统计与概率
数据分析、概率分布、假设检验与统计方法。
-
how many different ways can the letters of \personnel\ be arranged? if …
The number of different ways that the letters of "personnel" can be arranged is \(90720\). The probability that the result will be "personnel" when arranged in a random order is \…
-
in a horse race, a particular bet is won if you selected the two horses…
$0.00654$
-
meanwhile, a few crew members began to ______ near the marketplace, eye…
1. D. loiter 2. No correct option provided
-
in a horse race, a particular bet is won if you selected the two horses…
$0.0065$
-
a social security number consists of nine digits in a particular order,…
$\frac{1}{100000}$
-
a thief steals an atm card and must randomly guess the correct three - …
$\frac{1}{343}$
-
a thief steals an atm card and must randomly guess the correct three - …
$\frac{1}{343}$
-
a thief steals an atm card and must randomly guess the correct three - …
The number of possible codes is 343. The probability of a correct guess on the first try is $\frac{1}{343}$.
-
what does the underlined word mean? crawford pounded canelo in the head…
H. hit
-
write a prediction line (equation of line of best fit) for the points i…
The equation of the line of best fit is $y = 3x+1$, and when $x = 25$, $y = 76$.
-
what is the equation of the trend line for the scatter plot? ○ y = -0.7…
y = -0.7x+14
-
fill in the blank. a ______ probability of an event is a probability ob…
B. conditional
-
“at least one” is equivalent to “at least one” is equivalent to “one or…
"one or more"
-
distribution and fulfillment centers store and _______ products for bus…
ship
-
1) the scatter plot below shows a relationship between hours worked and…
1. Strong positive correlation (not given as an option in the provided choices, but based on analysis) 2. D. No correlation 3. C. Strong negative correlation
-
a scatter plot includes the following points (0, 1500), (8, 3700) write…
D. 5625
-
assume that there is a 6% rate of disk drive failure in a year. a. if a…
$0.999784$
-
a distribution channel is a method used to get a product from the _____…
producer (or manufacturer)
-
assume that there is a 6% rate of disk - drive failure in a year. a. if…
a. $0.9964$ b. $0.9998$ (rounded to four decimal places)
-
question 17 1 pts according to insurance statistics, __________ injurie…
C. back
-
the table below displays results from experiments with polygraph instru…
0.738
-
at that moment the bird began to flutter, but the wings were uncoordina…
What symbol does this passage describe? Scarlet ibis What is the literal meaning of this symbol? A type of bird What does the symbol represent? Doodle (a young, frail boy)
-
bell ringer - sep 22 1) find the z - scores of each score in the follow…
1) The z - scores are approximately: - 1.46, 0.28, 1.02, - 0.30, - 1.14, - 0.67, 1.07, - 0.56, 1.55, 0.23. 2) The first quartile $Q_{1}=47.25$ and the third quartile $Q_{3}=82$.
-
in an experiment, college students were given either four quarters or a…
a. $0.604$ b. $0.298$ c. A. A student given four quarters is more likely to have spent the money than a student given a $\$1$ bill
-
read the following excerpt from \sweat\. \oh well, whatever goes over t…
The text does not clearly state which line is being referred to as "this line". Assuming it means the initial line "Oh well, whatever goes over the Devil's back, is got to come un…
-
in an experiment, college students were given either four quarters or a…
$0.298$
-
in an experiment, college students were given either four quarters or a…
\(0.604\)
-
in an experiment, college students were given either four quarters or a…
a. $0.641$ b. $0.359$ c. B. A student given four quarters is more likely to have spent the money
-
in an experiment, college students were given either four quarters or a…
0.359
-
gabriella asked 5 of her hundreds of coworkers how much storage space t…
\(2.55\)
-
the lifespans of gorillas in a particular zoo are normally distributed.…
16
-
2. which risk characteristic is reduced by the risk avoidance strategy?…
2. C. Both probability and impact 3. D. Risk impact is reduced
-
the dot plot shows the number of hours of daily driving time for 14 sch…
Approximately 57th percentile.
-
before sending track and field athletes to the olympics, the u.s. holds…
A. The top 8 Olympic shot putters in the preliminary round threw farther on average than the top 8 U.S qualifiers.
-
the distribution of reading scale scores in the 4th grade at truman ele…
Since the mean $\mu = 221$, the maximum reading - scale score for students to participate in the intervention experiment is 221. (Note: There is an error in the provided options a…
-
in an experiment, college students were given either four quarters or a…
0.157
-
jordyn asked 8 people how many apps they each had on their phone. here …
B. $s_x=\sqrt{\frac{(21 - 47)^2+(28 - 47)^2+\cdots+(70 - 47)^2}{7}}$
-
a set of average city temperatures in october are normally distributed …
0.4032
-
in an experiment, college students were given either four quarters or a…
0.641
-
summarize the meanings of the following prefixes: a. micro:____ b. macr…
a. Small b. Large c. One d. Many
-
in an experiment, college students were given either four - quarters or…
0.843
-
a suffix is a syllable put at the end of a word to change its meaning. …
1. joyful 2. happiness 3. noticeable 4. moveable 5. argument 6. recently 7. kindly 8. laziness
-
a suffix is a syllable put at the end of a word to change its meaning. …
1. joyful 2. happiness 3. noticeable 4. moveable 5. argument 6. recently 7. kindly 8. laziness
-
in an experiment, college students were given either four quarters or a…
0.843
-
in a certain country, the true probability of a baby being a girl is 0.…
$0.949$
-
assuming boys and girls are equally likely, find the probability of a c…
$\frac{1}{2}$
-
let a = the event of getting at least one defective calculator when fou…
A. The event of getting no defects among the 4 calculators.
-
pregunta 4 (1 punto) what does the word par mean? /// ¿qué significa la…
Pregunta 4: a. The amount of throws it should take to hit the target // La cantidad de lanzamientos necesarios para dar en el blanco Pregunta 5: b. the tee box (cone) Pregunta 6: …
-
brenda has an associates degree earning the median salary. she wants to…
b. almost 7 years
-
read the excerpt from \fern in cane we walked down the pike with people…
the comparison of gossiping people to the world
-
if there is a positive correlation between salary and education, then b…
a. accountant
-
if there is a positive correlation between salary and education, then b…
Veterinarian
-
unbe - \leaf\ able antonyms antonyms are words with opposite meanings. …
1. Yellow 2. Yellow 3. Orange 4. Orange 5. Yellow 6. Yellow 7. Orange 8. Yellow 9. Orange 10. Yellow 11. Orange 12. Yellow 13. Orange 14. Yellow 15. Orange 16. Yellow
-
a survey about study habits is administered to a random sample of 50 co…
A. 3.73 to 4.67 hours
-
a random sample of 30 students had a final exam mean score of 86 with a…
D. 29.3%
-
which situation is the best example of competition in an economic syste…
A small CD store slashed its prices to attract customers from a larger store that sells CDs and DVDs.
-
choose all values of the correlation coefficient, r, that indicate a st…
A. \(r=-0.85\), D. \(r = 0.90\)
-
which two tables represent data sets that could be fit to a normal dist…
B. E.
-
question 1 - 12 a scientist is studying the relationship between the we…
strong negative linear relationship
-
what is the probability of tossing a coin and getting a head 4 times in…
D. $\frac{1}{16}$
-
the data points show the amount of money y (in dollars) in an account a…
(a) Figure 2 (b) $\$3354$
-
a scientist analyzed numerous samples of drinking water for the presenc…
A.
-
3. in paragraphs 10 - 11, what does the description of the houses exter…
3. The city experienced a nuclear explosion, leaving only this house standing. 4. It is an irrational suspicion of the outside world.
-
which two statements about conditional probability are true? a conditio…
C. Conditional probability, $P(A|B)$, is the probability of event $A$ occurring given that event $B$ has occurred. F. The probability that it is raining if we already know it is c…
-
there are 50 red beans and 50 white beans in a bag. the first bean sele…
E. $\frac{50}{100}$
-
question 18 of 22: 7.1 section exercise 47 - 50 (clic) score: 1 / 1 poi…
-1.88, 1.88
-
question 17 of 22. 7.1 section exercise 43 - 46 (calc) score: 1 point s…
$0.61$
-
use the ti - 84 plus calculator to find the z - score for which the are…
0.23
-
multiple - choice question repealed means... strengthened put in place …
C. overturned
-
benjamin church was a double agent. what does that mean? he was a man w…
He spied for the British and the French.
-
the prefix trans- means across or beyond. what does the word transposit…
C. rearrangement
-
what is the correct meaning of the word temperament? mona was worried a…
personality traits
-
what is the correct meaning of the word circumnavigate? she took the ch…
D. travel around
-
what is the correct meaning of the word unanimous? discussed at great l…
agreed upon by everybody
-
what is the correct meaning of the word meddle? listen carefully remain…
D. interfere
-
what is the correct meaning of the word concept? the teacher explained …
idea
-
the area of the shaded region is 0.2744.
$0.2744$
-
the area of the shaded region is 0.2744. part 4 of 4 (d) the area of th…
0.3853
-
question 1-6 petra is a personal trainer at a gym and wants to track th…
The function is an appropriate fit and represents a positive, linear association between hours of exercise and weight loss.
-
a defunct website listed the \average\ annual income for florida as $35…
A. The term average is often used in statistics to represent the mean.
-
which meaning of lapse most closely matches its meaning in the followin…
C. verb | to come to an end, because of a lack of use or renewal
-
3) below is an ogive of the commute times of a random sample of teacher…
a) Locate 50% on the y - axis (cumulative relative frequency), draw a horizontal line to the ogive, then a vertical line to the x - axis. The x - value is the median commute time.…
-
find each of the shaded areas under the standard normal curve using a t…
$0.0059$
-
2) the following data represents a sample of senior students in a high …
a) The range is 50. Interpretation: It shows the difference between the highest and lowest number of books read in the sample. b) The standard deviation is approximately 20. Inter…
-
unit 1: one variable data l6 practice - measures of center and spread 1…
a) Mean: $\approx116.67$, represents the average calories per serving. Median: $125$, is the middle - value of the ordered data. b) Mean: $91$, represents the average calories per…
-
how do you warn the vehicle behind you that you intend to leave traffic…
Tap the brake, Use your turn signal Median barriers, Guard rails, Brake away signs, Rumble strips, Controlled access
-
the owners of a coffee shop are gauging interest in the new baker items…
0.48
-
y = 5x + 22 62 = 5x + 22 40 = 5x x = 8 logan noticed that his basil pla…
The number of days that the plant has been growing.
-
overall assignment score: 85% fifteen items or less: the number of cust…
(a) $\mu_X = 2.25$ (b) $\sigma_X\approx1.2196$
-
find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
$35.4$
-
(type an integer or a decimal. do not round. use a comma to separate an…
D. The jersey numbers are nominal data and they do not measure or count anything, so the resulting statistics are meaningless.
-
prepare your role: vocabulary. identify puzzling or unfamiliar words. y…
To answer this, one would need to consider the character's goals, actions, and circumstances in relation to the ideals of the American Dream such as upward social mobility, succes…
-
find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
47
-
a defunct website listed the \average\ annual income for florida as $35…
C. The term average is often used in statistics to represent the mean.
-
11 multiple choice 1 point retirement account distributions discretiona…
11. B. Unearned Income 12. C. Earned Income
-
2. short answer: explain in your own words what “popular sovereignty” m…
2. Popular sovereignty is the principle that the power of a government stems from the people, who are the ultimate authority in political matters. 3. C. The happiness of the people
-
a colleges baseball roster consists of 11 pitchers, 3 catchers, 8 infie…
$\frac{616}{312455}$
-
the table below shows the highest temperatures recorded in august for s…
3. 11 4. 4) I, II, and III
-
the table below shows the highest temperatures recorded in august for s…
1. (3) 11 2. 4) I, II, and III
-
do you think satire is an effective way to critique something? how effe…
Satire can be an effective way to critique something through irony and humor, but its success in criticizing societal issues varies based on audience perception and context.