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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are these independent or dependent events? at an animal shelter, lacey …
dependent
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you pick a card at random, put it back, and then pick another card at r…
16.0%
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formulate a linear optimization model for this problem, implement your …
Since the actual running of Excel Solver is required to get the numerical value of the total distribution cost at the optimal solution, and this cannot be done within this text - …
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omar showed his friends several ideas for a comic book series hes drawi…
C. group of stories
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you spin the spinner twice. what is the probability of landing on a pri…
44.4%
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you pick a card at random. without putting the first card back, you pic…
$8.3\%$
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you flip a coin twice. what is the probability of getting tails and the…
25.0%
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a bag with 12 marbles has 4 blue marbles, 3 yellow marbles, and 5 red m…
$\frac{1}{3}$
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you spin the spinner twice. what is the probability of landing on a div…
$\frac{1}{8}$
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a bag with 8 marbles has 4 red marbles, 3 blue marbles, and 1 yellow ma…
$\frac{7}{8}$
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a spinner with 10 equally sized slices has 3 blue slices and 7 yellow s…
$\frac{0}{10} = 0$
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you roll a 6 - sided die two times. what is the probability of rolling …
$\frac{1}{36}$
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a spinner with 6 equally sized slices has 2 yellow slices, 1 blue slice…
$\frac{1}{3}$
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leilas class measured the lengths of 8 leaves. draw a dot - plot for th…
The dot - plot has 4 dots above 3, 2 dots above $3\frac{3}{4}$, 1 dot above $4\frac{1}{4}$ and 1 dot above $4\frac{2}{4}$ on the given number - line representing the lengths of le…
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each bag below has 8 marbles. mary closes her eyes and picks a marble f…
Picking a yellow marble from Bag A is likely. Picking a yellow marble from Bag B is unlikely. Picking a yellow marble from Bag C is certain.
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each bag below has 7 marbles. deon closes his eyes and picks a marble f…
Picking a red marble from Bag A is unlikely. Picking a red marble from Bag B is likely. Picking a red marble from Bag C is impossible.
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the 14 students from mrs. woods class were asked which type of juice th…
A bar - graph with bars of heights 1 for apple, 3 for mango, 2 for pineapple and 8 for orange corresponding to the x - axis labels "apple", "mango", "pineapple" and "orange" respe…
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determining word meaning. despite the enormous strength of rsa and othe…
What part of speech is cryptanalysts? - noun What signals the part of speech for cryptanalysts? - It comes before a verb. What does cryptanalysts mean? - People who engage in cryp…
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connecting shared meaning which two words share a root word meaning hid…
encrypted/decrypt
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analyzing how endings change meaning only a small fraction of the infor…
done to keep safe from attack
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analyzing word meaning. a variation on the trojan horse is a brand - ne…
What part of speech is secure, as used in this excerpt? - adjective What word is secure describing? - software What does secure mean, as used in this excerpt? - safe from attack
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analyzing word meaning a variation on the trojan horse is a brand - new…
1. Adjective 2. Encryption software 3. Safe from unauthorized access or interference (but deceptively so)
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final assessment questions (43 of 45) which visualization would best be…
Histogram.
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the concept of __________ means that a person is capable of determining…
1. B. autonomy 2. A. True
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question 4 (20 points) which is the best example of an ad hominem (pers…
You're nothing but a fearmongering and paranoid war hawk!
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formulate a linear optimization model for this problem, implement your …
The linear optimization model is defined as above. To get the actual solution, use Excel Solver with the objective function and constraints.
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data science is the intersection of: o data applications and statistica…
Business decisions, data/data applications, and statistics/analytics.
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in a statistics class with 136 students, the professor records how much…
30%
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milford lumber company ships construction materials from three wood - p…
The linear optimization model is: Objective function: $Z = 7.3X_{11}+6.8X_{12}+6.1X_{13}+4.6X_{21}+9X_{22}+8.3X_{23}+8.1X_{31}+8.2X_{32}+5.8X_{33}$ Subject to: $X_{11}+X_{12}+X_{1…
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here are boxplots of sat critical reading and math scores for a randoml…
The statement "There appear to be no outliers in the distributions of SAT Critical Reading scores" is justified by the box - plots as there are no points outside the whiskers of t…
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multiple choice 1 point which of the following statements is true about…
The distribution has a region between two data points where no data were observed.
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deserted de·sert·ed (adjective) paragraph 58 meaning quiet and empty be…
The meaning of "deserted" is: quiet and empty because no people are there. An example of its usage is the question "Why might a parking lot be deserted?" A parking lot might be de…
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answers some questions on the board deserted de - sert - ed (adjective)…
The word "deserted" means quiet and empty because no people are there, as in the case of a deserted parking lot.
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wild lumber company ships construction materials from three wood - proc…
The linear optimization model is: Minimize $Z = 7.30x_{11}+6.80x_{12}+6.10x_{13}+4.60x_{21}+9.00x_{22}+8.30x_{23}+8.10x_{31}+5.30x_{32}+5.80x_{33}$ Subject to: $x_{11}+x_{12}+x_{1…
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apter 06 homework: supply chain design millard lumber company ships con…
The formulated linear optimization model is as described above for minimizing the total distribution cost. To find the total distribution cost at the optimal solution, use Excel S…
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which choice best explains why the mid - latitude regions are more dens…
The regions have moderate climate and are more suitable for human living and economic activities compared to higher and lower latitudes.
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one monday morning at school, anuja made tiesha laugh really hard. when…
D. Anuja uses the literal meaning of "cracking up" to make a joke
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b. identify the output variable. the output variable is c. c. use f to …
$(20000,8980)$
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there once was a man whose head and hands worked together to solve prob…
C. A "thinking cap" is a metaphor for making a plan, and a cap is a hat that would keep the head warm
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directions: drag the tiles to the boxes to form correct pairs. match ea…
divine light ↔ stood like a pillar of cloud crimson red ↔ ancient blood - stains against the dark - blue sky reminders of earlier days ↔ torn and faded banners of the departed sum…
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read the lines from the poem. serene the silver fishes glide, stem - li…
C. The fishes' personification makes them seem like they are observers of the world.
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it has been estimated that 40% of marriages end in divorce. if you rand…
0.9899
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find the indicated probability. a report from the secretary of health a…
0.22
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23 multiple choice 4 points find the indicated probability. empirical e…
0.26
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22 multiple choice 4 points determine the probability distributions mis…
$\frac{2}{27}$ (corresponding to option B if the options are labeled as in the multiple - choice setup in the question)
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21 multiple choice 4 points classify the variable as discrete or contin…
discrete
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20 multiple choice 4 points classify the variable as discrete or contin…
continuous
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determine the following proportion. the following table categorizes the…
10/20
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find the indicated probability. the distribution of masters degrees con…
0.474
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a card is drawn from a standard deck of 52 playing cards. find the prob…
$\frac{7}{13}$
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find the indicated probability. a survey of senior citizens at a doctor…
0.90
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find the indicated probability. a survey revealed that 31% of people ar…
0.40
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14 multiple choice 4 points determine whether the events are mutually e…
not mutually exclusive
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statistics show that about 42% of americans voted in the previous natio…
E. 0.20
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determine the following proportion. the following table categorizes the…
2/20
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applicants for a job first submit a written application. based on the w…
B. 0.232
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10 multiple choice 4 points find the indicated probability. a multiple …
0.04
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9 multiple choice 4 points select the most appropriate response. an eve…
that events $A$ and $B$ are dependent.
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8 multiple choice 4 points select the most appropriate response. the mu…
B. The events must be independent.
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multiple choice 4 points select the most appropriate response. two even…
The probability of the other occurring is unchanged.
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6 multiple choice 4 points select the most appropriate response. two ev…
D. The probability of the other occurring is changed.
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4 multiple choice 4 points true or false. if the probability of an even…
B. False
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3 multiple choice 4 points true or false. a probability cannot be negat…
A. True
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2 multiple choice 4 points select the most appropriate response. if the…
We would expect the event to occur about one percent of the time.
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5. why does the story keep talking about andres hairline and his “crown…
The story uses Andre's hairline and "crown" as symbols, possibly representing his self - esteem, pride, or identity, and are likely used for character development or to convey a t…
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1 multiple choice 4 points select the most appropriate response. what i…
C. sample space
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find the standard deviation, $sigma$, for the binomial distribution whi…
C. $\sigma = 10.28$
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find the mean, μ, for the binomial distribution which has the stated va…
C. $\mu = 473.2$
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assume that random guesses are made for 2 multiple - choice questions o…
$0.640$
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39.9% of consumers believe that cash will be obsolete in the next 20 ye…
$0.317$
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twenty percent of adults in a particular community have at least a bach…
A. \(P(x>30)\)
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assume that a procedure yields a binomial distribution with n = 3 trial…
$0.375$
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multiple - choice questions each have five possible answers (a, b, c, d…
$\frac{48}{125}$
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multiple - choice questions each have five possible answers (a, b, c, d…
$P(WWC)=\frac{16}{125}$ $P(WCW)=\frac{16}{125}$
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question 3, 5.2.13 part 1 of 3 multiple - choice questions each have fi…
$\frac{16}{125}$
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multiple - choice questions each have five possible answers (a, b, c, d…
$\frac{16}{125}$
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identify the expression for calculating the mean of a binomial distribu…
A. $np$
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based on a survey, assume that 41% of consumers are comfortable having …
$n = 5$, $x = 2$, $p = 0.41$, $q = 0.59$
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the accompanying table describes the random variable x, the numbers of …
a. \(0.021\) b. \(0.025\) c. A. Since the probability of getting 4 or more sleepwalkers is the probability of the given or more extreme result, the result from part (b) is the rel…
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describe what fixed costs and marginal costs mean to a company. choose …
B. Fixed cost is the constant for a particular product and does not change as more items are made. Marginal cost is the rate of change of cost C(x) at the level of production x an…
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7. a random sample of 1,000 adults complete a survey about nightly slee…
E. Because random sampling was used in the absence of using random assignment, the results can be generalized to the population of adults, but we cannot infer that stress level is…
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the accompanying table describes the random variable x, the numbers of …
0.021
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what is the mean of a probability distribution? choose the correct answ…
B. The mean is the expected value of the random variable.
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explain how to find the mean of a discrete random variable. choose the …
D. To find the mean of a random variable, multiply each value of the random variable by its probability and then add those products.
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determine whether the distribution is a discrete probability distributi…
A. No, because the probabilities do not sum to 1.
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determine whether the distribution is a discrete probability distributi…
A. No, because some of the probabilities are negative and they must all be between 0 and 1 inclusive.
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identify the requirements for a discrete probability distribution. choo…
B. The sum of the probabilities must equal one. Each probability must be between zero and one inclusive.
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fill in the blank. in a probability histogram, there is a correspondenc…
area and probability
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determine whether the value is a discrete random variable, continuous r…
a. B. It is a discrete random variable. b. B. It is a discrete random variable. c. C. It is not a random variable. d. A. It is a continuous random variable. e. B. It is a discrete…
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homework: hw 5.1 question 2, 5.1.ra - 3 fill in the blank. a ______ ran…
continuous
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fill in the blank. a ______ random variable has either a finite or a co…
discrete
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1. which one of the following answer options best represents the basic …
E. Controlling for outside variables, randomizing treatment assignments, and replicating with a sufficient sample size
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exponential regression the table below shows the population of a fictio…
1. \(P(t)=8869.77\times0.983^{t}\) 2. \(1.7\) 3. \(3528\) 4. The population of Lehi \(55\) years after 1880 was about \(3528\) people. 5. \(137\) 6. In \(137\) years after 1880, t…
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nevaehs math teacher finds that theres roughly a linear relationship be…
The number of hours a student should spend on their homework to expect a score of 81 on the quiz.
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nakeisha is going to the amusement park, where she has to pay a set pri…
The total amount of money Nakeisha will spend if she goes on 1 ride.
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fwam is preheating his oven before using it to bake. fwam wants to pred…
The oven's temperature after 1 minute.
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what is the meaning of the word bestow as used in the passage? a tradit…
to present or provide
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text - dependent questions the lightning thief, chapter rl.4.1, rl.4.2,…
1. D. intelligent 2. Root: ratio (reason, logic), Suffix: -al (makes it an adjective) 3. Rational means having the ability to think, understand, and make logical judgments.
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what is the meaning of the word pertain as used in the passage? brett i…
to have to do with
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what is the meaning of the word morsel as used in the passage? after a …
tiny bit of food