Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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a countrys tax collection agency reported that 92% of individual tax re…
This sample provides evidence that this proportion has changed since 2017, since the 2017 proportion of \(0.92\) is not within the 90% confidence interval \((0.822, 0.902)\) found…
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you spin the spinner once. what is p(6)? write your answer as a percent…
25
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a countrys tax collection agency reported that 92% of individual tax re…
The margin of error is \(0.040\)
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a countrys tax collection agency reported that 92% of individual tax re…
The confidence interval has a lower limit of $0.822$ and an upper limit of $0.902$.
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a countrys education department reported that in 2015, 68.9% of student…
This sample provides evidence that this proportion has changed since 2015, since the 2015 proportion (\(0.689\)) is not within the 2017 confidence interval (\(0.510\) to \(0.656\)…
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a countrys education department reported that in 2015, 68.9% of student…
The margin of error is \(0.073\)
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a countrys education department reported that in 2015, 68.0% of student…
The confidence interval has a lower limit of $0.510$ and an upper limit of $0.656$.
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a spinner has 12 equal sections, of which 6 are green. if you spin the …
\( \frac{1}{2} \)
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a bowl contains 14 beads, of which 4 are brown. what is the probability…
\(\frac{2}{7}\)
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which statement is true? the indian appropriations act of 1889 meant th…
The Indian Appropriations Act of 1871 meant that tribes were no longer classified as independent nations.
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gabe meets with his boss at the end of a busy day at work. he notices t…
Asking a person as a way to check an interpretation of his or her nonverbal message
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l8 - practice test score: 95/100 answered: 19/20 question 20 laura is b…
179
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l8 - practice test score: 90/100 answered: 18/20 question 19 find the m…
\(97\)
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99. nebuliz/er literally means: one who causes a cure one who causes an…
99. one who causes a mist 100. to draw or pull
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l8 - practice test score: 85/100 answered: 17/20 question 18 the plot a…
10
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question 17 sadie categorized her spending for this month into four cat…
\(\$440\)
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refers to the status that a person obtains by choice. achieved status a…
Question 29: Achieved status Question 30: The owners of means of production in a society.
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l8 - practice test score: 75/100 answered: 15/20 question 16 the plot a…
\(12\)
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question 15 catori categorized her spending for this month into four ca…
\(529\)
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select the correct answer. gloria needs to show in spreadsheet form the…
A. bar graph
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laura is bowling 5 games. her first 4 scores were 108, 126, 91, and 92.…
98
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l8 - practice test score: 60/100 answered: 12/20 question 13 find the r…
\(97\)
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l8 - practice test score: 55/100 answered: 11/20 question 12 find the m…
\(49\)
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l8 - practice test score: 50/100 answered: 10/20 question 11 find the m…
$52.27$
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l8 - practice test score: 45/100 answered: 9/20 question 10 find the mo…
92
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l8 - practice test score: 40/100 answered: 8/20 question 9 find the mod…
\(22\)
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question 8 find the weighted mean. round your answer to the nearest ten…
\(13.1\)
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question 7 the table below shows a students quiz scores on six quizzes.…
\(14.5\)
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score: 25/100 answered: 5/20 question 6 the table below shows a student…
\(16.75\)
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l8 - practice test score: 20/100 answered: 4/20 question 5 a frisbee - …
8
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score on last try: 0 of 5 pts. see details for more. > next question yo…
\(15\)
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for a school project, andi is researching cultures that eat bugs. they …
First question: Ethnocentrism Second question: Media
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savannah is the costume manager for a large theater company. she has 10…
\(\frac{1}{5}\)
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of the 8 people attending a seminar, 4 have blond hair. what is the pro…
\( \frac{1}{2} \)
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the two scatter plots below show the same data set. choose the scatter …
El primer diagrama de dispersión (el que está en la parte superior de la imagen) es el que destaca el valor atípico.
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the two scatter plots below show the same data set. choose the scatter …
El primer diagrama de dispersión es el que muestra el valor atípico.
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for the set of points to the right, determine whether an exponential fu…
C. linear function
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the two scatter plots below show the same data set. choose the scatter …
El primer diagrama de dispersión (el que está en la parte superior de la imagen) es el que muestra el valor atípico resaltado.
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the two scatter plots below show the same data set. choose the scatter …
El primer diagrama de dispersión (el que está en la parte superior de la imagen) es el que destaca el valor atípico.
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the two scatter plots below show the same data set. choose the scatter …
El primer diagrama de dispersión (el que está en la parte superior de la imagen) es el que resalta el valor atípico.
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the bar graph on the right shows the average cost of room and board at …
A. The exponential model is better.
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this scatter plot shows the ages of some students and how many books th…
14
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for the data set shown by the table, a. create a scatter plot for the d…
a. Plot the points \((2013,26)\), \((2014,31)\), \((2015,40)\), \((2016,55)\), \((2017,80)\), \((2018,110)\) on a scatter - plot (with \(x\) - axis as year and \(y\) - axis as num…
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read the speech excerpt below and answer the question. looking for ways…
C. questions
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a patient is not allowed to have more than 376 milligrams of cholestero…
A. The point can be \((1,1)\). The point \((1,1)\) means that a patient had \(1\) egg and \(1\) ounce of meat during a day. This is within a diet of eggs and meat.
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yesterday, raymond and his friends played a video game after soccer pra…
80
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darell plays an online multiplayer video game. he played 10 times last …
4
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this scatter plot shows how many tickets and how many buckets of popcor…
\( 1900 \)
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noras family makes a game out of counting billboards during long car ri…
3
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the following table shows mean annual earnings for women and men by the…
\(1667840\)
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vijays pottery class made bowls for a fundraiser to fight hunger. this …
190
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creek city school had a reading contest last month. this scatter plot s…
3
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slumber world mattress store also sells electric blankets. this scatter…
15
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the following table shows mean annual earnings for women and men by the…
$1667840$
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percy works at the snack stand during school football games. this scatt…
20
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for the following situation, find the average monthly expense that you …
\(737\)
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hansens family held a yard sale last summer. this scatter plot shows th…
41
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the total yearly amount of child support due (in billions of dollars) i…
\(D(0) = 4.621\), \(D(4)=8.317\), \(D(8)=12.013\) For part (b):
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what does the index value of 182.1 in 2010 mean? explain your reasoning…
D. Gas in 2010 cost 182.1 times as much as gas in 2000, because the ratio of the gas price index in 2010 to the gas price index in 2000 is 182.1.
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the function defined by ( d(x) = 4.4x^{2}+32.6x + 1987 ) approximates t…
\(D(0)=1987\) means that \(0\) year(s) since the study began, the annual dormitory charge was \(\$1987\). \(D(10)=2753\) means that \(10\) year(s) since the study began, the annua…
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find the indicated probabilities using the geometric distribution, the …
(a) \(0.216\) (b) \(0.9\) (c) \(0.100\) D. None of the events are unusual.
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this scatter plot shows the number of adult tickets and the number of c…
850
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a recent survey found that 70% of all adults over 50 wear glasses for d…
B. \(0.850\)
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assume that male and female births are equally likely and that the birt…
A. \(0.205\)
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in which of the following situations is the probability calculated empi…
A study done by a toy company reveals that 75 out of 100 toddlers prefer a teddy bear over an action figure, so the estimated probability of a random toddler choosing a teddy bear…
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according to government data, the probability that a woman between the …
A. mean: 4; standard deviation: 1.55
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the random variable x represents the number of cars per household in a …
A. \(0.792\)
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the random variable x represents the number of boys in a family of thre…
A. mean: 1.50; standard deviation: 0.87
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the random variable x represents the number of boys in a family of thre…
A. mean: \(1.50\); standard deviation: \(0.87\)
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the random variable x represents the number of boys in a family of thre…
A. mean: 1.50; standard deviation: 0.87
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state whether the variable is discrete or continuous. the temperature i…
continuous
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brennans basketball team played in the championship last night. this sc…
62
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bayside pool offers free admission on sundays. this scatter plot shows …
60
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the average score for games played in the nfl is 22.1 and the standard …
a. \(\overline{x}\sim N(22.1,\frac{9.3}{\sqrt{6}})\approx N(22.1,3.7970)\) b. \(\sum x\sim N(132.6,22.77)\) c. \(P(\overline{x}>23.105)\approx0.3955\) d. The 67th percentile for t…
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question 13 of 20 which of the following sentences means \they are goin…
A. Ellos van a la tienda.
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e) experimento 5: en una bolsa hay granos rojos y granos anaranjados. e…
Independiente
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the amount of pollutants that are found in waterways near large cities …
a. \(X\sim N(9.9,1.4^{2})\) b. \(\bar{X}\sim N(9.9,0.4427^{2})\) c. \(0.4713\) d. \(0.4110\) e. Yes f. \(Q1 = 9.6013\) ppm, \(Q3 = 10.1987\) ppm, \(IQR = 0.5974\) ppm
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(c) experimento 3: giran dos veces una ruleta con secciones numeradas d…
plicación breve: Para determinar si dos sucesos son independientes, se verifica si la ocurrencia de uno no afecta la probabilidad del otro. En el caso del experimento 3, girar la …
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(a) experimento 1: en una caja hay boletos con letras de la a a la z. e…
# Explicación breve: Para determinar si dos sucesos son independientes o dependientes, se debe verificar si el resultado de uno de ellos afecta la probabilidad del otro. En ambos …
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independiente dependiente (e) experimento 5: en una camada de cachorros…
Dependiente
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(c) experimento 3: una familia tiene dos hijos. suceso a: el hijo mayor…
(c) Dependiente (d) Independiente
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(a) experimento 1: en una baraja hay 10 naipes numerados del 1 al 10. e…
# Explicación breve: Para determinar si dos sucesos son independientes o dependientes, se debe verificar si la ocurrencia de uno de ellos afecta la probabilidad de ocurrencia del …
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(e) experimento 5: al comienzo de cada uno de dos partidos de fútbol, l…
Independiente
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(c) experimento 3: en un sombrero hay pedacitos de papel con los nombre…
- (c) Independiente - (d) Dependiente
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(a) experimento 1: en una camada de cachorros hay cachorros negros y ca…
# Explicación breve: - **(a)** En el Experimento 1, al sacar el primer cachorro (suceso A), el número total de cachorros y la cantidad de cachorros blancos cambian. Esto afecta la…
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the amount of syrup that people put on their pancakes is normally distr…
# Ex[SSE Completed, Client Connection Error][SSE onError error]
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read this passage: in 2015, attackers targeted six locations throughout…
C. Was the number of people killed and injured very large?
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question 39 of 40 rosa recorded the height (in centimeters) of a pea pl…
B. \(y = 0.5x+1.8\)
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question 38 of 40 there is a strong positive linear correlation between…
D. No. Any number of factors could also affect the height of the bean plants.
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question 37 of 40 which of the following r - values represents the stro…
A. \(-0.81\)
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question 36 of 40 at a high school, 9th and 10th graders were asked whe…
C. \(39\%\)
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question 35 of 40 in a survey at a shoe store, 200 customers were asked…
B. 46%
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question 34 of 40 these dot plots show hourly earnings for a sample of …
B. Centers: Career A has greater median hourly earnings than career B. D. Spreads: The hourly earnings for career A are more spread out.
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question 33 of 40 these box plots show shark attack data for the years …
A. The interquartile range (IQR) for Florida, 11, is greater than the IQR for Australia, 4.
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question 32 of 40 the applicants for a soccer coaching position were as…
D.
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question 31 of 40 jon, leroy, and simon are having a free - throw shoot…
B. Leroy
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figures of speech quick check what is the definition of oxymoron? (1 po…
a figure of speech where words with opposite or conflicting meanings are placed next to each other
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question 24 of 25 a set of data points has a line of best fit of ( y = …
C. \(0.3\)
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question 23 of 25 which graph has a correlation coefficient r closest t…
B. Graph B
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14.4.2 test (cst): data and mathematical modeling which of the followin…
C.