Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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3.6 engage: line of best fit due on 11.20.2025 10 total points 2 total …
A line that models the overall trend in the data.
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3.6 engage: line of best fit due on 11.20.2028 10 total points 2 total …
The student scored higher than predicted.
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3.6 engage: line of best fit due on 11.20.2025 10 total points 2 total …
On average, each ad increases cookie sales.
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3.6 engage: line of best fit due on 11.20.2025 10 total points 2 total …
A line that balances points above and
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5. chloe was given the following problem in her statistics class: \a pe…
Chloe is incorrect because she assumed independence (as if picking with replacement) when using the \(10\times10\) grid. In reality, when picking two writing utensils together (wi…
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3.6 engage: line of best fit due on 11.20.2025 10 total points 2 total …
To make predictions about values not
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6. reaction times have μ = 250 ms and σ = 40 ms. find the probability t…
The probability that a reaction time is between \(220\) ms and \(295\) ms is \(0.6431\)
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5. the graph below shows the amount of money a diner can make from sell…
a. Yes, because the graph is a straight - line passing through the origin. b. If no milkshakes are sold (\(x = 0\)), there is no profit (\(y = 0\)). c. \(1.5\) (dollars per milksh…
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question 5 if the line of best fit is y = 200x + 500, how many follower…
3500
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question 5 if the line of best fit is ( y = 200x + 500 ), how many foll…
\(16\)
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a podcast host tracks the number of episodes released and how many foll…
The slope of the line of best fit represents the average number of additional followers gained per episode released.
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real - world data varies, even when trends are visible the line of best…
\(8\)
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a game developer tracks how many hours players practice each week and h…
- **Question 1**: Whether there is a general pattern between practice time and performance - **Question 2**: The data is too scattered to make predictions
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a game developer tracks how many hours players practice each week and h…
Whether there is a general pattern between practice time and performance
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jasmine, a twenty - two year old woman accused of armed robbery, mainta…
B. bench trial
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the protestant reformation religious disputes in england after martin l…
Relative peace and stability were achieved, contrasting with religious strife under Mary I.
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the protestant reformation religious disputes in england after martin l…
Protestants and Catholics
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a researcher modeled the relationship between weekly practice time (x) …
- "A student with no practice is expected to score 60": \(y\) - intercept - "The model predicts a score of 60 at 0 hours": \(y\) - intercept - "A student practicing 10 hours is pr…
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2 kelly rolls two fair six - sided dice and records the sum of the two …
b. \(\frac{1}{6}\) c. \(\frac{5}{18}\) d. \(\frac{1}{2}\) e. Event \(A\): sum of \(2\); Event \(B\): sum of \(12\) (answers may vary) f. Yes, each outcome \((i,j)\) has probabilit…
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a scatterplot shows the relationship between the number of tutoring ses…
A student who attends no tutoring sessions will score 60.
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fill in the blanks so that the resulting statement is true. data presen…
Data presented in a visual form as a set of points are called a scatter plot. The line that best fits the data points is called a regression line.
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customer service use the information below to answer the question one o…
customer service
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customer service use the information below to answer the question. one …
It can discourage customers from considering a return.
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two students draw lines of best fit on the same scatterplot, showing th…
Student B, because it passes through the most points exactly.
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customer service use the information below to answer the question. one …
It helps uphold a favorable company reputation.
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ap stats lesson 5.3 homework 1 a variety pack (box) of instant oatmeal …
\(P(\text{Plain})=\frac{1}{3}\approx 0.33\) ### b. Probability of not selecting plain oatmeal
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customer service use the information below to answer the question. in t…
to address issues promptly and ensure a seamless customer experience
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customer service use the information below to answer the question. in t…
succumbing to panic or frustration
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the elements of a marketing mix are price, product, distribution and co…
B. False
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to \think it forward\, means to: live your life with no plan live in th…
None of the options provided in the image are correct. The phrase "think it forward" means to plan and consider future implications, which is not accurately represented by the giv…
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customer service use the information below to answer the question. one …
customer service
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customer service use the information below to answer the question. in t…
It can enhance the overall customer experience and make individuals feel valued.
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youve been tracking how many miles you run each day and how many calori…
500
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3. casey wants to rank her subjects compared to the rest of the student…
History (\(z\approx1.96\)), English (\(z = 0.94\)), Math (\(z\approx - 0.18\))
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they eat and drink out of vessels of earth or glass, which make an agre…
- B. The Utopians make chamber - pots out of gold. - D. The Utopians use gold to chain enslaved people.
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questions: 1. how would you describe the trend in the data? what does i…
1. The data shows a negative trend. As the minutes of daily practice increase, the reaction time decreases. This tells us that more practice leads to a shorter reaction time. 2. A…
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they eat and drink out of vessels of earth or glass, which make an agre…
The Utopians work hard to make gold and silver seem less valuable.
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question 5 describe the overall trend in the data. then explain two pos…
The overall trend is a positive correlation. Possible reasons for outliers: natural talent and poor - quality practice. Outliers can distort the perception of relationship strengt…
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a scatterplot shows the relationship between number of text messages se…
This scatterplot shows a noticeable area of **cluster** and one point that is a clear **outlier**.
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question 3 a group of friends collects data on how many hours they prac…
More time spent practicing is generally associated with more video likes.
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a researcher plots the relationship between the number of hours spent w…
1. Positive nonlinear association 2. They help identify trends and unusual data that affect the overall relationship.
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number of dogs time spent walking (minutes) 1 25 2 36 3 40 4 52 5 50 6 …
A reasonable estimate for walking \(12\) dogs could be \(115\) minutes. The reasoning is based on observing the upward trend in the data (despite some fluctuations) and making a r…
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question 2 of 10 read this paragraph: because they come from a business…
C. Companies tend to marginalize their products and services.
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spent walking. they kept track of how many dogs they walked and how lon…
The data suggests a nonlinear relationship. Because the differences in the time - spent walking (the \(y\) - values) for a constant difference in the number of dogs (the \(x\) - v…
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2. what theme is common to \the chambered nautilus\ and \the trailing a…
Nature can reveal spiritual truths.
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kai runs a small dog - walking business and is trying to understand how…
The data shows a positive association. We know this because as the number of dogs (the independent variable) generally increases, the time spent walking (the dependent variable) a…
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answer the question correctly to continue: a scientist graphs plant hei…
There is no association
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2. last year, at rolling greens golf course, golfers had a mean score o…
Since \(-0.87>-1.11\) (because \(\vert-0.87\vert = 0.87\) and \(\vert-1.11\vert=1.11\) and for negative z - scores, the one with a smaller magnitude is better in terms of relative…
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1. a population of exam scores is normally distributed with μ = 80 and …
1. \(0.3085\) 2. \(0.0668\) 3. \(0.5868\) 4. \(0.1056\) 5. \(0.1841\)
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answer the question correctly to continue: a coach records the number o…
One player attended many practices but scored very few goals.
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what does it mean to advocate something? a. you speak on behalf of impl…
A. You speak on behalf of implementing it
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answer the question correctly to continue: a scatterplot shows several …
Clustering with possible outliers
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a survey collects the variable umber of bedrooms in an apartment.\ what…
numerical
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answer the question correctly to continue: a scatterplot shows that as …
Positive association
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what is a scatterplot used to show? the steps in a process the shape of…
Connections between two numerical variables.
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which are two characteristics of direct distribution that differ from f…
Direct distribution is also known as a zero level channel, The manufacturer controls all aspects of distribution.
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name 4.4 class work period find the mean, median, and mode for each dat…
\(93\)
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based on the overall trend in the scatterplot, what happens to the numb…
decreases
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screen time vs study time we saved your progress 10 minutes ago questio…
If we assume the options are incorrect (based on visual inspection of the scatter - plot, the outlier is the point with \(x = 4\) and \(y\approx9.5\)). But if we strictly go by th…
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question 1 which phrase best describes the pattern shown in the scatter…
Negative linear association
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4.4 homework name: show all your work on separate sheet of paper 1. joa…
1. Mean: \(\approx13.64\), Median: \(13.5\), Mode: \(12\) and \(15\), Range: \(19\) 2. Mean: \(33\), Median: \(23.5\), Mode: \(15\), Range: \(91\) 3. Mean: \(70.5\), Median: \(70\…
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which of the following is not considered appropriate e - mail etiquette…
B. Always using Reply to All when responding to e - mail that is sent to multiple people
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complete the following analysis mean 26.44 mean 26.19 standard deviatio…
Absolute value of \(t\) is less than the critical value. Therefore the result is not statistically significant. Therefore I will fail to reject the null hypothesis.
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skill rating vs hours of practice what type of trend is shown in the sc…
The skill rating increases, but the gains become smaller over time.
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skill rating vs hours of practice what type of trend is shown in the sc…
2
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for each statement about the selection of distribution channels, select…
1. False 2. True 3. True
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which sales channel has been opened to manufacturers because of digital…
Direct - to - Consumer
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what type of trend is shown in the scatterplot of hours practiced and s…
Positive, nonlinear trend
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what is the slope of the least - squares regression line for these data…
\(0.05\)
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standardized test score, x grade point average, y xy 950 2.19 2080.5 12…
\(0.484\)
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gas score, x sleep time, y (in hours) xy 9.0 5.6 50.4 6.9 6.8 46.92 9.1…
\(-0.22\)
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complete the following analysis mean 26.44 mean 26.19 standard deviatio…
The absolute value of \(t\) is less than the critical value. Therefore the result is not statistically significant. Therefore I will fail to reject the null hypothesis.
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distance from the beach, x (in miles) selling price, y (in thousands of…
\(-0.483\)
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distance from the beach, x (in miles) selling price, y (in thousands of…
\(-0.534\)
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question 25: feat most nearly means: a. tired b. reduce c. deed d. mode…
C. Deed
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height of father, x (in centimeters) height of son, y (in centimeters) …
\(0.54\)
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question 3 of 10 what is the purpose of kings nobel prize acceptance sp…
D. To encourage people to keep fighting for freedom and equality, even when the battle seems impossible to win
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8. find the rate of change from the graph. explain what the rate of cha…
a. The rate of change is \(\frac{1}{5}\) miles per second. It means the sound travels \(\frac{1}{5}\) mile each second. b. The rate of change is \(-\frac{128}{7}\approx - 18.29\) …
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question 2 of 10 read this passage: i refuse to accept the view that ma…
D. King doesn't believe people are so set in their ways that they can't accept a peaceful future.
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question 5 of 5 read this passage: i think alfred nobel would know what…
C. Brotherhood and peace
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cool down: an empty shipping box weighs 250 grams. the box is then fill…
a) Two possible solutions are \((T = 0,W = 250)\) (empty box weight) and \((T = 2,W = 515)\) (box with 2 T - shirts weight). b) The solution \(T = 20\) means that when the weight …
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6. the table shows the relationship between the number of photos x you …
Yes, the relationship is a linear function. The equation of the linear function is \(y=-3x + 512\), which means that for each additional photo taken (\(x\) increases by 1), the me…
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complete the following analysis
The sum of \((x - \bar{x})^2\) for Group 1 is \(1470.3\) and for Group 2 is \(1405.7\)
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in 2015, the state of colorado had 3.35 million cattle and calves, of w…
\(0.04\%\)
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solve each problem. 1. doug estimates that his soccer team will win 7 g…
\(30\%\)
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how many outliers are in the following data set? 167, 180, 188, 177, 18…
A. Zero
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an animal shelter keeps information on the number of dogs they host per…
C. The shelter had 20 or more dogs 50% of the time
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8. your friend brian looks at this problem and says you dont have to bo…
Brian is correct. Since the slope (savings rate) is the same for both John and Brenda's savings equations and assuming their initial conditions (y - intercepts) are different, the…
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a science camp introduced an interactive experiment module. students wh…
A. No conclusion about cause and effect can be made regarding students at the science camp who engaged in the interactive experiment module and their performance in science courses
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lakeland county consists of the north and south zone. the north zone ha…
B. 189
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a group of middle school students was surveyed by the school cafeteria …
D. 89
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a study is being conducted to assess the amount of sleep emergency resp…
C. Decreasing linear
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a chocolate factory produces 30,000 chocolate bars in a day and randoml…
C. 750
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a new weight loss medication is in clinical trials. a scientist wants t…
D. III, IV
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the table gives the temperatures (in °f) of five cities at 6 a.m. on th…
(a) \(21 > - 32\), At 6 a.m., City B was warmer than City C. (b) \(-17 < - 9\), At 6 a.m., City A was colder than City D.
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b. john and brenda both recently graduated from hightower university an…
4. John saves $1123 each month. 5. The equation for John's savings account balance \(y\) after \(x\) months is \(y = 1123x + 1479\)
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a group of 8 students was asked, \how many hours did you watch televisi…
(a) Median: \(12.5\) hours (b) Mean: \(12.1\) hours
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review the passage. the verbal irony is shown in bold. as i started for…
It implies that the people are more interested in entertainment than their own homes.
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review the passage. the personification is shown in bold. little waterf…
It creates a peaceful atmosphere.
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instructions read the question carefully and select the best answer. th…
B. anyone is a possible suspect in the graffiti case