统计与概率
数据分析、概率分布、假设检验与统计方法。
-
4. the formula for the volume of a rectangular solid is v = lwh where l…
4. $\frac{V}{l}=wh$, $\frac{V}{wl}=h$, $\frac{V}{h}=lw$ 5. C. the rate the price of a gallon of milk increases each year.
-
which measure of variation is most sensitive to extreme values? choose …
D. Range
-
the body - temperatures of a group of healthy adults have a bell - shap…
a. 99.7 b. 95
-
use the body temperatures, in degrees fahrenheit, listed in the accompa…
does not meet
-
use the body temperatures, in degrees fahrenheit, listed in the accompa…
The estimated standard deviation is more than $0.2^{\circ}$ greater than the actual standard deviation. Thus, the estimated standard deviation does not meet the goal.
-
use the body temperatures, in degrees fahrenheit, listed in the accompa…
$0.95$
-
use software or a calculator to find the range, variance, and standard …
$0.48$
-
use software or a calculator to find the range, variance, and standard …
$0.79$
-
in 1965, researchers used random digit dialing to call 1100 people and …
1. C. Simple random sampling was used, since each number had an equal chance of being dialed, so all samples of 1100 phone numbers had an equal chance of being selected 2. B. Indi…
-
which sentences from frederick douglasss speech, what to the slave is t…
The fact is, ladies and gentlemen, the distance between this platform and the slave plantation, from which I escaped, is considerable — and the difficulties to be overcome in gett…
-
use software or a calculator to find the range, variance, and standard …
$0.69$
-
use software or a calculator to find the range, variance, and standard …
Since the data in the table is not in a clean copy - pastable format, we cannot calculate the exact standard deviation. But the process to calculate it is as above. If you provide…
-
a recent newspaper article reported on americans eating habits. the art…
B. The variable is quantitative because a percentage, 26%, is being recorded and this is a numeric measurement.
-
a recent newspaper article reported on americans eating habits. the art…
C. The variable is quantitative because a percentage, 26%, is being recorded and this is a numeric measurement.
-
listed below are the amounts (dollars) it costs for marriage proposal p…
The range of the sample data is 2462 dollars. The standard deviation of the sample data is 717.8 dollars. The variance of the sample data is 515236.8 dollars$^{2}$. C. Yes, the la…
-
jessica has three sport cards, one for football (f), one for baseball (…
C. 9
-
a may 2020 gallup poll asked, do you think marriages between same - sex…
A. This response variable would be classified as a categorical variable because the variable options use words and not numerical values
-
steve and karla are studying the text - messaging habits of middle scho…
1. First, recall the formula for the inter - quartile range (IQR): $IQR = Q_3 - Q_1$, where $Q_1$ is the first quartile and $Q_3$ is the third quartile. - Assume from the box - pl…
-
which sociological perspective emphasizes the distribution of power and…
B. conflict perspective
-
rick wants to know the height of the students in seventh - grade. he ra…
C. On average, the students are 56 inches tall; D. About one - half of the students are more than 46 inches tall
-
select the correct answer from each drop - down menu. rae and doris are…
The median of Rae's data is 2.22 minutes, and the median of Doris' data is 2.14 minutes. The interquartile range for Rae is 0.3, and the interquartile range for Doris is 0.19. The…
-
below are the jersey numbers of 11 players randomly selected from a foo…
A. Jersey numbers are nominal data that are just replacements for names, so the resulting statistics are meaningless
-
a sociologist observing behavior at a college football game would most …
C. the interaction among fans during the pre - game ritual of tailgate parties.
-
select the correct answer. a city planner is mapping the population of …
A. choosing every 100th name
-
identify the symbols used for each of the following: (a) sample standar…
a. g b. g c. $g^{2}$ d. $g^{2}$
-
select the correct answer from each drop - down menu. shona spins a spi…
The first blank: 18 The second blank: 24
-
select the correct answer. how could you adjust the line in this scatte…
C. Decrease the y - intercept, and increase the slope.
-
jenna grabs a sample of trail mix from a bag. the mix contains peanuts,…
a sample of 40 pieces, a sample of 20 pieces, a sample of 10 pieces, a sample of 5 pieces
-
a random sample of 10 subjects have weights with a standard deviation o…
$119.8687$ kg$^{2}$
-
drag each label to the correct location on the tree - diagram. each lab…
The top - unlabeled box (first - level) is road 1. The unlabeled box under road 1 (second - level) is scooter.
-
select the correct answer. the scatter plot shows the association betwe…
B. $y=\frac{160}{7}x + 100$
-
the development of a system of mass production in manufacturing meant t…
machines rapidly produced large amounts of product.
-
an animal sanctuary houses a variety of animals. to understand the work…
(a) 6 (b) 7 (c) Goats, Otters, Rabbits
-
a college radio station surveyed 420 incoming freshmen to see how many …
(a) 254 freshmen (b) 121 freshmen (c) 197 freshmen
-
listed below are the measured radiation emissions (in w/kg) correspondi…
B. There is no mode
-
listed below are the measured radiation emissions (in w/kg) correspondi…
b. 0.660 c. 0.835 d. B. There is no mode
-
listed below are the measured radiation emissions (in w/kg) correspondi…
0.835
-
answer the questions below. (a) from the 13 albums released by a musici…
(a) 715 (b) 474306
-
listed below are the measured radiation emissions (in w/kg) correspondi…
$0.775$
-
select the correct answer. what does it mean for a credit to transfer? …
A. that each academic institution will accept the credit a student earns for the class
-
(a) complete the table. | | number of stores | percent | number of degr…
| | Number of Stores | Percent | Number of Degrees | |--|--|--|--| | Pizza chain A | 3600 | 20% | 72 | | Pizza chain B | 7200 | 40% | 144 | | Pizza chain C | 7200 | 40% | 144 |
-
feelings number percent (rounded to one decimal place) degrees (rounded…
| Feelings | Number | Percent | Degrees | | ---- | ---- | ---- | ---- | | Love it | 2 | 7.1% | 26° | | Like it | 5 | 17.9% | 64° | | Take or leave | 12 | 42.9% | 154° | | Don't li…
-
raina won a charity raffle. her prize will be randomly selected from th…
(a) $8:1$ (b) $1:8$
-
label where each country explored/colonized: spain, france, england. wh…
1. The main reasons the Spanish explored the Americas: They sought gold, silver, and other valuable resources, wanted to spread Christianity, and aimed to gain power and prestige …
-
listed below are pulse rates (beats per minute) from samples of adult m…
The mean for males is $72.5$ beats per minute and the mean for females is $74.4$ beats per minute.
-
keith is at the grand opening celebration of a supermarket. he spins a …
(a) $7:3$ (b) $3:7$
-
which of the following is always true? choose the correct answer below.…
C. In a symmetric and bell - shaped distribution, the mean, median, and mode are the same
-
fill in the blank. the measure of center that is the value that occurs …
mode
-
which of the following is not a measure of center? choose the correct a…
D. census
-
fill in the blank a value at the center or middle of a data set is a(n)…
measure of center
-
a coin is flipped and a number cube is rolled. the tree - diagram below…
(a) 12 (b) 4 (c) 3
-
a students course grade is based on one midterm that counts as 10% of h…
$82.95$
-
one equation in a system of equations with one - solution is 4x + 2y = …
B. \(x - 6y=-12\), D. \(-3x + 10y = 1\)
-
write the vocabulary word that means the same as the one given in each …
1. brilliant 2. introverted 3. extroverted
-
a coin is tossed three times. an outcome is represented by a string of …
| Event | THT | THH | HTT | TTT | HHH | HTH | TTH | HHT | Probability | |---|---|---|---|---|---|---|---|---|---| | Event A: Exactly one head | $\boxed{\checkmark}$ | | $\boxed{\c…
-
use the magnitudes (richter scale) of the earthquakes listed in the dat…
A. Yes, because this value is very far away from all of the other data values
-
counting and probability. determining a sample space and outcomes for a…
Sample space: {A, B, C, D, E} Event of choosing the letter B: {B}
-
a number cube with faces labeled from 1 to 6 will be rolled once. the n…
Sample space: {1, 2, 3, 4, 5, 6} Event of rolling a number from 3 to 6: {3, 4, 5, 6}
-
use the space below to describe the process of converting and ordering …
The process of converting real numbers to decimals involves division for fractions and approximation for roots. Descending order is from largest to smallest. To put numbers in des…
-
4 pts which choice is an accurate definition of a hypothesis? a way of …
A tentative explanation
-
1. what makes verses different from other types of writing? 2. how does…
1. Verses often feature rhythm, meter and more figurative language. 2. Structure creates emphasis, rhythm and unity. 3. Poems by Langston Hughes on racial equality etc. 4. Add dep…
-
2) in the second and third sections (63 - 4), nunez describes a book of…
Without the actual passage text, a specific answer cannot be provided. However, one would look for clues in the text about how Nunez describes the book's practical value, informat…
-
práctica de gráficos ¿cuántas copias del juego a se vendieron en 2010? …
1. 8 millones 2. 7 millones 3. 3 millones 4. 1 millón 5. 21 millones 6. Juego B 7. Juego D 8. 7 millones 9. La primera es vertical y la segunda horizontal. La segunda muestra mejo…
-
find the equation for the least squares regression line of the data des…
\(y = 1.590x+102.850\)
-
1) let t(x) = 72 - 4x represent the temperature in degrees fahrenheit x…
T(3) = 60. This means the temperature 3 hours after midnight is 60 degrees Fahrenheit.
-
grape growers in france think they will have a massive crop this year a…
0.213
-
the actors guild was able to put on a spectacular theatrical production…
3. with very little money
-
a well - known soporific herb, lavender is often used as a gentle treat…
2. sleep - inducing
-
after crashing his small plane on a deserted island, dominic waited fou…
3. The budding connection between Dominic and the pig develops the theme of companionship as salvation.
-
okjokull was born in iceland hundreds of years ago. the locals gave her…
1. It makes the loss of the glacier seem even more tragic.
-
okjokull was born in iceland hundreds of years ago. the locals gave her…
1. It makes the loss of the glacier seem even more tragic.
-
okjokull was born in iceland hundreds of years ago. the locals gave her…
1. It makes the loss of the glacier seem even more tragic.
-
the word stringent derives from the latin root stringere, which means \…
1. severe or strict
-
question 5 select the option that keeps the meaning and combines the se…
B. Tired of the noise, Tom piled pillows over his head until he could no longer hear it.
-
question 4 select the option that keeps the meaning and combines these …
One day I came in earlier than usual and found him in the dining room, running frantically from table to table.
-
select the prepositional phrase that would work best in the space to cl…
A. in recent decades
-
select the independent clause that would work best in the space to add …
the only reason contemporary animal cities aren't as plague - ridden as their medieval counterparts is a single historical anomaly: the modern antibiotic.
-
which of these is a good reason to learn common greek and latin roots, …
C. I, II, III, IV
-
question 7 1 point what is the most likely meaning of the word \host\ i…
C. A large number of people or things
-
question stem: roosevelt says that he will address his fellow americans…
The next sentence: "This is preeminently the time to speak the truth, the whole truth, frankly and boldly."
-
question 4 question stem: how would changing the most memorable part of…
It would alter the rhythm and feeling.
-
question 3 1 point question stem: what does roosevelt mean by “the with…
A. Failed business efforts
-
excerpt from franklin delano roosevelts first inaugural address this is…
Extraordinarily good or attractive
-
question 2 the denotative meaning of a word is figurative can be differ…
## Question 2: D. Is literal ## Question 3: None of the provided options are correct. Synonyms may have different connotations and effects.
-
what is a democracy? the government of the united states is a democracy…
A democracy is a form of government where the people choose their leaders (such as the President, Vice - President, and members of Congress in the United States), and it is based …
-
which of these is a good reason to learn common greek and latin roots, …
C. I, II, III, IV
-
question 7 2 points what is the most likely meaning of the word \host\ …
A. A large number of people or things
-
question 6 question stem: roosevelt says that he will address his fello…
The next sentence: "This is preeminently the time to speak the truth, the whole truth, frankly and boldly."
-
question 4 2 points question stem: how would changing the most memorabl…
It would alter the rhythm and feeling.
-
excerpt from franklin delano roosevelts first inaugural address this is…
C. Failed business efforts
-
excerpt from franklin delano roosevelts first inaugural address this is…
B. Extraordinarily good or attractive
-
which word completes the sentence with the correct meaning and part of …
B. Inform - verb
-
observational studies cannot tell us that two things occur together. if…
C. if one thing caused the other to happen
-
which of the following questions can be examined with empirical observa…
D. Does playing video games improve hand-eye coordination?
-
select the correct answer. which statement best describes president car…
C. He believed that the United States had a moral obligation to promote human rights.
-
read the excerpt below. my fellow citizens, my subject tonight is scien…
the passage of the National Defense Education Act the creation of the National Aeronautics and Space Administration (NASA)
-
drag each label to the correct location on the image. during the 1960s,…
Martin Luther King Jr.: end of segregation, content of a person's character, nonviolent forms of protest Malcolm X: Black nationalism, equality by any means, Nation of Islam
-
what is an inherent zero? describe three examples of data sets that hav…
First - part: C. An inherent zero is a zero that implies none. Second - part: A. Number of years a college student was employed by a particular company B. Average monthly precipit…
-
41. set a and set b each consist of 5 distinct numbers. the 2 sets cont…
A. Mean only
-
name each level of measurement for which data can be qualitative. selec…
C. Nominal, D. Ordinal