
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describe the correlation in the scatter plot below. the scatter plot sh…
The scatter plot shows \(\boldsymbol{\text{nonlinear}}\) correlation because as the plotted values of \( x \) increase, the values of \( y \) generally follow a curved (non - line…
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determine the pearson correlation coefficient for n = 20 and α = 0.02. …
\( 0.524 \) (corresponding to the option \( 0.524 \))
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day 3 box & whisker plots activity 1 sort the numbers below into least …
### First Dataset Sorted: $7, 8, 9, 10, 11, 12, 13$ Minimum: $7$, Q1: $8$, Median: $10$, Q3: $12$, Maximum: $13$ (Box plot: Whiskers at 7 and 13, box from 8 to 12, line at 10 on t…
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describe the correlation in the scatter plot below. answer attempt 1 ou…
The scatter plot shows no correlation because as the plotted values of \( x \) increase, the values of \( y \) generally do not follow a consistent pattern (increase or decrease i…
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question describe the correlation in the scatter plot below. answer att…
The scatter plot shows \(\boldsymbol{\text{no}}\) correlation because as the plotted values of \( x \) increase, the values of \( y \) generally \(\boldsymbol{\text{stay the same}…
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racecourse and discourse have the same root, course, which means \movem…
D. extended discussion on a subject
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question describe the association in the scatter plot below. answer att…
The scatter plot shows \(\boldsymbol{\text{positive}}\) association because as the plotted values of \( x \) increase, the values of \( y \) generally \(\boldsymbol{\text{increase…
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solving number stories a stand sold souvenirs at a basketball game. the…
(with unit): \$3325 ### Question 2
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find the geometric mean of 2 and 3. a. $2sqrt{3}$ b. $sqrt{5}$ c. $sqrt…
C. \(\sqrt{6}\)
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write out the five number summary for each data set. 1) 18, 25, 46, 38,…
1) Minimum: $5$ $Q_1$: $18$ $Q_2$: $31.5$ $Q_3$: $45$ Maximum: $49$ 2) Minimum: $7$ $Q_1$: $22$ $Q_2$: $32.5$ $Q_3$: $45.5$ Maximum: $50$ 3) Minimum: $7$ $Q_1$: $12$ $Q_2$: $24$ $…
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philip is a tech geek and loves his new smartphone, but he is frustrate…
No, \(x\) and \(y\) do not have a proportional relationship.
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solve the following system of inequalities graphically on the set of ax…
$(0, 0)$ *(Note: Any point in the overlapping shaded region is a valid answer, e.g., $(1,1)$, $(2,0)$ are also acceptable.)*
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try this 8 ali shaded 0.4 of a hundreds grid. tarun shaded 0.32 of the …
0.72 For the explanation part: We need to find the total shaded portion, so we add the decimal values representing the shaded parts of Ali (0.4) and Tarun (0.32). First, we can re…
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10. a library has 120 books, and 3/4 of them are fiction. how many fict…
90
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8.) kit is baking cakes. she has 5 cups of sugar and each cookie needs …
A.) $\frac{20}{3}$ (or $6\frac{2}{3}$) B.) The quotient $6\frac{2}{3}$. This means that Kit can make 6 whole cakes.
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luther is passionate about movies and dreams of going to film school. h…
No, \( x \) and \( y \) do not have a proportional relationship because the graph does not pass through the origin \((0,0)\) (it starts at \((0, 5)\)).
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andy wants to get in shape, so he joins a local gym, buff and tough. fo…
No, \( x \) and \( y \) do not have a proportional relationship because the graph of their relationship does not pass through the origin \((0,0)\) (it has a \( y \)-intercept of 1…
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two 5th grade classes are raising money. mrs. kennedy’s class raises $1…
The total money the two classes raised is $\$180$, which corresponds to option C (assuming option C is $\$180$ as per the calculation). The steps are: first, calculate 50% of $\$1…
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Question was provided via image upload.
1. $4.5$ 2. $187.2$ 3. $158.1$ 4. $913.5$ 5. $227.52$
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this summer, antonio fulfilled a lifelong dream and traveled to kenya. …
Yes, \( x \) and \( y \) have a proportional relationship because the graph is a straight line passing through the origin \((0,0)\) and the ratio \(\frac{y}{x}\) is constant (e.g.…
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use what you know about equivalent fractions to add. write an equation …
$0.72$ of the grid
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a bag contains 8 red marbles, 2 blue marbles and 4 green marbles. if tw…
\( 30.8\% \)
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an athlete ran at a constant speed for 12 seconds. the part of the line…
The domain of the function is \( 0\leq x\leq12 \) (or the set of all real numbers from 0 to 12, inclusive, representing the time in seconds the athlete runs).
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use the box - and - whisker plot to answer the questions below. (a) wha…
20 ### Part (b)
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use the box - and - whisker plot to answer the questions below. (a) whi…
The same number of fish had a length under 50 as had a length over 50. ### Part (b)
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regina has a bag of marbles that contains 3 blue marbles, 4 red marbles…
For the first blank (possible outcomes): 12 For the probability of first blue: \( \frac{1}{4} \) For the probability of second yellow: \( \frac{5}{12} \) For \( P(\text{blue then …
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which number line models $-5 + (-8)$? add. $-5 + (-8) = \\square$
The number line that models \(-5 + (-8)\) is the first one (the top number line). And \(-5 + (-8)=\boxed{-13}\)
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the median of 5, 7, 2, 9, 8 is: 5 7 8 6
B. 7
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find the mean, median, and mode of the set of values age (years) | freq…
The mean is approximately 15.77 years. The median is 16 years. A. The mode is 16 years.
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find the mean, variance, and standard deviation for the data set 6, 15,…
The mean is $\bar{x} = 9.00$ The variance is $\sigma^2 = 26.60$ The standard deviation is $\sigma \approx 5.16$
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what is the correct meaning of the word gouge? there was a huge gouge i…
gash
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evaluate the given expression. p(n, 1)
$n$
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summary a summary is a brief, complete statement of a text that retains…
To write a summary of "Junk - Food Tax: A Well - intentioned but Bad Idea", we first need the content of the article. Since the article's content isn't provided here, we can't cre…
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one of them is that happy moment at the soda fountain...with a tinkling…
a more positive connotation
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read the excerpt from notes of a native son. in that year i had had tim…
The tension in his father's body reflects the tension between oppressor and oppressed in early 20th-century America.
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round 6.56 to the nearest whole number.
7
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x is a normally distributed random variable with mean 60 and standard d…
0.002
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x is a normally distributed random variable with mean 42 and standard d…
0.840
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x is a normally distributed random variable with mean 97 and standard d…
0.84
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(a) write 0.027 as a percentage. (b) write 5.34% as a decimal. (a) 0.02…
(a) \( 2.7\% \) (b) \( 0.0534 \)
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x is a normally distributed random variable with mean 58 and standard d…
0.975
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x is a normally distributed random variable with mean 57 and standard d…
0.815
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x is a normally distributed random variable with mean 17 and standard d…
0.024
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x is a normally distributed random variable with mean 49 and standard d…
0.815
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x is a normally distributed random variable with mean 14 and standard d…
0.0235 rounded to 0.024
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which literary term refers to exaggerated statements not meant to be ta…
B. Hyperbole
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x is a normally distributed random variable with mean 71 and standard d…
0.839
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x is a normally distributed random variable with mean 15 and standard d…
0.839
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from the excerpt from the republic by plato. suppose then that we invit…
D. ethos, because the speaker describes the women he thinks deserve to be leaders
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select the correct answer from the drop down menu read the following li…
married
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read the excerpt from the republic by plato. and what shall be their ed…
The correct option is the one with "rhetorical question, asking what defines literature and music" (note: the description's content about "what defines literature and music" might…
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skill sheet: key features + connecting tables to models, and regression…
A. \( f(x) = 4\sqrt{x} \)
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a function p estimates that there were 2,000 animals in a population in…
C. $p(x) = 2,000(1.03)^x$
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5 mark for review scott selected 20 employees at random from all 400 em…
B. 320
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an electronics store placed an ad in the newspaper showing flat - scree…
a. The mean is $\$1028.00$ The median is $\$949.00$ The mode is $\$700$ b. The store is using the **mode** because it is the lowest value, making TVs seem more affordable to attra…
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2.3c solving exponential functions quick write the function shown is so…
The work is incorrect because: 1. The exponential expression $4^{2x-6}$ was incorrectly treated as a linear product $4(2x-6)$—exponential notation means repeated multiplication of…
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a bag contains 4 red marbles, 3 blue marbles and 6 green marbles. if tw…
0.077
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a set of data has a normal distribution with a mean of 46 and a standar…
50
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twenty - five randomly selected students were asked the number of movie…
### Part (a) To construct a histogram, we need to check the frequency of each number of movies: - For 0 movies: frequency is 5 - For 1 movie: frequency is 9 - For 2 movies: freque…
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a set of data has a normal distribution with a mean of 60 and a standar…
95%
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a normal distribution has a mean of 4 and a standard deviation of 1. wh…
49.87
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select the correct answer from the drop - down menu read the excerpt fr…
"in short."
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21. leaving the open sea to sail through a narrow ____ is the type of a…
To solve these vocabulary - based multiple - choice questions, we analyze each question by looking at the context and the meaning of the words in the options. ### Question 21 - **…
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sixty - five randomly selected car salespersons were asked the number o…
A. The relative frequency shows the proportion of data points that have each value, while the cumulative relative frequency shows the proportion of data points that are equal to o…
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（the text in the image is partially unclear, and the following is the r…
The standard deviation of the large wild cats is $\sigma \approx 10.28$ The standard deviation of the birds in flight is $\sigma \approx 74.68$ The standard deviations of the two …
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find the standard deviation for each data set. use the standard deviati…
The standard deviation of the large wild cats is $\sigma = 13.64$ The standard deviation of the birds in flight is $\sigma = 51.54$ The standard deviations of the two data sets sh…
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7. 5% of what number is 3.6? 8. 12.6 is what percent of 105? 9. 13% of …
7. 72 8. 12% 9. 29 10. 98 11. 340 12. 64%
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some teachers use a weighted mean to calculate grades. each score is as…
82.1
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consider the list of numbers below. at what position is 38 in the \\box…
55
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1. what is 90% of 130? 2. what percent of 55 is 22? 3. 58% of what numb…
1. 117 2. 40% 3. 135 4. 60% 5. 54 6. 588
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sixty - five randomly selected car salespersons were asked the number o…
### Part 1: Completing the Table First, let's recall the definitions: - **Frequency**: The number of times a data value occurs. - **Relative Frequency**: Frequency divided by the …
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convert 51.9% to a fraction in simplest form and a decimal. answer atte…
Fraction: $\frac{519}{1000}$ Decimal: 0.519
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convert 0.932 to a fraction in simplest form and a percent. answer atte…
Fraction: $\frac{233}{250}$ Percent: $93.2$ %
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a cookie recipe states for every 3 cups of flour, 1 1/2 teaspoons of va…
$2\frac{1}{2}$ teaspoons (or $\frac{5}{2}$ teaspoons)
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convert 0.275 to a fraction in simplest form and a percent. answer atte…
Fraction: $\frac{11}{40}$ Percent: $27.5\%$
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what is 0.63% as a decimal? 0.0063 0.063 63.0 6300.0
0.0063 (corresponding to the option "0.0063")
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student grades on a chemistry exam were: 79, 78, 76, 82, 86, 50, 79, 81…
For stem 5: 0 For stem 6: NONE For stem 7: 6 8 9 9 For stem 8: 1 2 4 6 For stem 9: 9
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question convert 70.2% to a fraction in simplest form and a decimal. an…
Fraction: $\frac{351}{500}$ Decimal: $0.702$
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what is 0.06% converted to a decimal? 0.0006 0.6 6.0 600.0
\(0.0006\) (corresponding to the option with \(0.0006\))
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worksheet: the quiet power of introverts part a - prediction 1. what do…
s for Part B: 1. e. Challenge 2. a. Introvert 3. c. Stereotype 4. d. Strength 5. b. Extrovert ### Part A (Sample Answers, as it’s predictive): 1. *Introvert* likely means a person…
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name: date: worksheet: the quiet power of introverts part a – predictio…
s (for the prediction part as examples, and vocabulary context explanation): ### Part A – Prediction 1. Un introvertido es una persona reservada que prefiere su mundo interno, la …
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worksheet: the quiet power of introverts part a - prediction 1. what do…
### 1. Respuesta a la pregunta 1: # Breves explicaciones: La palabra "introvertido" (introvert) generalmente se refiere a una persona que tiende a centrarse en su mundo interno, e…
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name: date: worksheet: the quiet power of introverts part a - predictio…
### 1. Respuesta a la pregunta 1: # Breve Explicación: La palabra "introvertido" (introvert) generalmente se refiere a una persona que se siente más cómoda en entornos menos socia…
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43. a company currently has 500 employees. the number of employees is e…
$y=500(1.02)^x$
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not all functions are expressed as equations. here is a graph of a func…
1. $3$ 2. $6$ 3. $1$ 4. $x=0$, $x=2$, $x=9$ 5. $x=4$ 6. $x=7$ 7. $[0, 12]$ (or $0 \leq x \leq 12$) 8. $[0, 6]$ (or $0 \leq y \leq 6$)
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a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. if tw…
\( 0.12 \)
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a bag contains 8 red marbles, 7 blue marbles and 2 green marbles. if tw…
\(\frac{7}{34}\)
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a bag contains 3 red marbles, 2 blue marbles and 7 green marbles. if tw…
\( 0.045 \)
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read - aloud of passages which detail shows how passage 2 uses evidence…
B. Passage 2 uses examples of countries with strong academic performance.
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1. why was writing an effective means of communication for those promot…
1. Writing was effective because it let marginalized groups share their equality demands widely, preserve their messages over time, and access audiences they couldn't reach throug…