Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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one day, the baker saw a \bread contest\ sign. \i can win this!\ he sai…
to get rid of something
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the blundering baker a clumsy baker owned a bakery. he often dropped hi…
The clue "often dropped" and "smash into tiny pieces" helps understand what "delicate" means.
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which of the following regressions represents the strongest negative li…
Regression 4 (with \( y = ax + b \), \( a = -5.2 \), \( b = -15.2 \), \( r = -0.7049 \)) represents the strongest negative linear relationship between \( x \) and \( y \).
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the figure illustrates a normal distribution for the prices paid for a …
\(81.5\%\)
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what is the equation of the trend line in the scatter plot? use the two…
\(y = \frac{2}{5}x + 2\)
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state if there appears to be a positive correlation, negative correlati…
Negative correlation.
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a bag of trail mix contains 22 peanuts, 14 almonds, and 9 chocolate chi…
\(0.31\)
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find the indicated z score. the graph depicts the standard normal distr…
\(1.71\)
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match the correlation coefficients with the scatterplots shown below. s…
Scatterplot A: \(r=-0.72\); Scatterplot B: \(r = 0.65\); Scatterplot C: \(r=-0.02\); Scatterplot D: \(r = 0.84\)
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read \one generation passeth away and another cometh\ and \pilgrimage.\…
Both address the search for meaning by demonstrating that being remembered gives life purpose.
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question determine the type of correlation represented in the scatter p…
a strong negative correlation
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the scatter plot and line of best fit below show the length of 8 people…
An expected height of 170 centimeters when the femur has a length of 45.9 centimeters.
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read the passage from animal farm. \boxer!\ cried clover in a terrible …
A. It is important to recognize a dictatorship before it is too late.
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fill in the blank so that the resulting statement is true. the measure …
median
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the scatter plot and line of best fit below show the length of 14 peopl…
\(219\)
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determine the type of correlation represented in the scatter plot below…
Strong positive correlation
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x is a normally distributed random variable with mean 27 and standard d…
0.796
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a random sample of 40 college professors is selected from all professor…
C. The greatest number of college professors are in their 40s
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a professor had students keep track of their social interactions for a …
21
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assume that a simple random sample has been selected from a normally di…
D. There is not strong evidence that the mean is less than 1000 hic, and one of the booster seats has a measurement that is greater than 1000 hic.
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use the given information to find the p - value. also, use a 0.05 signi…
C. \(0.0512\); fail to reject the null hypothesis
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a spinner is divided into five colored sections that are not of equal s…
$13\%$
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the data sets give the number of platinum albums for the five male arti…
To solve this, we need the actual data sets for the number of platinum albums for male and female artists. Since the data is not provided in the question, we can't calculate the s…
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compute the mean, range, and standard deviation for the data items in e…
### Sample C: Mean, Range, Standard Deviation Calculation #### Mean Calculation ## Step 1: Sum the data values Data for Sample C: \( 28, 28, 28, 28, 40, 52, 52, 52 \) Sum \( = 28 …
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find the standard deviation for the group of data items. 5, 6, 7, 7, 8,…
\(1.29\)
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find a. the mean; b. the deviation from the mean for each data item; an…
The mean is \(\boldsymbol{165}\) ### Part b: Deviation Calculation (Deviation = Data Item - Mean)
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a data set about speed dating includes \like\ ratings of male dates mad…
- Null and alternative hypotheses: \(H_0:\mu = 8.00\), \(H_1:\mu<8.00\) (Option D) - Test statistic: \(t\approx - 0.864\) - \(P\) - value: Approximately \(0.194\) - Conclusion: Fa…
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cultural formations of the muslim people islam with 1.8 billion worship…
Sunni and Shiite
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the scatter plot and line of best fit below show the length of 11 peopl…
The \(x\) - value on the line when \(y = 150\) represents the predicted femur length (in centimeters) for a person with a height of 150 centimeters, according to the linear relati…
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a transit company operates commuter trains to help people get to the ci…
\(1\)
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the box - and - whisker plot below represents some data set. what perce…
50%
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assume that 2 cards are drawn from a standard 52 - card deck. find the …
a. \(\frac{25}{102}\) b. \(\frac{1}{4}\)
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match each correlation coefficient to the appropriate scatter plot. $r …
\(r = 0.1\) matches the scatter - plot with more scattered points (the right - hand side scatter - plot in the given image), and \(r = 0.6\) matches the scatter - plot with a some…
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multiple select question select all that apply identify the true statem…
1. The committee sends a written report to Congress, explaining the changes to the bill and why the full Congress should or should not pass the bill. 2. When all changes to a bill…
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if a system of linear equations has one solution, what does this mean a…
Intersecting lines
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in a class of students, the following data table summarizes how many st…
\(\frac{3}{20}\)
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match each correlation coefficient to the appropriate scatter plot. the…
Left - hand scatter - plot: \(r=-0.5\); Right - hand scatter - plot: \(r = 1\)
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determine the type of correlation represented in the scatter plot below…
no correlation
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describe the correlation in the scatter plot below. answer attempt 1 ou…
The scatter plot shows no correlation because as the plotted values of \(x\) increase, the values of \(y\) generally have no consistent pattern.
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use the least squares regression line of this data set to predict a val…
\(144\)
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a car company says that the mean gas mileage for its luxury sedan is at…
The sampling distribution: Use a \(t -\)sampling distribution because the population is normal and \(\sigma\) is unknown. The hypotheses: \(H_0:\mu\geq23\), \(H_a:\mu < 23\) The s…
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a consumer group claims that the mean minimum time it takes for a sedan…
The standardized test statistic \( t\approx1.73\) and the \( P \)-value \( P\approx0.049\)
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a credit card company claims that the mean credit card debt for individ…
\(t\approx1.69\)
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test the claim about the population mean μ at the level of significance…
A. Fail to reject \(H_0\). There is not enough evidence at the \(1\%\) level of significance to reject the claim.
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an online travel agent that specializes in cruises wanted to compare th…
C. Pooled t ### Part b
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twelve different video games showing alcohol use were observed. the dur…
C. No. The sample size is not greater than 30, the sample does not appear to be from a normally distributed population, and there is not enough information given to determine whet…
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formulate the indicated conclusion in nontechnical terms. be sure to ad…
C. There is sufficient evidence to support the claim that the mean is greater than 32 miles per gallon.
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choose the answer that means the same as the word flashed. think carefu…
E. coat
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determine the type of correlation represented in the scatter plot below…
a weak positive correlation
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match each correlation coefficient to the appropriate scatter plot. the…
The scatter - plot with all points on a straight - line (left one) has \(r = 1\), and the scatter - plot with points scattered around a line with a negative slope (right one) has …
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5. what does it mean to paraphrase? to sum up the meaning of a passage …
to restate a passage so it means the same thing but in your words
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what does each number mean in this context? a negative number means the…
made
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what does each number mean in this context? a negative number means the…
sold
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2.2.2 quiz: postwar years and the global depression question 8 of 10 wh…
A. Americans invested and spent beyond their means by taking out large loans.
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2. match the economic term to its meaning: 1. inflation targeting 2. li…
1. a. Fed policy to keep inflation near a set rate 2. c. When interest rates can't fall further to stimulate economy 3. b. Banks keep part of deposits, lend the rest
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lastly there is merit - based justice which means justice is distribute…
The correct option is: the first option (the one with the text "justice is distributed unequally dependent on what each person deserves (based on what you have done)")
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multiple - choice question justice as equality means everyone gets some…
B. Everyone gets the same kind & amount of stuff (assuming the options are labeled A, B, C with A being "Everyone gets something but it might not be the same", B being "Everyone g…
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x² = 14.24 and x²cv = 9.49. what is your conclusion? signicant, fail to…
Significant, Reject the Null Hypothesis.
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$x^{2}=6$ and $x^{2}cv = 5.99$. what is your conclusion? signicant, fai…
Significant, Reject the Null Hypothesis.
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$\\chi^{2}=9.49$ and $\\chi^{2}cv = 9.49$. what is your conclusion? not…
Significant, Reject the Null Hypothesis.
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question 18 (1 point) read the following passage from chapter 3: by sev…
c. meaningless and excessive
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x² = 1.24 and x²cv = 5.99. what is your conclusion? signicant, fail to …
Not Signicant, Fail to Reject the Null Hypothesis.
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x² = 7.8 and x²cv = 7.81. what is your conclusion? signicant, fail to r…
Not Significant, Fail to Reject the Null Hypothesis.
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he area of new mexico is approximately 100,000 square miles, and its po…
20 people per square mile
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the following sentences contain blanks. use the drop - down menus to co…
First blank: movement Second blank: emigration Third blank: immigration Fourth blank: seasonal migration
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write a biography, but not about a person! write a 2 - 3 paragraph biog…
*Biography of "To Kill a Mockingbird"* "To Kill a Mockingbird" was "born" in 1960. Its "parent" was Harper Lee. The "narrator" is Scout Finch, a young girl growing up in the racia…
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sample response: because i chose to make cuts to education, this could …
a. a description of the three largest cuts I made
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5. brandons furniture store buys a sofa at wholesale, but marks it up b…
The wholesale price of the sofa is \(\$97\)
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3 ss.912.a.1.2, ss.912.a.3.6 (high) select the belief or philosophy thi…
B. Social Darwinism ### Question 4
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a line of best fit was drawn to the plotted points in a data set below.…
20
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the scatter plot and line of best fit below show the length of 12 peopl…
224
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le tableau ci-dessous présente les réponses à la question : « pensez-vo…
a. La tranche d'âge « De 12 à 18 ans » a le plus haut pourcentage de réponses « oui » ($80\%$). b. $72.5\%$ des personnes interrogées ont répondu « oui ».
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question laraughn decides to research the relationship between the leng…
The predicted length of the catfish that weighs 32 pounds is 24 inches.
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larvaughn decides to research the relationship between the length in in…
48
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the scatter plot and line of best fit below show the length of 10 peopl…
183
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the scatter plot and line of best fit below show the length of 14 peopl…
214
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a line of best fit was drawn to the plotted points in a data set below.…
12
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the scatter plot and line of best fit below show the length of 14 peopl…
\(163\)
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a researcher studied the relationship between the number of times a cer…
The number of times the cricket could be expected to chirp if it’s \( 95^\circ F \).
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read the excerpt from hidden figures. their path to advancement might l…
She leaves out important ideas from the original text.
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read the excerpt from hidden figures. their path to advancement might l…
She leaves out important ideas from the original text.
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read the excerpt from hidden figures. shetterly describes how katherine…
She uses too many exact phrases from the original text.
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a fruit basket contains 8 apples, 4 oranges, and 18 peaches. find the t…
\(0.27\)
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a traditional die with six sides numbered 1 to 6 is rolled. find the th…
\( 0.17 \)
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a bucket contains 18 baseballs, 13 softballs, and 9 tennis balls. find …
\(0.33\)
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bucket contains 18 baseballs, 13 balls, and 9 tennis balls. find the et…
\(0.33\)
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determine whether the domain is discrete or continuous. the domain is d…
The domain is discrete because it consists of distinct, separate values (countable, like whole - number values).
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question 19 what is the developmental task of erik eriksons eighth stag…
B. integrity vs. despair
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as of 2011, the following are the ages at which a countrys presidents w…
7
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as of 2011, the following are the ages at which a countrys presidents w…
10
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ed sheeran one direction 8 5 4 1 0 1 2 6 6 9 5 4 3 1 1 1 0 2 5 8 8 9 5 …
Ed Sheeran did better. Justification: Ed Sheeran has a higher mean (indicating on - average better chart performance if lower values are better in the chart context), a lower medi…
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as of 2011, the following are the ages at which a countrys presidents w…
# Explanation: ## Step1: Identify the class width The first class is 41 - 45, so the class width is \( 45 - 41 + 1 = 5 \) (assuming inclusive classes). The subsequent classes will…
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the data in the table show the average retirement ages for a random sam…
### Part a: Calculating the Test Statistic We are dealing with a two - sample z - test for the difference in population means (since the population standard deviations are known).…
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belied cargo plane but a needle - nosed single - pilot jet. jonas, look…
It creates a sense of uncertainty and fear.
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that it was really true. here today and gone tomorrow. never seen again…
precisely and carefully
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for three years before they could apply for children, had always been a…
The citizens are not allowed to make many big life decisions on their own.
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you are investigating the number of computers in each household in a ci…
- Populations: C. the number of computers in all households in the city - Samples: A. the number of computers in one household in the city, B. the number of computers in every oth…
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the data to the right show the average retirement ages for a random sam…
D. \( H_0: \mu_1 - \mu_2 \geq 0 \), \( H_1: \mu_1 - \mu_2 < 0 \) ### Part b: Calculating the Test Statistic
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you are investigating the number of computers in each household in a ci…
C. the number of computers in all households in the city
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in a survey, 30% of the respondents stated that they talk to their pets…
\( H_0: p = 0.3 \) \( H_1: p < 0.3 \)