统计与概率
数据分析、概率分布、假设检验与统计方法。
-
what is the range of the data set? the range is 7 books. where does the…
The range is 8 books. The dot plot has a peak at 12.
-
question 8 of 10 president jefferson argued that the job of deciding wh…
D. Elected leaders.
-
lizard length (cm) 6 6 6.5 7 7 7 7 8 look at the distribution in the do…
The most common lizard length is 7 cm.
-
lizard length (cm) 6 6 6.5 7 7 7 7 8 make a dot plot of the data. lizar…
A dot plot with: - 2 dots above 6 - 1 dot above 6.5 - 4 dots above 7 - 1 dot above 8 on the given number line (5 to 9 cm).
-
describe the shape of the data distribution. the dot plot is?
symmetric
-
select the word that means lacking social grace. what are good manners?…
gauche
-
select the word that means produced. for most of the twentieth century,…
wrought
-
select the word that means a fixed idea about a group that may be unfai…
stereotype
-
select the word that means emphasize. during political campaigns, many …
accentuate
-
select the word that means having a huge appetite. the shrew is a tiny,…
voracious
-
select the word that means a state of resting mary cassatt was a ninete…
repose
-
match each term to the dot plot with that shape. hint: skewed left mean…
First dot plot → Symmetric Second dot plot → Skewed left Third dot plot → Skewed right
-
describe the data distribution. the dot plot has a peak at 8. the dot p…
12
-
the dot plot shows the weights of boxes of cereal in a supermarket wind…
11
-
describe the data distribution. the dot plot has a peak at 8 the dot pl…
13
-
describe the data distribution. the dot plot has a peak at ? boxes of c…
8
-
question 2 of 5 the declaration of independence says, all men are creat…
A. All men have rights that cannot be taken away.
-
melissa has a collection of bonsai. the dot plot shows the heights of t…
3 bonsai
-
think about the meaning of division. which of these situations does 21 …
The number of groups of \(3\) in \(24\) (the second option).
-
introduced in russia after 1917, the system in which a government contr…
Communism (or Socialist system, with communism being the specific term for the system introduced post-1917 in Russia)
-
expand your vocabulary to explore a new word, like institute, use a sem…
1. - meaning: set up or create - synonyms: found, create, institute - related forms: establishment - example: The company established a new branch in the city. 2. - meaning: have …
-
3 select the correct answer. what does market value of a good or servic…
D. current price of a good or service
-
1 multiple choice 1 point cause there was a need to establish guideline…
Northwest Ordinance
-
read the lines from because i could not stop for death we paused before…
The language suggests an image of gloom and foreboding.
-
why is the image of the setting sun most likely not described in great …
A. It is a common symbol of death that requires little description.
-
last year, andrea ran about 120 kilometers during the months of march, …
Andrea ran about \(116\) km (after rounding \(115.56\) to the nearest whole number). This is about \(4\) km less than last year.
-
(b) which one of the following best describes the explanatory (independ…
(b) The explanatory variable is the age group and the response variable is the percentage of dogs who contracted canine flu. (c) No. There is no procedure, however well-designed, …
-
the following were calculated from the times (in minutes) that 10 indiv…
A. The range will decrease, D. The mean will decrease.
-
the times (in seconds) of 8 runners for the 100 - yard dash are recorde…
Mean: \(13.3\), Median: \(13.7\), Mode: \(14.0\), Range: \(3.2\), IQR: \(2.4\)
-
pedro is driving on a long road trip. he created the graph below to rep…
The \(y\) - value when \(x = 1\) represents the number of gallons of gas left in Pedro's tank after 1 hour of driving.
-
theres a roughly linear relationship between the length of someones fem…
The slope of the line represents the expected increase in height (in centimeters) for each additional centimeter of femur length.
-
annabelle is ordering a taxi from an online taxi service. she has to pa…
The \( y - \)value when \( x = 1 \) represents the total cost of the taxi ride for a \( 1 - \)mile journey.
-
theres a roughly linear relationship between the number of times a spec…
The slope represents the change in temperature for each additional chirp per minute.
-
theres a roughly linear relationship between the length of someones fem…
The slope represents the change in expected height (in centimeters) per one - centimeter change in femur length.
-
julia is preheating her oven before using it to bake. julia created the…
The predicted temperature of the oven after 1 minute of pre - heating.
-
caleb is driving on a long road trip. he created the graph below to rep…
The number of gallons of gas left in the tank after Caleb has been driving for 1 hour.
-
saans math teacher finds that theres roughly a linear relationship betw…
The \(x\) - value when \(y = 90\) represents the number of hours a student should spend on homework to get a quiz score of \(90\).
-
francisco is ordering a taxi from an online taxi service. he has to pay…
The \(y\)-value when \(x = 1\) represents the total cost of a 1 - mile taxi ride (including the flat charge and the charge for 1 mile of travel).
-
theres a roughly linear relationship between the length of someones fem…
The slope represents the increase in expected height (in centimeters) for each one - centimeter increase in femur length.
-
jasons math teacher finds that theres roughly a linear relationship bet…
The \(x -\)value represents the amount of time (in whatever unit \(x\) measures, e.g., hours) a student should spend on homework to have an expected quiz score of \(80\).
-
nine percent of u.s. employees who are late for work blame oversleeping…
0.57
-
nine percent of u.s. employees who are late for work blame oversleeping…
\(0.57\)
-
work and ask uiem wneier uiey uiane oversieeping. ine iandoni vaiiabe r…
The standard deviation of the binomial distribution is approximately \(\boldsymbol{0.57}\).
-
it is commonly believed that the mean body temperature of a healthy adu…
$H_0: \boldsymbol{\mu = 98.6}$, $H_1: \boldsymbol{\mu eq 98.6}$ ### Part b)
-
what are the correct hypotheses? ho: select an answer ? hours h1: selec…
To solve this hypothesis testing problem (likely about the mean number of work hours), we follow these steps: ### Step 1: Define the Hypotheses The problem compares the mean work …
-
13. loris teacher said she writes very effective dialogue. what does th…
C. The reader becomes invested in the characters.
-
10. mr. ellis told his writing students dialogue is meant to give the i…
Writing dialogue is as simple as listening and recording.
-
8. nicole often writes dialogue that turns things upside down or rephra…
It is blatant.
-
what is the p - value? (round to 4 decimal places) using a significance…
The p - value is \(0.0217\) ### Part 2: Making the conclusion
-
at a local community college, the mean gpa of daytime students is 3 wit…
\( H_0: \mu = 3 \) \( H_a: \mu < 3 \) ### Part 2: Type of Hypothesis Test
-
what is the p - value? (round to 4 decimal places) using a significance…
0.0300 ### Second Sub - Question (Conclusion with \(\alpha = 0.05\))
-
an online article claims that the mean time college students sleep duri…
two - tailed ### Part 2: Sample Mean (\(\bar{x}\))
-
question 3 the p - value for a hypothesis test turns out to be 0.05307.…
Reject \(H_0\)
-
the p - value for a hypothesis test turns out to be 0.09871. at a 10% l…
We have sufficient evidence for our alternative hypothesis, thus we will reject \( H_0 \)
-
you are conducting a study to see if the accuracy rate for fingerprint …
right tailed
-
using context to determine meaning hamlet: the air bites shrewdly; it i…
sharply
-
about 26% of the canadian population over 15 are first generation, that…
\( 0.74 \) (rounded to two decimal places)
-
laertes: for hamlet, and the trifling of his favour, hold it a fashion …
"a toy", "not permanent", "not lasting"
-
about 26% of the canadian population over 15 are first generation, that…
\( \mu_X = \boxed{286} \) ### Part B: Standard Deviation of \( X \)
-
in a certain large metropolitan city there are two candidates running f…
\( \mu_X = \boxed{1584} \) ### Part B: Standard Deviation of \( X \)
-
if the temperature in florida falls below 32°f there is a chance the ci…
For the binomcdf part (exact binomial, but since we are to use normal approximation later, but the normal approximation gives approximately 0.10. Wait, maybe my z - score calculat…
-
assume that a procedure yields a binomial distribution with n = 28 tria…
For the mean \(\mu\): \(11.8\) For the standard deviation \(\sigma\): \(2.61\)
-
assume that a procedure yields a binomial distribution with ( n = 28 ) …
s: - Mean (\(\mu\)): \(11.8\) - Standard Deviation (\(\sigma\)): \(2.61\) - Bell - shaped? Yes, this is bell shaped since \(np\) and \(n(1 - p)\) are both \(> 5\) (the option "Yes…
-
a drug test is accurate 98% of the time. if the test is given to 2200 p…
\( 0.352 \)
-
a drug test is accurate 98% of the time. if the test is given to 2200 p…
\( 0.352 \) (or a more precise value around this, depending on the z - table or calculator used. If we use more precise calculation of z - score and standard normal distribution, …
-
in a recent election 58% of people supported reelecting the incumbent. …
Mean: \( 858.4 \) Standard deviation: \( 18.988 \)
-
in a recent election 51% of people supported reelecting the incumbent. …
Mean: \( 740.000 \) Standard deviation: \( 19.235 \) (Note: If the proportion \( p \) was different, say if there was a value like 0.55 or others, we would use that. But since the…
-
a) if a random sample of 80 adult amer is ans is obtained, what is the …
Yes, I believe they watch less than 2.3 hours on average, because this is a very small probability (the third option: "Yes, I believe they watch less than 2.3 hours on average, be…
-
the amount of time americans spend watching television is closely monit…
The likelihood (probability) is approximately \(0.0307\) ### Part A (if we need to re - solve it for completeness, but the user's main issue was part B):
-
the reading speed of second grade students is approximately normal, wit…
s: A) \(\boxed{0.2012}\) B) \(\boxed{0.0073}\) C) \(\boxed{89}\)
-
the reading speed of second grade students is approximately normal, wit…
s: - Part A: \(0.2912\) - Part B: \(0.0073\) (the value of \(n = 20\))
-
the length of human pregnancies (gestation period) is approximately nor…
0.3859 ### Part B
-
the quality - control manager of a local fast food restaurant wishes to…
- Approximately 68%: between \(57.48\) and \(61.32\) seconds. - Approximately 95%: between \(55.56\) and \(63.24\) seconds. - Approximately 99.7%: between \(53.64\) and \(65.16\) …
-
a certain population has mean \\( \\mu = 100 \\), and standard deviatio…
# Explanation: ## Step1: Recall Sampling Distribution Properties For the sampling distribution of the sample mean \(\bar{x}\), the mean \(\mu_{\bar{x}}\) is equal to the populatio…
-
read the excerpt from \sinners in the hands of an angry god.\ there wil…
perfect
-
read the paragraph from \the wife\ by washington irving. i must confess…
apprehension
-
7 true or false 10 points the basic purpose of an acceptance speech is …
7. True 8. True 9. tell why the recipient is receiving her or his award, avoid mentioning the losers of the award competition, adapt your presentation to the main speaker
-
unit 4 test: graphs and describing distributions multiple choice 9. the…
A. \(6.38\) B. \(3.96\)
-
unit 4 test: graphs and describing distributions multipl 7. in a box an…
d. third (upper) quartile
-
unit 4 test: graphs and describing distributions mul 5. the mean and me…
D. center
-
unit 4 test: graphs and describing distributions m 10. the \left whiske…
e
-
unit 4 test: graphs and describing distributions multiple choice which …
box and whisker plot, stem and leaf plot, histogram, line graph
-
unit 4 test: graphs and describing distributions multiple choi 1. a com…
d. Yearly salary, age.
-
unit 4 test: graphs and describing distributions multiple choice which …
bar graph, pictograph, pie chart
-
unit 4 test: graphs and describing distributions multiple cl for the fo…
Min: \(5\) Q1: \(9\) Med: \(18.5\) Q3: \(25\) Max: \(36\) Left - Skewed, Symmetric or Right - Skewed? \(RS\)
-
19. an outlier will usually have a large effect on the (a) first quarti…
B. mean
-
unit 4 test: graphs and describing distributions multiple cho 6. the fi…
E. The median, the quartiles, the minimum and the maximum.
-
unit 4 test: graphs and describing distributions multiple choice determ…
Mean: $48.00$; Median: $48.00$; Distribution: $S$
-
unit 4 test: graphs and describing distributions multiple choice 13 of …
yes, because we know the total sum of all of the percents adds up to 100
-
unit 4 test: graphs and describing distribution when the mean is equal …
You have a symmetric distribution.
-
unit 4 test: graphs and describing distributions multiple choice 2. wer…
B. A quantitative variable.
-
unit 4 test: graphs and describing distributions multiple choi 18. for …
A. the mean will be larger than the median.
-
unit 4 test: graphs and describing distributions multiple choice 20. to…
A. Half - way between the \(12^{th}\) and \(13^{th}\) in the ordered list.
-
unit 4 test: graphs and describing distributions 22. a well - drawn his…
d. All of these.
-
i. introduction ii. theme a: remembering the past a. personal story abo…
B. Theme D because he focuses on this theme at the end of the speech
-
1 multiple choice 1 point a conflict theorist studying a corporation mi…
1. The ways in which the corporation’s decisions and practices benefit shareholders at the expense of workers. 2. The gap between population percentage and wealth ownership has st…
-
interpret the function ( h(x)=3^{3x + 2} ) using the properties of expo…
With a base of \(27\), the function increases in value for each \(1\) unit increase in the exponent. The expression \(3^{3x + 2}\) can be rewritten as \(9\times27^{x}\). This mean…
-
during a school fundraiser, the amount raised over 12 weeks ranged from…
The origin should begin at \((0,0)\). The \(x -\)axis can be scaled for 1 week per mark. The \(y -\)axis can be scale for \(\$100\) per line.
-
5. explain the meaning of hazel graces favourite quote from an imperial…
1. Pain is unavoidable and must be acknowledged rather than suppressed. 2. Hazel thinks Isaac’s method (crying and playing video games) is a valid way to cope with grief. 3. Augus…
-
christianity in film - the fault in our stars (2014) 1. why are the nam…
1. Hazel Grace Lancaster: - Grace: Christian unmerited divine favor, reflecting her resilience amid illness. - Augustus Waters: - Augustus: Evokes sacred dignity in mortality. - W…