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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the 2008 general social survey asked a large number of people how much …
- Sample size is greater than 30 (checked, as \(n = 42>30\)) - Normal population (checked, as the population is normally distributed) - Simple random sample (checked, as it is a r…
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sort each change or goal into the category where it fits best. budgetin…
### Changes that will result in income: - raising my monthly net pay (Raising net pay means more money coming in, so it's an income - related change.) ### Changes that will result…
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the photograph above depicts a traditional chinese wedding. this cultur…
c. symbolic meaning
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read the excerpt from act ii of the importance of being earnest. algern…
C. small, E. young
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understanding a paradox algernon. it is awfully hard work doing nothing…
Doing nothing seems like it should be quite easy, but sometimes it really can be difficult to do nothing.
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a research center poll showed that 77% of people believe that it is mor…
0.23
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there are 15,656,866 adults in a region. if a polling organization rand…
A. The selections are dependent, because the selection is done without replacement. ### Second Question (If dependent, can they be treated as independent?)
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express the indicated degree of likelihood as a probability value betwe…
0.1
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in a certain instant lottery game, the chances of a win are stated as 2…
0.23
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for a certain casino slot machine, the odds in favor of a win are given…
0.17
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7. what are some other good etiquette habits? text when you are running…
- Text when you are running late. - Don't use "chatspeak." This is a way to really lose understand and credibility. omg the boyz and I are gunna prolly go to dinner 2nite b/ - Add…
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sixteen of the 100 digital video recorders (dvrs) in an inventory are k…
0.16
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6. sarcasm is great for text messages. everyone can read through the li…
A. Actually no. sarcasm should be avoided. You can't read tone in a text message and you can get in to arguments or hurt someone's feelings without meaning to
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a. find the probability that when a single six - sided die is rolled, t…
0.167
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7. what are some other good etiquette habits? responding with the right…
- Responding with the right amount of information - Adding a one or two emoji's to clarify your meaning - Text when you are running late - Don't use "chatspeak." This is a way to …
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(d) $\frac{4}{9} \\times \frac{3}{4} =$
\(\frac{1}{3}\)
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$\\frac{9}{8}×\\frac{4}{5}=$ (d) $\\frac{4}{9}×\\frac{3}{4}=$
$\frac{9}{10}$ ### Second Problem: $\boldsymbol{\frac{4}{9} \times \frac{3}{4}}$
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suppose that a library contains 12,000 books now, and adds 200 books ev…
\( P_t = 12000 + 200t \) ### Part (b)
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type the missing number in this sequence: 1, □, 64, 512, 4,096, 32,768
8
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type the missing number in this sequence: 1, □, 16, 64, 256 submit
4
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type the missing number in this sequence: 4, 16, 64, , 1,024, 4,096
256
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type the missing number in this sequence: 1, 2, 4, , 16, 32
8
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type the missing number in this sequence: 1, 3, 9, 27, submit
81
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read the excerpt from a speech by ronald reagan in 1983. the defense po…
A. The United States is strong and will defend any nation facing communist aggression.
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read this passage from a speech by ronald reagan in 1983. i urge you to…
C. The Soviet Union is a cruel nation that started the Cold War.
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in his small idaho school, football meant everything to ernesto ( eto\)…
including facts and details about the topic.
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the equation $y = 4x + 60$ and the table each describe a linear functio…
A. The linear function described by the equation has the greater rate of change. C. The linear function described by the equation has the greater initial value.
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find the value of the following \\(\frac{3}{4}\\) of \\(\frac{1}{4}\\) …
$\frac{3}{16}$ ### Part 2: Multiply the fractions #### (a) $\frac{2}{5} \times \frac{1}{3}$
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explain the meaning of the term \sample distribution.\ a sample distrib…
A. sample data
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what is the range of this function? (2, 5) (3, -4) (0, -5) (10, -6) (7,…
\(\{-6, - 5, - 4, 5, 7\}\) (the option with this set)
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find the linear function that is the best fit for the data. | x | y | |…
$y=0.5x + 0.5$
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can the scatter plot be fit exactly or only approximately by a linear f…
A. The scatter plot can only be fit approximately by a linear function because no straight line will fit all points.
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without graphing, determine if the following data set is exactly linear…
Nonlinear
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the average reading score on certain tests is given by $y = 0.153x + 25…
1994
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watch the video and then solve the problem given below. click here to w…
$y = 0.302x + 2.121$
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1. what is the meaning of the word demokritos? a. king of the free b. p…
1. B. people-powered 2. D. foreigners 3. A. Direct democracy
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20. graph the compound inequali 3x + 1 < 4 or 2x - 5 > 7
The solution to the compound inequality \(3x + 1 < 4\) or \(2x - 5 > 7\) is \(x < 1\) or \(x > 6\). The graph has an open circle at \(1\) with shading left, an open circle at \(6\…
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the table gives the projections of the population, in millions, of a co…
a. A b. $y=1.893x + 245.696$
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the table gives the projections of the population, in millions, of a co…
C. <The graph with steadily increasing points matching the (x,y) pairs>
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the table shows the national expenditures for health care (in billions …
\(y = 188x + 1530\)
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7. which correlation best describes the scatterplot below? a. positive …
C. no correlation
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détente means increased openness. restructuring. reform. a relaxing of …
a relaxing of tensions.
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6. which correlation best describes the scatterplot below? a. positive …
B. negative correlation
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as a large group of senior chinese scholars and activists wrote in an o…
B. China should begin to support and promote human rights.
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if $2000 is invested at 6% simple interest, the initial value and the f…
(a) B. Yes, the first differences are constant for uniform inputs. (b) A. $S=120t+2000$
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if $20000 is invested at 6% simple interest, the initial value and the …
B. Yes, the first differences are constant for uniform inputs.
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why cant first differences be used to tell if the following data is lin…
A. The difference between inputs is not constant.
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using time schedules buses run every day from smith center to springfie…
Earliest arrival time: 2:35 pm Time between now and arrival: 2 hour(s) and 51 minutes
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without graphing, determine if the following data set is exactly linear…
Nonlinear
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without graphing, determine if the following data set is exactly linear…
Nonlinear
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create a linear model for the data in the table. write a linear model f…
$y=3.929x + (-14.119)$
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find the linear function that is the best fit for the data. | x | y | |…
$y=2.5x+(3.5)$
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can the scatter plot be fit exactly or only approximately by a linear f…
B. The scatter plot can be fit exactly by a linear function because the first differences of the outputs are equal.
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create a scatter plot for the set of data. | x | y | | --- | --- | | 1 …
A. <The scatter plot with x-axis 0-10, y-axis 0-20, plotting points (1,6), (3,9), (5,12), (7,15), (9,18)>
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12. a function shows the number of tickets sold for a school play. a. {…
B. {0, 1, 2, 3, ...}
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number of deaths due to suicide, by firearm or other means, 2011 to 202…
B. Firearm - related suicide deaths among immigrants have risen by 66% from 2018 to 2022
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question 23 (4 points) when x is the number of years after 1990, the wo…
33.8%
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section 3: appropriate domain (questions 10–12) choose the most appropr…
A. $\{0, 1, 2, 3, \dots\}$ ### Question 11
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an electric utility company determines the monthly bill by charging 81 …
$f(500) = 427.55$, this means that the monthly charge for 500 kilowatt-hours is $\$427.55$
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question 42 (2 points) which of the following results from measurements…
d) National Crime Victimization Survey
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how do you write 1.3555... using bar notation? \\overline{1.3555} \\ 1.…
\(1.3\overline{5}\) (the last option among the given choices, which is \(1.3\overline{5}\))
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sean says that \\(\\frac{9}{40} = 0.\\overline{2}\\). do you agree with…
No, Sean needs to keep dividing.
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what is the decimal form of \\(\frac{4}{11}\\)? 0.363636... 0.363666...…
0.363636...
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1. how many ounces are there in a normal bottle (750ml) of wine? using …
\(24.77\) ounces ### Problem 2:
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order the numbers from greatest to least. 33 33.10 33.01 34
34, 33.10, 33.01, 33
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draw a model to represent the following problem. 10 ÷ 2
One way to model $10\div2$ is by drawing 10 objects (e.g., circles) and dividing them into 2 equal groups of 5. Another way is using a rectangular model divided into 2 equal parts…
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the photograph above depicts a traditional chinese wedding. this cultur…
c. symbolic meaning
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the painting above is an example of how an artist can use _____________…
d. complementary colors
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question 20 (2 points) ______ studies suggest that a large amount of hi…
c) Self - report
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question 18 (2 points) juvenile court statistics annuals are often crit…
a) are brought to the attention of the court
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question 1: which of the lines (a, b, c, or d) shown above is most like…
1. C 2. B 3. Range, Average 4. The ticketing system that counted customers had a bug so that it counted too many customers; By mistake, the person entering the data added a zero t…
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the next week, with the release of the blockbuster sequel, the haunting…
Question 1: C Question 2: B
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the concept of a \social contract\ is best described as: a written cons…
A philosophical idea where people give up certain freedoms in exchange for societal protection. A legal agreement between citizens and their government.
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find the mean age of someone shopping at store a. solve on paper. then …
# Explanation: ## Step1: Identify each data point From the dot plot: 3 dots at 8, 1 dot at 32, 1 dot at 42 (wait, no, let's check the scale. Each major tick is 4 units? Wait, 8, 1…
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find the mean age of someone shopping at store a. solve on paper. then …
\(\frac{74}{3}\) (or approximately \(24.67\))
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a bag contains the following fourteen marbles. deepak randomly chooses …
P(green) = $\frac{5}{14}$ P(red) = $\frac{1}{7}$ P(green and red) = $\frac{5}{98}$
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question 3 please define c. wright mills sociological imagination. the …
D. How individuals understand their own and others’ pasts in relation to history and social structure.
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which scenario depicts two independent events? a teacher is calling on …
B. The girls’ basketball team is playing against the boys’ basketball team. The coach chooses a captain for the girls’ team and then chooses a captain for the boys’ team.
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question 6 (2 points) which of the following is an oft - cited problem …
a) The statistics reflect official police policy rather than the amount of youth crime.
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consider a single spin on the spinner shown below. which events are mut…
- landing on an unshaded portion and landing on 2 - landing on a shaded portion and landing on 3 - landing on a shaded portion and landing on an unshaded portion
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6. the boxplot summarizes information about the numbers of hours worked…
Range: $80 - 0 = 80$ Interquartile Range: $68 - 10 = 58$ ### Part b
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the following scores are written in ascending order: a, b, c, d, e, f, …
Median ### Part b
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april is randomly choosing five cds to bring in her car from the follow…
B. choosing five CDs where not all of them are pop
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dayshawn can choose two of his four t - shirts to take on a weekend tri…
\(S=\{AB, AC, AD, BC, BD, CD\}\) (the third option)
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alberto and bianca run a 50 km race. the illustration below shows the g…
- Early in the race, **Alberto** runs faster. - Alberto maintains a speed of $\boldsymbol{20}$ km/h during the first hour of the race. - Meanwhile, Bianca's running speed **increa…
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jasmine rolls a number cube 72 times. the number 2 is rolled 13 times a…
# Explanation: ## Step1: Find total favorable trials To find the number of times a 2 or 3 is rolled, we add the number of times 2 is rolled and the number of times 3 is rolled. So…
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1. after kicking, one coach likes to play practice games with 6 players…
The possible number of players are positive integer multiples of 6, such as 6, 12, 18, 24, etc. If we consider the smallest non - zero number of teams (at least 1 team), the possi…
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a farmer has an orchard that covers an area of 40 acres. he grows apple…
37.5% (which corresponds to the option "37.5%")
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mariah is randomly choosing three books to read from the following: 5 m…
- There are $_{20}C_{3}$ possible ways to choose three books to read. - There are $_{5}C_{3}$ possible ways to choose three mysteries to read. - The probability that Mariah will n…
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it is estimated that 12 large pizzas are about right to serve 38 studen…
8
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exercises 1. the following automobile prices are listed in descending o…
\(\frac{6d - a - b - c - x - y - w}{7}\) (or \(d - \frac{a + b + c + d + x + y + w}{7}\)) ### Problem 2 (Sub - part a) First, we need to sort the eight prices: \( \$31,000 \), \( …
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four swimmers, daniela, camille, brennan, and amy, compete on a relay t…
# Explanation: ## Step1: Identify the event of Camille as final swimmer First, we determine the event where Camille is the final swimmer. Looking at the sample space \( S=\{CBA, C…
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paige rolls a number cube sixty - four times. the number 4 comes up fou…
31
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carla can choose two of her three pairs of sneakers to take to a track …
\( S = \{AB, AC, BC\} \) (the third option)
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3. andre took 6 kicks and made 4 goals: \\(\frac{4}{6}\\). tom wants to…
Two possible fractions are \(\frac{6}{9}\) and \(\frac{8}{12}\) (or \(\frac{14}{21}\), \(\frac{16}{24}\) etc. when considering more than 20 kicks).
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the following newspaper type graphic illustrates the ideal family size …
Pie chart (the option would be the one labeled "Pie chart" among the choices, e.g., if the options are as in the image: the pie chart option is the correct one, so the answer is t…
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the following newspaper type graphic illustrates the ideal family size …
Dot plot
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the following bar graph shows the median income for females in a certai…
B. This graph indicates that median income for females has increased slowly over the given time period.
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question part 2 of 3 completed: 20 of 27 my score: 19.8/27 pts (73.35%)…
D. Median Income for Females (with the corresponding bar graph having a proper y - axis scale, uniform bar widths, and showing the median income trend from 2018 - 2022 accurately)
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the following bar graph shows the median income for females in a certai…
B. The vertical axis starts at 35,000 instead of 0. This tends to indicate that the median income for females changed at a faster rate than it actually did.