Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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respondus. state university offers several sections of a business stati…
C. \(H_0:\mu_1 - \mu_2 = 0; H_1:\mu_1-\mu_2 eq0\)
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below are the marks of a test plotted in a back - to - back stem - and …
- **Mean**: - Girls: \(71.0625\) - Boys: \(\approx72.26\) - **Mode**: - Girls: \(57\) and \(89\) - Boys: \(79\) and \(84\) - **Median**: - Girls: \(68.5\) - Boys: \(73\) - **Range…
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question 17 (4 points) unusual esp subjects who defy chance when first …
Question 17: Regression toward the mean Question 18: Exposure therapy
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use the double box plot above to answer the following questions. 1) wha…
1. \(14\) 2. \(14\) 3. Walmart 4. False 5. False 6. False
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two - tail z test. test statistic = - 1.79, and \\( \\alpha = 0.01 \\).…
p - value: \(0.0734\) The correct option is B. Do not reject \(H_0\), since the p - value is greater than or equal to the significance level \(\alpha\).
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question 15 (4 points) to help mr. elberstadt overcome his addiction to…
Family therapist # Question 16
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student government members survey every 15th student who enters the sch…
C. All students of the school
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which of the following descriptions would be an example of a convenienc…
A. A person accepts the first 30 people who volunteer. C. A person accepts the first 30 people who respond to a newspaper ad.
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what does it mean to recognize your grief triggers? a. realizing that y…
C. identifying which situations and activities are likely to arouse grief
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a newspaper hires a polling company to determine the level of support i…
A. The method excludes people who do not have phones, B. The method excludes people who have unregistered numbers, C. The method excludes people without homes, D. The method exclu…
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a paired t - test was performed on the following hypothesis. $h_0:\\mu_…
\(0.02 < p\text{-value}<0.05\)
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to investigate a communitys reading habits, a magazine invites readers …
a. self - selected sampling b. Yes, because people with strong opinions about reading habits are more likely to respond, not representing the whole community.
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activity: analyze the document. learning target - i can analyze the mea…
The cartoon depicts representatives of the **Government** (a figure with the "Government" label), **Police** (the officer - like figure with the "Police" label), **Criminal Bosses…
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identify the type of study method described in the following situation …
A. Survey, the statistics can be used to make a general conclusion about the population because the sample is randomly generated, and the survey question does not introduce a bias…
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the plants in your neighbors garden are in the repeated order of lilacs…
B. The estimate is not accurate. The pattern in the plants introduces a bias in the sample, so it is not representative of the population.
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you have been assigned to test the hypothesis that the average number o…
A. Non - pooled t ### Part (b)
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the worldwide market share for a web browser was 20.3% in a recent mont…
Reject the null hypothesis. There is sufficient evidence to conclude that the market share at the university is different from the worldwide market share of \(20.3\%\). So the fir…
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a professor had students keep track of their social interactions for a …
5
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a professor had students keep ir of their social interactions for a wee…
5
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a professor had students keep track of their social interactions for a …
35
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12. - choose the correct answer - is the term for the capitalist class …
C. Bourgeoisie
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a professor had students keep track of their social interactions for a …
35
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the worldwide market share for a web browser was 20.3% in a recent mont…
B. \(H_0: p \leq 0.203\); \(H_a: p > 0.203\) ### Part 2: Calculate the test statistic (Note: The problem seems to be missing the sample data, but assuming a common scenario where,…
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a professor had students keep track of their social interactions for a …
35
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the government of a large city needs to determine whether the citys res…
Survey a random sample of persons within each neighborhood.
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determine if the statement is true or false. the degrees of freedom for…
False
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in 2000, africa had a population of approximately 800 million people. t…
To solve this, we first note the populations: Africa (1.2 billion in 2015) and North America (0.57 billion in 2015, approximated from 570 million). We calculate the ratio of Afric…
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question 22 (5 points) ✓ saved a human gene carries a certain disease f…
\( 0.118 \)
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question 20 (10 points) use bayes theorem to find the indicated probabi…
\( \approx 0.741 \) (or 74.1% when expressed as a percentage)
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question 24 (5 points) find the indicated probability. of 1003 people w…
The probability that the next person will be ineligible to give blood is approximately $\frac{288}{1003} \approx 0.287$ (or in fraction form $\frac{288}{1003}$).
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the process by which nations carry on political relations with one anot…
B. diplomacy
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question 23 (5 points) provide an appropriate response. express your an…
0.774
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#27 susanna collected information about students favorite colors. her r…
B. For every 2 students who chose green, there are 4 total students.
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a survey of 145 people asked which fruit is the best. how many people c…
40
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#27 susanna collected information about students favorite colors. her r…
For problem 27: None of the options are correct based on strict calculation (but if there is a data - reading error, maybe the intended answer is D if total is miscalculated as \(…
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question 7 1 pts which of the following two targets show results that a…
B, D # Question 8
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which term means appreciating and understanding the customers feelings …
- First question: Empathy - Second question: True
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3 multiple choice 1 point if a project is green - lit that means? refer…
It is funded and ready to head into pre - production then production.
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what does the word renaissance mean? a. new birth b. rebirth c. reconst…
B. rebirth
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question 18 (5 points) short answer. write the word or phrase that best…
\( 0.54 \)
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4. as it is explained in paragraph 10, the phrase \put her foot in it\ …
B. said something inappropriate.
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find the indicated probability. give your answer as a simplified fracti…
\(\frac{43}{87}\)
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of adults to students at the festival. the graph and table show the num…
C. 174 Adults
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directions: for the following questions, choose the best answer or resp…
A. The author does not think turkey is the best part of the Thanksgiving meal, but the work it took to prepare is a special memory of time spent with his mother. ### Question 2
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directions: for the following questions, choose the best answer or resp…
A. The author does not think turkey is the best part of the Thanksgiving meal, but the work it took to prepare is a special memory of time spent with his mother. ### Question 2
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there are six basic customer needs, one of which is control. what does …
- First question: C. A degree of power and influence over things. - Second question: C. Style coordination.
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what characteristic method of roman architecture was used to create the…
B. mathematics
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question 10 (5 points) describe the error in the stated conclusion. giv…
The error is an ecological fallacy. The conclusion incorrectly infers a correlation at the individual level (individual SAT scores and family income) from a correlation at the gro…
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finally, use the double number line to identify what percent of the par…
# Explanation: ## Step1: Find the total area The total area of the park is 4[LLM SSE On Failure]
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question 12 (7 points) construct a conditional distribution by x for th…
| | \(x1\) | \(x2\) | \(x3\) | |---|---|---|---| | \(y1\) | \(0.421\) | \(0.364\) | \(0.263\) | | \(y2\) | \(0.579\) | \(0.636\) | \(0.737\) |
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matching types of taxes introduction: match the example on the left wit…
- Tax meant to discourage the purchase of a product: Excise tax - Tax paid annually on earnings each April: Income tax - Tax paid by employees for Social Security and other progra…
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the area of rhode island is approximately 1200 square miles, and its po…
B. 800 people per square mile
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how would you describe the meaning of consonance? (1 point) when a line…
B. When several words in a short section contain the same consonant sound.
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define and distinguish among mean, median, and mode choose the correct …
- For the mean: A. The mean is the sum of all the values divided by the number of values. It can be strongly affected by outliers. - For the median: E. The median is the middle va…
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choose the best answer to the following question. explain your reasonin…
B. They represent outliers. One is much lower than most of the values, and one is much higher than most of the values.
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you want to find the median weight of 51 pumpkins. what do you need to …
E. Lay the pumpkins out in order of increasing weight and find the weight of the pumpkin in the middle. The definition of median is the middle value in a sorted data set.
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the probability that a mature hen will lay an egg on a given day is 0.8…
0.28 (Option D: 0.28)
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corey and dione both love to practice soccer in their backyards. let c …
On average, Corey and Dione make 138 goals in a typical week.
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population levels of all species ebb and flow with the changing of the …
$268$
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a 10 - item statistics quiz was given to 30 students. the table below g…
9
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the rotc program has been found on college campuses for over 60 years b…
D. Mean
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aeronautical researchers have developed three different processes to pa…
1,200 (the option: 1,200)
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decide whether the following statement makes sense (or is clearly true)…
D. The statement does not make sense because a sample must be chosen randomly to result in a sample that closely resembles the population.
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a worker at the local department of motor vehicles (dmv) claims that 60…
There is about an 8% chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60%.
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decode whether the statement below makes sense or does not make sense. …
C. The statement does not make sense. A margin of error of zero implies that there is no uncertainty in a survey result. This could happen only if the entire population was survey…
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decide whether the following statement makes sense (or is clearly true)…
A. The statement makes sense because even if a sample is chosen in the best possible way, it may not be representative of the population by random chance.
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using the dotplot, is there evidence that the proportion of times a spu…
No, a proportion of 0.68 is only 0.18 more than 0.5; therefore, there is insufficient evidence that the true proportion of heads is greater than 0.5.
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decide whether the statement below makes sense (or is clearly true) or …
B. No, the statement does not make sense. A sample is a subset of the population and cannot be larger than the population.
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a school district wanted to compare act scores between two of its schoo…
The mean score for the sample from school A is greater than the mean score for the sample from school B.
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read the e-mail. in the interest of public safety, griffin avenue shoul…
Due to the number of accidents, the writer feels that Griffin Avenue needs a traffic light.
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it can be said that a sample is representative of the population. what …
B. The results found for the sample are similar to those we would expect to find for the entire population
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the bar graph below displays students responses to the question \what c…
D. All of the above (assuming the options are labeled A - D with D being "All of the above")
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scatter plots & correlation coefficient coefficient side me correlation…
Negative
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multiple-choice question what do we call this correlation? perfect nega…
Perfect Positive
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construct a relative frequency marginal distribution for the given cont…
Row - relative frequencies: \(y1:0.286\), \(y2:0.714\) Column - relative frequencies: \(x1:0.333\), \(x2:0.405\), \(x3:0.262\)
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multiple - choice question what kind of correlation is this? negative p…
B. Positive
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question 10 (5 points) describe the error in the stated conclusion. giv…
The conclusion commits the ecological fallacy. Just because there is a correlation between average SAT scores of schools (group - level data) and average district incomes (group -…
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find the area of the shaded region. the graph depicts the standard norm…
\(0.1230\)
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question 7 (5 points) short answer. write the word or phrase that best …
A strong positive linear relationship exists between income and blood pressure in the sample. No, correlation does not imply causation. Lurking variables like age or job stress ar…
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why is there a low (weak) correlation? points are further apart. points…
Points are further apart.
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choose the correct answer. which of the following numbers may result fr…
534
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2. close reading: what do you think bolivar meant when he said spanish …
- Meaning of "seduced by freedom": Bolivar implied Spanish Americans were overly, impulsively drawn to freedom (after escaping colonial control) without grasping the responsibilit…
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what is the purpose of the randbetween function? it produces a random n…
It produces a random number between any two numbers.
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question 6 (10 points) researchers conducted a study to determine which…
- For mild cases: Treatment A proportion $\approx0.795$, Treatment B proportion $\approx0.826$ - For advanced cases: Treatment A proportion $= 0.6875$, Treatment B proportion $\ap…
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two children (two boys) that behave like (something) which (something) …
A. providing an example of the culture of teasing that is being fostered more often in schools
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the point author includes the following detail (paragraph 5) most likel…
B. support their previous point about unreliable statistics on bullying by explaining one reason systems for reporting bullying are flawed
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read the excerpt from \a day for wandering\ by clinton scollard. where …
spread a shade
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if a system of linear equations has one solution, what does this mean a…
Intersecting lines
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provide an appropriate response. the following table gives the us domes…
No, the residual plot does not suggest that the regression equation is a bad model. The residuals are randomly scattered around the zero - line, which is a characteristic of a goo…
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question 27 (5 points) answer the question. suppose you are playing a g…
B. \(22:1\)
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question 25 (5 points) express the indicated degree of likelihood as a …
Question 25: \(0\) Question 26: \(2.738\times10^{-4}\)
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1. the following table contains a sample of data collected from the dee…
1. For the domain: set \(x-\text{min}\leq9\) (e.g., \(x-\text{min}=0\)) and \(x-\text{max}\geq121\) (e.g., \(x - \text{max}=150\)). For the range: set \(y-\text{min}\leq9.3\) (e.g…
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question 21 (5 points) a dice game involves throwing three dice and bet…
\(-\$0.46\)
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question 17 (5 points) the table lists the drinking habits of a group o…
\(0.218\)
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question 16 (5 points) choose the one alternative that best completes t…
\(\frac{1}{1,221,759};\frac{100}{1,221,759}\)
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provide an appropriate response. recently, the stock market took big sw…
\(\frac{222}{1011}\) (simplified to \(\frac{74}{337}\)), \(0.220\)
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question 9 (5 points) find the value of the linear correlation coeffici…
0.863
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question 8 (1 point) determine which scatterplot shows the strongest li…
The third scatter - plot shows the strongest linear correlation.
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use the given data to find the equation of the regression line. round t…
\(\hat{y}=3.67 + 0.0313x\)
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question 3 (5 points) use the given data to find the best predicted val…
69.4