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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4 tyler filled a small jar with quarters and dimes and donated it to hi…
a. $0.1d + 0.25q\geq8.50$ c. $2.5+0.25q\geq8.50$ Andre's mistake: When solving $14x=8x$, he should subtract $8x$ from both sides ($6x = 0$, $x = 0$) instead of getting $8 = 14$.
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a bag contains 19 blue, 28 purple, 21 red, and 29 orange balls. you pic…
\(\frac{57}{97}\)
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based on the nuance in the sentence below, what does vices mean? you sh…
bad habits; sins
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mr. george conducted a study in which he measured the time his physics …
C. positive correlation
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find the expected value ($\\mu$) of the random variable with the given …
\(5\)
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find the expected value (μ) of the random variable with the given proba…
\(1.7\)
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the table below gives the probability density of grades for a particula…
\(0.22\)
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the table below gives the probability density for blood types in a popu…
\(0.31\)
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while being an entrepreneur can be the right career choice for many, so…
None of the above
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this data is shown in a bar graph, which description accurately represe…
The bar for very low concentration is twice the height of the bar for medium concentration.
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5 patrick recorded the daily changes of the value of a stock in dollars…
The average daily change in the stock's value is \(-1.71\) dollars.
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which scenario is an example of a dependent event in probability? a. dr…
A. Drawing a card and then drawing a second card without replacing the first
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what is the total number of possible outcomes when rolling two six - si…
C. 36
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what is the probability of the ball landing on a red slot in american r…
C. \(18/38\)
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question 1 (3 points) (03.03 lc) what is the focus of the bandwagon adv…
- Question 1: a. To try to persuade someone to do something based on the fact that 'everyone's doing it' - Question 2: d. Testimonials - Question 3: b. Plain folks
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question #9 which measure is the data point or average of two data poin…
For Question #9: First Quartile For Question #10: 2.71
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question #8 find the interquartile range and sample standard deviation …
\(IQR = 8.9\) and \(s = 7.03\)
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question #7 find the upper quartile of the following set of data: 1 1 4…
\(14\)
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if you roll two six - sided dice, what is the probability of getting a …
A. \(5/36\)
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question #5 find the lower quartile of the following set of data: 2550 …
Question #5: \(2750\) Question #6: \(1690\)
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in a deck of 52 cards, what are the odds against drawing a heart? a. 39…
B. 3 to 1
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what are the odds of drawing an ace from a standard 52 - card deck? a. …
B. 1 to 12
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read the passage from hamlet, act i, scene iii. hamlet: ... but tell wh…
canoniz'd bones, hearsed in death, ponderous and marble jaws
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what is the probability of rolling a 4 with a six - sided die? a. 1/4 b…
d. \(1/6\)
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how do you calculate the probability of two independent events happenin…
C. Multiply the probability of each event
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question #3 the monthly revenue for a company is listed below. determin…
35,850
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1. define mean. 2. what type of graph is used to show the frequency of …
1. The mean is the average of a set of numbers. 2. A histogram. 3. The minimum value, the first quartile ($Q_1$), the median ($Q_2$), the third quartile ($Q_3$), and the maximum v…
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what concept measures the likelihood of an event occurring against it n…
A. Odds
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question #1 a sample of the height of men (in centimeters) is listed be…
Question #1: \(175.5\) Question #2: (Assuming correct calculation based on quartile formula, but if we consider the options given for Question #2 and re - check the sorting (maybe…
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(05.07 mc) read the excerpt from the princess and the goblin by george …
Good vs evil
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how many outcomes are possible when flipping a coin? a. 4 b. 1 c. 3 d. 2
D. 2
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read the following paragraph. although she did not win the election, hi…
facts and statistics, anecdotal evidence, and expert opinion
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a is an example of a game of chance that involves spinning a wheel divi…
1. roulette wheel 2. mutually
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read the paragraph from the section \math in flight.\ pilots use math a…
A. The calculations must be exact for safety's sake.
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the set of all possible outcomes in a probability experiment is known a…
1. sample space 2. intersection (or joint - probability) 3. not 4. probability 5. stock (or financial)
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gavin left his house and drove to the store. he stopped and went inside…
\(6\)
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given a sample mean value $overline{x}$, the critical $z$ values for th…
A. \(33.69 <\mu<36.31\)
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eps intermediate algebra b relative frequencies and association analyzi…
Given that a student has a job, there is a 14% chance he or she is a 10th grader.
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probability measures how likely something is to happen, with values bet…
1. certain 2. \(\frac{1}{13}\) 3. \(36\) 4. affect 5. affects
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question 86 of 100 you roll a pair of dice. if the first die shows a 6,…
B. \(\frac{1}{2}\)
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eps intermediate algebra b relative frequencies and association creatin…
\(a = 0.93\), \(b=1.08\)
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carloss deliveries and total earnings deliveries earnings (e) d e(d) 0 …
18
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directions: match the word on the left with its correct definition or u…
1. C 2. D 3. F 4. G 5. A 6. (No correct match in given options if we follow strict meaning - if we assume no error in options, maybe no answer for this as per given choices) 7. E …
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let a and b be mutually exclusive events with ( p(a)=\frac{1}{4} ) and …
\(\frac{9}{20}\) or \(0.45\)
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at least one of the answers above is not correct. find the following pr…
\(0.9812\)
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find the following probabilities for the standard normal random variabl…
(a) \(0.8438\) (b) \(0.816\) (c) \(0.0188\) (d) \(0.9545\)
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12 erica modified the typography on her teams slide deck. what does thi…
She switched the font style and size.
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what does this passage from \how do i love thee?\ by elizabeth barrett …
D. The speaker does not hesitate to love, and she loves with good intention.
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kenneth stood with his classmates, a fully grown redwood tree among a f…
B. The metaphor suggests that Kenneth is very tall.
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2. greg works as a tour guide. he tracks how tourists heard about the t…
To draw a circle graph (pie - chart), we first need to find the percentage of walk - ins. Then calculate the central angles for each category. The percentage of walk - ins: \(100-…
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1. before a school dance, the organizing committee did a survey of stud…
a) \(137\) b) \(37.96\%\) c) \(36^{\circ}\)
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\dont it sprise you de way dem kings carries on, huck?\ o,\ i says, \it…
Even children recognize the abuse of power
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14. the theoretical probability of drawing an ace from a deck of cards …
C. \(\frac{1}{13}\), D. \(\frac{4}{52}\) (since \(\frac{4}{52}\) simplifies to \(\frac{1}{13}\))
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13. if the theoretical probability of an event is 0.25, what is the per…
d. \(25\%\)
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12. in binomial probability, what does p stand for? a. total probabilit…
B. Probability of success on a single trial
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10. what is the theoretical probability of rolling a 4 on a standard si…
B. \(\frac{1}{6}\)
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9. what is the theoretical probability of rolling an even number on a s…
A. \(\frac{1}{2}\)
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the scatter plot shows the day of a month and the amount of rain in a c…
D. There is an outlier at Day 26; E. There is a gap of no rain falling between Days 10 and 26.
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8. in a batch of 200 products, 5 are defective. what is the theoretical…
A. 0.975
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\dont it aprise you de way dem kings carries on, huck?\ o,\ i says, \it…
Rulers abuse their power
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6. if a student guesses all answers on a 5 - question true/false quiz, …
d. \(0.03125\)
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5. in the context of sports predictions, what role does probability pla…
d. It estimates the likelihood of different outcomes
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4. you flip a coin 10 times and observe heads 7 times. how does this co…
B. Empirical probability is higher than theoretical.
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3. if you flip a coin 100 times and it lands on heads 48 times, what is…
C. 0.48
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2. if the theoretical probability of rain tomorrow is 30%, what is this…
A. 0.3
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1. what is the theoretical probability of drawing a diamond from a stan…
D. \(\frac{1}{4}\)
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the scatter plot represents the number of hours since a city parking lo…
\((36,2)\)
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what does diacope mean? (1 point) o the stating of two opposite ideas u…
the repetition of a word or phrase at the beginning of sentences
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the scatter plot shows the day of a month and the amount of rain in a c…
A. There is an outlier at Day 26. C. There were three days of the month when it rained exactly 27 millimeters. E. There is a cluster of days when it rained between Days 6 and 15.
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what is a key factor in making sports predictions? a. guessing based on…
d. Analyzing statistical data
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the scores on an exam had a mean of 65 and a standard deviation of 7.4.…
Approximately \(9\%\) of the students had a score over \(75\).
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the scatter plot shows the day of a month and the amount of rain in a c…
A. There is an outlier at Day 26; E. There is a cluster of days when it rained between Days 6 and 15.
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identify whether each scenario is an example of logos, ethos, or pathos…
1. pathos 2. ethos 3. logos
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13) below are shown 4 scatter plots, each with an r value to describe t…
\(r=-0.8\), \(r = 1\), \(r = 0\), \(r=-0.5\)
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error analysis the table represents the price and the number of items s…
The correct graph is D. The cluster is between the prices of $15$ and $25$ and between $10$ and $20$ items sold. The friend's error was including the out - lier (the point with pr…
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5. in paragraph 15, the author states that her brother answered proudly…
5. C. She wants to send the reader a message about the pride that comes from choosing one’s own path in life. 6. B. She is implying that her conscience is speaking to her.
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the scatter plot represents the number of hours since a city parking lo…
a. \((2,39)\) b. Clusters around \(x = 4 - 7\) (lower - value) and \(x=7 - 10\) (higher - value) c. Gap between \(x = 7\) and \(x = 11\). Possible cause: Special event/holiday/clo…
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a statistical method for estimating the relationships among variables i…
1. Regression 2. Outlier 3. Sampling 4. Confidence 5. Analytics
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question 8 give an example of a different real - world situation that w…
This real - world situation (the data in the "Juice Bar Orders" table) does not represent a function. Because for the input value of \(2\) (number of fruits added), there are two …
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solve. round to the nearest tenth of a percent. the graph below shows t…
\( 16.7\% \)
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in the blank space below, place the reasoning that best connects the ev…
Soda damages tooth enamel, which is the outermost, visible part of a tooth.
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in football, the accuracy of a quarterback is measured by the rate. the…
- Completion - Earned run average (ERA) - Percentage - Statistics - Probability
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during the month of september, as the number of cars available for sale…
A. There is association but not causation.
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unit 2: the normal distribution l4 practice - the standard normal curve…
1) a) \(X<100\) b) \(z=-0.4\), \(Z < - 0.4\) d) Lower: \(-10^{9}\), Upper: \(100\), Mean \((\mu)\): \(110\), Standard Deviation \((\sigma)\): \(25\) e) \(34.46\) 2) a) \(X > 120\)…
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pete will spin each of these spinners once. how many outcomes are possi…
12
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13. what is the sum of the solutions of the 2 equations below? 8x = 12 …
B. \(7\frac{1}{2}\)
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question 4 (1 point) why did charles guiteau assassinate president garf…
- Question 4: C. he was upset he did not get a job from Garfield through the spoils system - Question 5: B. Pendleton Act (1883) - Question 6: C. railroads traveling between state…
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read the story. as i sat by the window, watching the raindrops drip dow…
It suggests the author's strong desire to begin writing.
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before johannes gutenberg invented the printing press in the fifteenth …
The Gutenberg printing press transformed the spread of knowledge by allowing for the large - scale production of books.
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lacey went birdwatching and saw 8 ducks, as well as 46 other birds. wha…
\(\frac{4}{27}\)
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a florist used several different types of flowers to make a bouquet. wh…
\(\frac{4}{11}\)
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a city held a bike parade. 10 bikers rode recumbent bicycles, and 82 bi…
\(\frac{5}{46}\)
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there are several different kinds of vehicles on a used car lot, so the…
\(\frac{8}{17}\)
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betty runs a day care center. of the 18 children at the day care center…
\(\frac{2}{9}\)
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at a wedding reception, 2 tables have yellow centerpieces and 28 tables…
\(\frac{1}{15}\)
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average yearly precipitation 50 states the graphs shape is best describ…
The mean is greater than the median.
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you spin the spinner once. what is p(8)? write your answer as a fractio…
\(\frac{1}{3}\)
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average yearly precipitation 50 states the graphs shape is best describ…
skewed
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you roll a 6 - sided die. what is p(6)? write your answer as a fraction…
\(\frac{1}{6}\)
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a bag contains 6 marbles, of which 3 are green. what is the probability…
\(\frac{1}{2}\)