统计与概率
数据分析、概率分布、假设检验与统计方法。
-
tax data tms-sc financial math cr sem b a tax policy researcher examine…
The median is greater than the mean.
-
the five number summary of a dataset was found to be: 45, 51, 60, 65, 7…
An observation is considered an outlier if it is below: \( \boldsymbol{30} \) An observation is considered an outlier if it is above: \( \boldsymbol{86} \)
-
10. which sentence uses figurative language to convey a mood of fear or…
B. The lake weeds clutched my legs, almost dragging me down to their murky deathtrap.
-
in passage 2, what does blanc mean in the last paragraph, on pages 3–4,…
The promise of low prices is used to justify a system that destroys small businesses.
-
based on the boxplot above (with data axis labeled 5, 6, 7, 8, 9, 10, 1…
5, 7, 9, 15, 18 The Inter - Quatile Range (IQR) = 8
-
1.1 to 1.3 mastery check indicate whether the prompt requires permutati…
The number of ways is 35. The type is combinations, and the explanation is that the order of visiting the countries does not matter, so we use the combination formula \( C(n,r)=\f…
-
ths-sc financial math cr sem b tax data analyzing tax data the table pr…
\$868
-
ch 9 in a study of human development, investigators showed two differen…
the different kinds of movies.
-
ch 8 to assess the opinion of students at the ohio state university abo…
the 15 students interviewed.
-
analyzing tax data the table presents detailed tax data for 10 individu…
\$78,507
-
practice example 1 find the mean, median, and mode for each data set. 1…
Let's solve problem 1: Find the mean, median, and mode for the data set (17, 11, 8, 15, 28, 20, 10, 16). ### Step 1: Find the Mean The mean is calculated by summing all the values…
-
question 14 of 24 read the following claim: a flat tax will ensure that…
A. The flat tax is unfairly oppressive to the poor, who spend a larger percentage of their income on necessities.
-
what discovery provided the means to interpret the hieroglyphs? rosetta…
A. Rosetta Stone ### Question 9 (During which period of the Egyptian history did the Pharaohs do a lot to help the people?)
-
ch 9 a researcher studying the effect of price cuts on consumers’ expec…
A. a randomized comparative experiment
-
during which period did the pharaohs build the first pyramids? ○ lost k…
C. Old Kingdom ### Question 2 (Kind of paper)
-
table for #23 teen answers to questions about emotional health question…
B. Not able to discuss problems with a parent (assuming the options are labeled as A, B, C, D with B being "Not able to discuss problems with a parent")
-
ch 9 apparently, according to some studies, men that drive expensive sp…
D. observational studies, not experiments—lurking variables may explain the association.
-
circle graph for #22 teen strategies for coping with stress pie chart w…
B. Distraction (assuming the options are labeled with letters, but based on the given options, the correct one is Distraction with 19% which is the smallest among the given percen…
-
the following table gives projections of the population of a country fr…
# Explanation: ## Step1: Calculate the slope (m) We can use two points to find the slope. Let's take (x₁, y₁) = (0, 275.7) (since x is years after 2000, 2000 is x=0) and (x₂, y₂) …
-
question 18 1 pts ch 9 the purpose of blocking is to control the effect…
A. control the effects of an outside variable that is not of interest to the researchers.
-
ch 9* a marketing class designs two videos advertising an expensive mer…
A. results from students may not generalize to the older and richer customers who might buy a Mercedes.
-
what does the word freedom mean to you? write down one thing you are fr…
Freedom is the ability to express my opinions openly. I know because I get to speak my mind without fear of unjust punishment, as protected by laws like freedom of speech in many …
-
ch 9 a researcher studying the effect of price cuts on consumers’ expec…
C. a randomized comparative experiment ### Second Question (Salk vaccine trial, though the question part is incomplete, assuming a common question like identifying the study type)
-
ch 9* the community intervention trial for smoking cessation asked whet…
a randomized comparative experiment
-
sep 11. 1. a fair coin is flipped, and a 6-sided die is rolled. what is…
If we use the correct die probability: $\frac{1}{12}$; If we use the note's incorrect $\frac{1}{3}$: $\frac{1}{6}$ ### Problem 2:
-
a fashion store is interested in attracting new customers using differe…
the attractiveness of the sale.
-
measures of dispersion ten friends kept track of how many times they se…
\( 17 \) ### Part 2: Calculate the sample standard deviation of the data set
-
ch 9* the community intervention trial for smoking cessation asked whet…
toss a coin.
-
gianna bought a bag containing 85 small candies. she starts eating the …
The independent variable \( x \) represents the number of minutes. The dependent variable is the number of candles left, which depends on \( x \), because the number of candles le…
-
class | female | male | total 1st | 133 | 59 | 192 2nd | 94 | 25 | 119 …
\( 0.682 \) ### Part (b)
-
means which of the following? (1 pt.) a. move b. placate c. rest d. dan…
a. permeate ### Question 3
-
how does the setting of the story contribute to the story’s meaning? op…
B. They have value in providing their unique life experiences to contribute meaningfully. (Assuming the second option is labeled B; adjust identifier based on actual options, but …
-
invite 6 potential points the detectives will invite the scene of the c…
To solve this, we analyze the correct usage of "invite". The meaning of "invite" is to ask someone to go to an event, come to a place, etc. Let's check each sentence: 1. "The dete…
-
ch 9 in order to investigate treatments for morbid obesity, obese subje…
B. randomization
-
4 multiple answer 1 point how does the motif of the rocks contribute to…
D. It symbolizes the weight of grief and the desire to remain rooted in place.
-
ch 8 a group of veterinarians at a major veterinary hospital was intere…
- Discard any sequence that does not correspond to a horse ID and move to the next 4 digits. - Pick a random starting point in the table and read 4 digits. - Read 4 digits across …
-
question owen had 4 inches of snow on his lawn. it then began to snow a…
11.5
-
question luke makes $12 per hour when he babysits for his younger sibli…
72
-
name: q1 warmups 3 state the minimum, median, and maximum of the data s…
Minimum: \(\$25\), Median: \(\$130\), Maximum: \(\$380\) ### Warmup 9/9 - Problem 1
-
what is syntax? (1 point) a group of sentences set apart from other gro…
The set of grammatical rules that determine how words and phrases are arranged in a sentence.
-
ch 9 in order to investigate treatments for morbid obesity, obese subje…
the amount of weight lost five years after the study began.
-
9th 10th 11th 12th row total plays an instrument 7 3 5 9 24 does not pl…
12.5
-
select the word from paragraph 2 that comes from a latin verb meaning \…
extent
-
the bar graph summarizes the household size of a social worker’s client…
A. The mean is greater than the median.
-
ch 8 although web surveys are becoming more frequent, many of them stil…
A. non - response bias B. under - coverage bias C. volunteer response bias
-
fill in the blank with the spanish word that best completes th las flor…
jardín (Note: The original option has a typo, the correct spelling is "jardín", but among the given options "jardin" is the intended one for this context as it means "garden" wher…
-
ch 8 to assess the opinion of students at the ohio state university abo…
D. the 15 students interviewed.
-
9 there are disturbing indications that women’s role is even diminishin…
B. By comparing the economic differences in male and female professors, Mink gives an example of a larger problem.
-
aaden’s math teacher said that each question answered correctly on a te…
\( V(x) = 5x \) \( V(13) = 65 \), meaning 13 correct questions result in a score of 65.
-
fill in the blank with the spanish word that best complete mi hija tien…
C. sótano (Explanation: The sentence "Mi hija tiene su cuarto en el ______" means "My daughter has her room in the ______". Among the options: "despertador" is alarm clock, "espej…
-
what does the underlined word mean in the following s los platos están …
A. sink
-
warmup 9/11 freshman class (histogram: corn donated, number of students…
D. The freshman class has a greater range of cups donated than the sophomore class. #### Warmup 9/12
-
ch 8* archaeologists plan to examine a sample of two-meter-square plots…
B. A stratified random sampling
-
total student#=28 shoe # | student # | % 1-5 | 11 | $\frac{11}{28}=39%$…
The percentage is calculated as $\frac{11}{28} \times 100 \approx 39\%$ (for 1 - 5 shoe size range).
-
read this sentence from the passage: \this exemption has served to furt…
● obviously offensive
-
ch 8 a student asks each person in one of his classes how many hours, o…
A. convenience sampling.
-
question 7 1 pts ch 8* a state representative wants to know how voters …
the 152 voters returning the questionnaire.
-
total student#=28 shoe# | student # | % 1-5 | 11 | \\(\\frac{11}{28}=39…
Total number of students is 28.
-
an air conditioning company set a cost for a house call and charges per…
Function Meaning: The cost for the house call is 98 dollars and the cost per hour is 105 dollars. Part Impacted: The cost for the house call increases.
-
classify each of the sampling procedures below. sampling procedure - a …
Simple Random Sampling ### Second Sampling Procedure:
-
part 5: word problems using algebra score: 40/100 answered: 4/10 questi…
The equation is \(7x = 31\). The number of engines that can be fully serviced is 4.
-
for the data shown, answer the questions. round to 2 decimal places. x …
s: Sample Mean: \( 17.30 \) Median: \( 18.70 \) Sample Standard Deviation: \( 9.09 \)
-
ch 8 each month, the census bureau mails survey forms to 250,000 househ…
A. nonresponse
-
explain why judith herrin believes the fall of constantinople was a tur…
The option stating it led to voyages of discovery by Columbus because trade was blocked (the third option, depending on labeling; likely the one about Columbus and blocked trade).
-
analyze why the conquering of mecca in 630 was important for islam (1 p…
The correct option is: It solidified Islam as a faith and one backed by military support.
-
determine what the key terms refer to in the following survey. to deter…
- Sample: a. The 21 Oxnard College students who were surveyed - Parameter: c. The average number of classes of all students in Oxnard College is 2.7 - Statistic: d. The average nu…
-
the idea of sampling is to select a portion (or subset) of the target p…
b. True
-
was it a temple? another popular theory is that machu picchu was a spir…
B. There are ruins of temples and evidence of religious ceremonies.
-
ch 8* the pew research centers report entitled \how americans value pub…
The result for the entire sample is more accurate because it comes from a larger sample.
-
in a students spanish class, the final grade is based on four categorie…
78.53
-
question 1 which of the following is a qualitative variable? a. average…
D. Ethnicity
-
what does the idiom once in a blue moon mean? a something that happens …
B. Something that happens very rarely
-
question 10 the nationalities of survey respondents is considered. b. o…
a. Nominal
-
after inspecting all of 10,000 bags of vegetables stored at a food comp…
b. Parameter
-
question b a pollster uses a computer to generate 900 random numbers, t…
d. Random
-
a die is rolled 2000 times, with the following results: outcome | 1 | 2…
\(\frac{1}{6}\) (assuming the options include this; if the options are as follows (inferred from typical die probability questions): A. \(\frac{1}{6}\), B. \(\frac{1}{2}\), C. \(0…
-
a die is rolled 200 times with the following results. | outcome | 1 | 2…
C. \(\frac{2}{3}\)
-
1. what does the word \swamped\ mean in this sentence? \i’m swamped wit…
B. I'm very busy and overloaded with work.
-
the spinner above is used in a game. what is the theoretical probabilit…
d. \(\frac{3}{8}\)
-
question 6 to avoid working late, a quality control analyst simply insp…
c. Convenience
-
question 5 0.5 pts the idea of sampling is to select a portion (or subs…
a. True
-
dit added to diy diy (do-it-yourself) is everywhere these days. diy eve…
by creating a feeling that the Maker Movement is strong
-
question 4 which of the following is a quantitative variable? d. averag…
d. Average daily temperature
-
the partially filled contingency table gives the relative frequencies o…
c. 0.29
-
what we believe about identity by julia alvarez new york times one of t…
C. grumpy and difficult
-
the spinner is spun 75 times. what is the experimental probability of s…
a. 0.33
-
question 3 a discrete variable is a. one that can take on any value in …
b. One that can only take on a finite number of values
-
question 2 0.5 pts a prospective graduate student may be interested in …
a. Descriptive statistics
-
question 1 0.5 pts which of the following is a qualitative variable? d.…
c. Ethnicity
-
find the median, first quartile (q1) and the third quartile (q3) for th…
Median = \( 21.8 \) \( Q_1 = 17.1 \) \( Q_3 = 26.4 \)
-
the spinner above (with numbers 1, 2, 3, 4, 5, 6, 7, 8) is used in a ga…
b. \( \frac{1}{4} \)
-
average annual precipitation by state louisiana - 59.2 inches florida -…
State (or Name of the state) ### 2. Dependent Variable
-
students in a science class roll a model car down a ramp. they repeat t…
The standard deviation of the data will **decrease** if the Trial 1 value is removed. This is because **removing the outlier (Trial 1) reduces the spread of the data**.
-
the names of all of the states in the united states are placed in a bag…
C. \(\frac{1}{50}\)
-
identify the true and false statements about social constructs. true st…
True Statement(s): - The weekend is an example of a social construct. - Americans agree on the meaning of many social constructs.
-
students in a political science course were asked to describe their pol…
d. 0.355
-
the partially filled contingency table gives the frequencies of the dat…
d. 0.625
-
4 why does jorge find the ai’s decision to eliminate all languages exce…
C. because it means billions of people have lost their own unique languages and ways of communicating
-
what is ironic about montag letting a sleep - lozenge dissolve on his t…
The irony is that the sleep - lozenge, meant to aid sleep, is used by Montag to avoid confronting the harsh reality (like his wife's overdose and the emptiness of their lives), co…
-
what type of association is shown by the scatterplot?
Negative association (or Negative correlation)