统计与概率
数据分析、概率分布、假设检验与统计方法。
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what is the meaning of the underlined word? un corredor largo con un mo…
A. bunch
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which kind of harmony did classical period composers prefer? ○ tonic-do…
tonic - dominant - tonic (I - V - I)
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prepare describe the relationship, if there is one, between the number …
There is no linear relationship between the number of hours spent in a bookstore and the amount of money spent.
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guided practice the oven-bird by robert frost there is a singer everyon…
1. For the first dropdown: "will not be stated directly" 2. For the line selection: "He says that leaves are old and that for flowers" and "Mid - summer is to spring as one to ten"
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complete the table. write your answers as whole numbers or decimals rou…
Glenbrook Mean: \(3.8\), Glenbrook Mean absolute deviation: \(2.4\)
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the number of chocolate chips in an 18 - ounce bag of chips ahoy! choco…
\(1194\)
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the box plots show race times for a sample of 10 runners who ran in the…
| Road race | Shoreside race | |--|--| | Median: \(26\), IQR: \(12\) | Median: \(36\), IQR: \(6\) |
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the number of chocolate chips in an 18 - ounce bag of chips ahoy! choco…
\(1194\)
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the mean incubation time of fertilized eggs is 19 days. suppose the inc…
The incubation times that make up the middle 97% of fertilized eggs are \(17\) to \(21\) days.
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the mean incubation time of fertilized eggs is 19 days. suppose the inc…
\(18\)
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the sales manager at prize motors tracked truck and suv sales at the ca…
The mean of trucks is $29$, and the mean absolute deviation of SUVs is approximately $5.1$.
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adam works at the gray empire parking garage. on saturday, he recorded …
Sunday's median: \(2\); Saturday's inter - quartile range: \(2\)
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complete the paragraph. the interquartile range for the snowfalls in gr…
The interquartile range for the snowfalls in Grandmont is less than the interquartile range for the snowfalls in Northcrest. So, if the samples are representative, the interquarti…
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the box plots show the amount of snow in the towns of northcrest and gr…
| Grandmont | Northcrest | |--|--| | \(10\) | \(22\) | | \(4\) | \(4\) |
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assume the random variable ( x ) is normally distributed with mean ( mu…
\(55.18\)
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find the value of $z_{\\alpha}$. $\\alpha = 0.34$ the value of $z_{0.34…
\(0.41\)
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prime pizza shop allows customers to place delivery and takeout orders.…
The mean of takeout orders is $51$ and the mean absolute deviation of takeout orders is approximately $3.7$
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find the value of $z_{\\alpha}$. $z_{0.28}$ $z_{0.28}=\\square$ (round …
\( 0.58 \)
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find the value of ( z_{alpha} ). ( z_{0.39} ) ( z_{0.39}=square ) (roun…
\(z_{0.39}=0.28\)
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find the value of ( z_{alpha} ). ( z_{0.39} ) ( z_{0.39}=square ) (roun…
\(z_{0.39}=0.28\)
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emma works at harvest hollow farm. she recorded the number of berries i…
Blackberries median: \(18\); Raspberries inter - quartile range: \(5\)
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find the z - scores that separate the middle 48% of the distribution fr…
\(- 0.64,0.64\)
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find the z - score such that the area under the standard normal curve t…
\(1.23\)
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find the z - score such that the area under the standard normal curve t…
\(-0.20\)
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find the z - score such that the area under the standard normal curve t…
\(0.67\)
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the lengths of a particular animals pregnancies are approximately norma…
The probability of a "very preterm" baby is \(0.0062\). This event would be unusual because the probability is less than \(0.05\).
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the lengths of a particular animals pregnancies are approximately norma…
The probability of a "very preterm" baby is \(0.0062\). This event is unusual because the probability is less than \(0.05\).
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the lengths of a particular animals pregnancies are approximately norma…
\(0.1056\)
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the lengths of a particular animals pregnancies are approximately norma…
\(0.3830\)
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the lengths of a particular animals pregnancies are approximately norma…
\(0.1056\)
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the ability to determine the age of some individuals can be difficult i…
This event is unusual, because the probability is equal to \(0.0281\), which is less than \(0.05\).
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the ability to determine the age of some individuals can be difficult i…
\(0.0322\)
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the ability to determine the age of some individuals can be difficult i…
\(0.0384\)
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the ability to determine the age of some individuals can be difficult i…
\(0.3300\)
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the number of chocolate chips in an 18 - ounce bag of chocolate chip co…
\(0.6564\)
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the number of chocolate chips in an 18 - ounce bag of chocolate chip co…
\(0.7559\)
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assume the random variable ( x ) is normally distributed with mean ( mu…
\(0.9662\)
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assume the random variable x is normally distributed with mean μ = 50 a…
\(0.8303\)
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what did reconstructions end mean for workers and reformers later on?
The end of Reconstruction meant a more challenging environment for workers (especially African - American workers facing economic discrimination) and reformers (who had to combat …
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assume the random variable x is normally distributed with mean μ = 50 a…
The probability \(P(X>40)\approx0.9236\). The correct normal curve is the one where the area to the right of \(x = 40\) (including the part from \(x = 40\) to \(x = 50\) and \(x=5…
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read the passage from a room of ones own. to have lived a free life in …
The negative connotations of the words emphasize the author's feeling that societal norms damage women artists in severe and lasting ways.
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read the excerpt from act 3 of a dolls house. krogstad with a searching…
"This unhappy secret must be disclosed; they must have a complete understanding."
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read the excerpt from act 3 of a dolls house. mrs. linde looking at her…
The use of letters and secret meetings develops the theme that hiding the truth will eventually lead to hardship.
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what does the underlined word mean in the following sentences? la flor …
flower
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what does the underlined word mean in the following sentence? el desier…
desert
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what does the underlined word mean in the following sentence? la luna e…
moon
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what does the underlined word mean in the following sentence? las estre…
stars
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liam wants to start up his own garage. he gets a small business loan to…
El valor mínimo neto es de \(-112000\) dólares y ocurre a los \(6\) meses.
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complete the words so they rhyme with the example. 4 spoil c____ b____ …
6. avoid 7. hoist 8. appoint 9. moist
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given your knowledge of the latin prefix mal-, what does it mean to mal…
First question: to treat someone badly. Second question: misshapen; having a distorted shape.
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which quotation from lady macbeth best supports your answer to the ques…
They are just beginning their crimes.
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which of the following sentences describes a person who is most likely …
- First question: Anna became furious when she heard that someone had stolen her clarinet. - Second question: You are angry about what the candidate says.
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7 strategies for decoding word meaning you can often use context clues …
strange or unusual
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7 strategies for decoding word meaning use 1 of the 7 strategies to dec…
seize for official use
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which reference material would you use to find the synonym of a word? t…
thesaurus
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dictionary - contains a long list of words and their many definitions •…
dictionary
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what is the meaning of affinity in the following sentence? she has an a…
Affinity is possessing a quality of liking or appreciating something.
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what is the meaning of sophistication in the following sentence? she ex…
Sophistication means a state of being complex or cultured.
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answer the statistical measures and create a box and whiskers plot for …
Min: \(4\), Q1: \(5\), Med: \(8.5\), Q3: \(14.5\), Max: \(16\)
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the box plot below represents some data set. what is the range of the d…
\(15\)
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which of the following regressions represents the weakest linear relati…
Regression 3
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the box plot below represents some data set. what is the minimum value …
\(30\)
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distinguish between the absolute error and the relative error in a meas…
- For the example where absolute error is large but relative error is small: **A. A runner’s true weight is 125 pounds, but a scale says he weighs 130 pounds** - For the example w…
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the box plot below represents some data set. what is the minimum value …
\(20\)
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based on the following calculator output, determine the range of the da…
\(314\)
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the box - and - whisker plot below represents some data set. what perce…
50%
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based on the scatter plot below, which is a better prediction for y whe…
62
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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according to masterfoods, the company that manufactures m&ms, 12% of pe…
\(0.880\) \(0.270\) \(0.003\) \(0.522\) \(0.478\)
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what is the equation of the trend line in the scatter plot? use the two…
\(y =-\frac{13}{4}x+\frac{39}{2}\)
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determine whether the scatter diagram indicates that a linear relation …
For the first question: A. The data points do not have a linear relationship because they do not lie mainly in a straight line. For the second question: C. The relationship is not…
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what does it mean to say that two variables are positively associated? …
- For positive association: C. There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable increases. -…
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the box - and - whisker plot below represents some data set. what perce…
75%
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find the mean, variance, and standard deviation of the binomial distrib…
\(4.1\)
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based on the two data sets represented below, complete the following se…
The center of Data Set G is less than the center of Data Set H. The spread of Data Set G is less than the spread of Data Set H.
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based on the two data sets represented below, complete the following se…
The center of Data Set Q is less than the center of Data Set R. The spread of Data Set Q is less than the spread of Data Set R.
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complete parts (a) and (b) below the number of dogs per household in a …
A. A household on average has 0.6 dog with a standard deviation of 1.0 dog
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you are dealt a hand of 8 cards from a standard deck of 52 cards. find …
\(0.003757\)
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a. express the quantified statement in an equivalent way, that is, in a…
a. A. Not all computers are smart. b. C. Some computers are smart.
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a probability experiment is conducted in which the sample space of the …
\(P(E^c)\approx0.333\)
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let the sample space be ( s={1,2,3,4,5,6,7,8,9,10} ). suppose the outco…
\( 0.3 \)
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in a national survey college students were asked, how often do you wear…
The probability for "Always" is approximately \(0.500\)
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in a national survey college students were asked, \how often do you wea…
\(0.290\)
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the following table shows the number of hits (h), number of at - bats (…
David Justice
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what is the relationship between risk and return? a higher risk often m…
A. A higher risk often means a higher return.
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use the data table below to create the given scatter plot, then fill in…
negative
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a food safety guideline is that the mercury in fish should be below 1 p…
C. Yes, because it is possible that the mean is greater than 1 ppm. Also, at least one of the sample values exceeds 1 ppm, so at least some of the fish have too much mercury.
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use the sample data and confidence level given below to complete parts …
D. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.
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which of the following regressions represents the strongest linear rela…
Regression 3
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refer to the accompanying data display that results from a simple rando…
The margin of error is \(E = 3.01\) minutes.
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there are 33 black chips, 21 white chips, 44 blue chips, and 2 red chip…
44%
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if a random sample of five people, the mean driving distance to work wa…
The margin of error \(E\approx4.0\) (rounded to one decimal place)
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here are summary statistics for the weights of pepsi in randomly select…
B. One has 90% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of Pepsi in a can.
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here are summary statistics for randomly selected weights of newborn gi…
D. One has 99% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls.
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a. express the quantified statement in an equivalent way, that is, in a…
a. A. All computers are not smart. b. A. Some computers are smart.
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find the sample size needed to estimate the percentage of adults who ca…
\(1692\)
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a genetic experiment with peas resulted in one sample of offspring that…
A. No, the confidence interval includes \(0.25\), so the true percentage could easily equal \(25\%\)
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for the accompanying data set, (a) draw a scatter diagram of the data, …
Because the correlation coefficient is positive and the absolute value of the correlation coefficient, \(0.105\), is less than the critical value for linear relation exists betwee…
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for the following data set, (a) draw a scatter diagram, (b) compute the…
The linear correlation coefficient is close to \(1\) so a strong positive linear relation exists between \(x\) and \(y\).
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match the linear correlation coefficient to the scatter diagram. the sc…
The scatter - diagram with the most loosely scattered points (showing a very weak negative linear relationship) corresponds to \(r=-0.038\).