Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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a least squares regression line was calculated to relate the length (cm…
a) Predictor variable: Length (units: cm); Response variable: Weight (units: kg) b) kg per cm c) positive; as the length of a newborn boy increases, we expect their weight to incr…
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a least squares regression line was calculated to relate the length (cm…
kg per cm
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a least squares regression line was calculated to relate the length (cm…
The predictor variable is length in units of cm and the response variable is weight in units of kg.
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a random sample of records of home sales from feb. 15 to apr. 30, 1993,…
a) C. Price (in thousands of dollars) is \(y\) and Size (in square feet) is \(x\) b) B. The slope has units of thousands of dollars per square foot
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a random sample of records of home sales from feb. 15 to apr. 30, 1993,…
C. Price (in thousands of dollars) is y and Size (in square feet) is x.
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an analysis of the amount of fiber (in grams) and the potassium content…
D. The model predicts that cereals will have approximately 25 more milligrams of potassium for every additional gram of fiber.
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a study that examined the relationship between the fuel economy (mpg) a…
A. A residual of 3 means that car drives 3 more miles per gallon of gas than the model predicts.
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a study that examined the relationship between the fuel economy (mpg) a…
In this context, to say that a certain car has a positive residual means that the **actual fuel economy (mpg)** was **higher than** the model predicts for a car with that **horsep…
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for many people, breakfast cereal is an important source of fiber in th…
B. The potassium content is actually lower than the model predicts for a cereal with that much fiber.
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analysis of the relationship between the fuel economy (mpg) and engine …
\(16.9\)
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for many people, breakfast cereal is an important source of fiber in th…
253
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17. bruce spent $30 on lunch. if he had $55 in his wallet, what percent…
$54.55\%$
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the dot plots show the distribution of the length, in centimeters, of 2…
The extinct species' teeth lengths have a more spread - out shape (wider range of values), a higher mean (longer average length), and greater variability (larger standard deviatio…
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aggressive means eady to attack\ which of the following sentences uses …
The sentence "The wasp appeared hostile and ready to sting me if I came near" uses a synonym of "aggressive".
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question 1 / 5 if someone has a risk factor for bullying, what does tha…
B. They are more likely than someone without a risk factor to perpetrate or experience bullying
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severe means \stern,\ or \serious.\ which of the following sentences us…
My parents are so strict.
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37. the table shows the results of a survey of 200 movie rental custome…
92
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dictionary entry abnormal / ab - nawr - muh / adjective 1. not normal, …
not normal
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1) reading comprehension is only important for language arts. true fals…
1. False 2. False 3. False 4. True 5. True
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the table shows the number of students in the senior class and the numb…
A. Each year, about $62\%$ of the senior class have a driver's license. B. Each year, about $38\%$ seniors do not have a driver's license.
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kristens sudden disappearance bewildered the city; the only traces that…
Confused
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cal ended the conversation abruptly; for instance, i was still speaking…
unexpectedly
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patty was known as a very feeble person. she was always in the hospital…
Sickly
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emily has such a positive demeanor: for instance, i dont think ive ever…
Attitude
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i could tell the student was being deceitful; for example, even with co…
Dishonest
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i could tell the student was being deceitful: for example, even with co…
Dishonest
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question 2 / 5 a classmate posts a picture of her artwork online and ot…
D. Write positive feedback about her artwork.
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prizes and the chances of winning in a sweepstakes are given in the tab…
(a) The expected value of the amount won by one entry is \(\$0.03409125\) (b) The new expected value is \(-\$0.30590875\)
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a sample of 100 clients of an exercise facility was selected. let x = t…
\(0.997\)
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6 multiple choice 1 point which detail from the passage best supports t…
" They kept a low profile and avoided being seen together in public."
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based on the context, what does \furtively\ most nearly mean in the fol…
A. Cautiously or secretly to avoid attention
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multiple choice 1 point which detail from the passage best supports the…
"The government claimed these areas were meant to give Black people independence and freedom."
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multiple choice 1 point based on the context, what does \ostensibly\ mo…
Supposedly or apparently
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using context clues quick check which option describes an antonym? (1 p…
a word or phrase that has an opposite meaning
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using context clues quick check which option describes a synonym? (1 po…
a word or phrase that has a similar meaning
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a student records how much money they save over time: weeks money saved…
No
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reading quiz question 4 instructions read the question carefully and se…
C. noun | a user's current situation on social media (This is incorrect. The correct answer is that in the passage, “status” refers to the granddaughter's in - between cultural si…
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for over a century americans have been making choices at sears. ge or f…
A. Being of different backgrounds is a benefit, not a burden.
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1 for over a century americans have been making choices at sears. ge or…
B. Consumerism is highly influenced by an individual's cultural background.
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select the correct text in the passage. read emily dickinsons \twas lat…
Than when the cricket came, Yet that pathetic pendulum
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the above painting is michelangelo buonarrotis, last judgement. he was …
C. understanding of theology and the Bible
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a kindergarten teacher bought $21 worth of stickers and cardstock for h…
a. The graph is a straight - line graph. Each point \((s,c)\) on the graph satisfies the equation \(1.5s + 3.5c=21\). For example, when \(s = 14,c = 0\): \(1.5\times14+3.5\times0=…
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for a curve with ( d f = 39 ), find each ( t ) - value in parts (a) thr…
\(1.304\)
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for a t - curve with df = 39, find each t - value in parts (a) through …
\(t=1.685\) (rounded to three decimal places). For the graph, option A is correct as it shows the area \(0.05\) to the right of the \(t\) - value.
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13 son cuatro los aspirantes a la presidencia del consejo estudiantil. …
E. Un mayor porcentaje de chicas votó por Scarlett.
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for a t - curve with df = 39, find each t - value in parts (a) through …
\(1.685\)
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describing a graph what statements describe this graph? check all that …
The points are scattered, The points are not connected, The graph displays a discrete graph, The graph represents the relationship between two sets of data.
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for a t - curve with df = 16, use a t - distribution table to find the …
\(1.746\)
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suppose a shipment of 160 electronic components contains 3 defective co…
\(0.0494\)
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is the group of words in bold a phrase or a clause? usually the result …
clause
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a recent census found that 52.1% of adults are female, 10.8% are divorc…
a. \(P(F) = 0.521\), \(P(D)=0.108\), \(P(F\&D)=0.063\) b. \(P(F\ or\ D)=0.566\), and \(56.6\%\) of adults are either female or divorced or both (Option D) c. The probability that …
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12 sofia está participando en un juego en el que tira un dado con los n…
### Respuesta 12 # Explicación: ## Paso 1: Probabilidad del dado El dado tiene 6 caras. La probabilidad de que caiga en 5 es \( P(\text{dado} = 5)=\frac{1}{6}\). ## Paso 2: Probab…
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a recent census found that 52.1% of adults are females, 10.8% are divor…
\(P(F\ or\ D)=0.566\) Interpretation: 56.6% of adults are either female or divorced.
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average wind speeds of cities in country a average wind speeds of citie…
The median wind speed for country B is greater than the median wind speed for country A.
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the histogram represents the distributions of essay scores for high sch…
The juniors tended to have higher essay scores than the sophomores; The interquartile range is the best comparison of the measure of variability.
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a research study was conducted to measure the time students focused on …
median
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a recent census found that 52.1% of adults are female, 10.8% are divorc…
\(P(F) = 0.521\), \(P(D)=0.108\), \(P(F\&D) = 0.063\)
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per hour quits and is replaced with a person earning $8 per hour. the g…
The mean decreases, and the median remains the same.
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an ordinary deck of playing cards has 52 cards. there are four suits - …
\( P(A) = 0.077 \)
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the dot plot represents the amount of rain recorded by rain gauges in d…
16
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the box plots show the weights, in pounds, of the dogs in two different…
# Explanation: ## Step1: Recall the property of box - plot In a box - plot, the box represents the inter - quartile range (IQR), which contains 50% (one - half) of the data. ## St…
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suppose the data below represent, in thousands, the type of health insu…
No
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one - half of the dogs in each shelter are between which weights? betwe…
# Explanation: ## Step1: Recall the property of box - plots In a box - plot, the box represents the inter - quartile range (IQR), which contains 50% (one - half) of the data. ## S…
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violet creates two spinners for a game. each spinner is spun once, and …
The mean is the same as the median.
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jillian and dawn are playing a game of miniature golf. in this game, th…
Jillian won the game because the person with the lower mean took fewer putts on average for each hole.
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the box plots show the average speeds, in miles per hour, for the race …
The speeds in race A are likely to be near 153 mph and the speeds in race B are likely to be near to 145 mph.
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the number of text messages that reza sent each day so far in this bill…
The data is skewed and shows that he typically sent about 6 to 8 text messages per day.
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means and mean absolute deviations of rainfall last week and this week …
\(\frac{0.8}{0.5}\) (corresponds to the third option in the multiple - choice list)
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alejandro wants to determine the average shoe size of all of the male s…
B. every member of the boys' basketball team
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suppose a shipment of 130 electronic components contains 3 defective co…
\(0.0572\)
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means and mean absolute deviations of sidneys and phils grades sidney p…
\(\frac{4}{3.28}\) (corresponding to the second option in the multiple - choice list)
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how many different simple random samples of size 4 can be obtained from…
\(123410\)
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the dot plot shows the number of words students spelled correctly on a …
The graph is nearly symmetrical.
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average monthly electric cost how could the graph be redrawn so that th…
The scale on the \(y -\)axis could be changed to \(0 - 150\).
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the box plots show theos math scores and language arts scores. math lan…
60 to 85 for math; 60 to 80 for language arts
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points scored per game number of points how can the graph be adjusted t…
The intervals on the x - axis can be changed to be continuous and consistent.
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two months ago, the mean daily rainfall in a local city was 9.4 cm. the…
Last month, the amount of rain that fell each day varied less than the month before.
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the box plots show the data distributions for the number of text messag…
\(2\)
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nico wanted to determine the number of students in his school who buy s…
observational study
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4.2.ps - 9 car survey in a survey of 1,600 people who owned a certain t…
$50$
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the median boiling temperature of the tap water is 100°c. the median bo…
The mean of the tap water boiling temperatures is about \(2^{\circ}\) less than the mean of the saltwater boiling temperatures.
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3. niko drinks his shake at a constant rate. after drinking the shake f…
b. The equation is \(s=-\frac{7}{3}t + 21\) c. The \(y\) - intercept is \((0,21)\), which means that initially (at \(t = 0\) minutes), there are \(21\) ounces of shake in the cup.…
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assume that different groups of couples use a particular method of gend…
$4.8$
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drag and drop options on the right - hand side and submit. for keyboard…
"An argument is like a building..." = Reasoning by analogy "Someone you know starts to withdraw..." = Reasoning by sign "I have owned three used automobiles..." = Reasoning by exa…
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the box plots show the weights, in pounds, of the dogs in two different…
The range in shelter A is 22, and the range in shelter B is 18.
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kira looked through online census information to determine the average …
Kira used published data that is quantitative.
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read the excerpt from enriques journey. moreover, the mara salvatrucha …
C. It indicates that the gangsters are looking for vulnerable people. E. It supports the idea that the gangsters are involved in criminal activities.
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based on a poll, among adults who regret getting tattoos, 18% say that …
\(0.3040\)
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what is the mean of this set {2, 6, 7, 9, 9, 9}? 6 7 8 9
7
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julian and nina are playing a game. their scores for five games are sho…
The medians differ by 3, but the ranges differ by 10.
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mrs. gonzalezs class four students compared the data in the box plots. …
Tahara
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the revenue for a particular companys parks and resorts, y (in millions…
a. The y - intercept is the ordered pair \((0,6540)\). b. In 2003, the revenue for the parks and resorts was about \(\$6540\) million (Option D).
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assume that a procedure yields a binomial distribution with ( n = 8 ) t…
\(0.136\)
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suppose the data below represent, in thousands, the type of health insu…
\(P(<18\ years\ old)\approx0.416\), \(P(<18\ years\ old|no\ health\ insurance)\approx0.192\)
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sam kept track of the number of problems he was assigned for his math h…
The data is skewed and shows that half of the assignments contained 15 problems or fewer.
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assume that random guesses are made for 3 multiple - choice questions o…
\(0.512\)
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steve determined the number of states each of his friends has visited. …
The data is skewed right and shows that half of Steve's friends have visited 10 to 40 states.
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which measure of center is shown in a box plot? mean median mode range
median
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remember, vosotros and ustedes both mean \yall, you guys, you people, y…
USTEDES is "you all" in general, and VOSOTROS is "you all" when speaking especially respectfully or politely.
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assume that when human resource managers are randomly selected, 36% say…
\(0.0479\)