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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question #11 find the interquartile range for the following set of data…
8
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a successful basketball player has a height of 6 feet 8 inches, or 203 …
\(4.10\)
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question #12 if a data set has two or more data values that occur the s…
Multiple
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solve for x when ( z = \frac { x - mu } { sigma } ) and ( z = - 0.06 ),…
\(10.582\)
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john looked at his calendar to figure out how much time he spent babysi…
The data set has three modes: \(7.5\), \(8\), and \(9\)
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some students compared how many blocks they live from school. blocks fr…
\(7\)
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evaluate $x = mu+zsigma$ if $mu = 38.9$, $z=-4.91$, and $sigma = 9.2$. …
\(-6.272\)
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ron kept a driving log to see how many miles he drove each day. what is…
\(9\)
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for a psychology assignment, trevor kept a sleep log for 5 days. hours …
\(8\)
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evaluate ( z=\frac{x-mu}{sigma} ) if ( x = 181, mu = 170 ), and ( sigma…
\(1.38\)
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evaluate ( z=\frac{x-mu}{sigma} ) if ( x = 69, mu = 74.2 ), and ( sigma…
\(-2.26\)
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the sample data provided contains numbers of injuries due to distracted…
2,134.86
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question #14 which measure is the data point or average of two data poi…
Third Quartile
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question #15 for a population that is distributed normally with a mean …
\(0.8614\)
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a gymnast jotted down the number of cartwheels she did each day. doing …
8
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the accompanying histogram shows the distribution of mean composite sco…
It supports the answer to part b. Since in a normal distribution, about 68% of data is within one standard deviation of the mean, and 65.7% is close to 68%, it indicates that the …
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a forester measured 29 of the trees in a large woods that is up for sal…
c) \(16\%\) d) \(13.5\%\) e) \(16\%\)
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a forester measured 29 of the trees in a large woods that is up for sal…
b) The central 95% of all tree diameters is between \(0.6\) inches and \(19.8\) inches. c) About \(16\%\) of the trees should have diameters below \(5.4\) inches. d) About \(13.5\…
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question 2 (10 points) piercing the corporate veil means that courts wi…
True
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question #10 find the standard deviation of the following set of sample…
581.19
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a forester measured 29 of the trees in a large woods that is up for sal…
a) Since the mean \(\mu = 10.2\) and standard deviation \(\sigma = 4.8\), the correct normal model is the one where \(\mu = 10.2\) and we can calculate the intervals using \(\mu\p…
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a forester measured 29 of the trees in a large woods that is up for sal…
The central 95% of the tree diameters are between \(0.6\) inches and \(19.8\) inches.
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a forester measured 29 of the trees in a large woods that is up for sal…
B.
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hannah jottev down how many baskets she made during basketball practice…
\(3\)
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question #7 find the mean of the data set given: 13, 18, 39, 53, 66, 83…
50
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jack tracked how many laps he ran in the past 6 days. what is the mode …
\(5\)
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a particular iq test is standardized to a normal model, with a mean of …
16
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question #6 what is the mode of the following set of data? 22 34 64 88 …
34 and 64
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several people compared how many web pages they had visited. what is th…
\(7\)
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a particular iq test is standardized to a normal model, with a mean of …
34
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question #5 what is the median score achieved by a student who received…
69
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a particular iq test is standardized to a normal model, with a mean of …
\(0.15\)
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question #4 what is the mean score achieved by a student who received t…
85
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a particular iq test is standardized to a normal model, with a mean of …
The central 99.7% of the IQ scores are between \(70\) and \(130\).
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a particular iq test is standardized to a normal model, with a mean of …
A.
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question #3 for a population that is normally distributed with a mean o…
\(0.15\%\)
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fuel economy estimates for automobiles built one year predicted a mean …
b) The interval is from \(7.2\) to \(44.4\) mpg. c) About \(16\%\) of autos should get more than 32 mpg. d) About \(13.5\%\) of autos should get between 32 and 38.2 mpg.
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read the excerpt from enriques journey. moreover, the mara salvatrucha …
It supports the idea that the gangsters are involved in criminal activities. It shows what happens when police allow gangsters to operate.
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fuel economy estimates for automobiles built one year predicted a mean …
16
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fuel economy estimates for automobiles built one year predicted a mean …
7.2 to 44.4
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brianna is a manager for a clothing store and sometimes finds merchandi…
\(29\%\)
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elite has the same or almost the same meaning as: tiny final wrong best
best
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aloofness has the same or almost the same meaning as: wilderness remote…
remoteness
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from unit 3, lesson 4 a seed is planted in a glass pot, and its height …
a. - The slope of the best - fit line is \(0.404\). - The slope means the plant grows approximately \(0.404\) centimeters per day. - It is reasonable as it represents a positive g…
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incidentally means : in such a manner as could not be otherwise with ob…
by the way (used to introduce a new topic)
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3 which of these scatter plots is best fit by the shown linear model? a…
B.
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the brazilian had time to take a look and size up the situation. source…
B. evaluate
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incredulous has the same or almost the same meaning as: engaging temper…
disbelieving
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a statistics professor plans classes so carefully that the lengths of h…
\(0.025\)
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sophisticated has the same or almost the same meaning as: unjust worldl…
worldly
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the waiting times between a subway departure schedule and the arrival o…
\(0.594\)
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they bicker and flirt and handle each other. source: native in the sent…
squabble
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4 from unit 3, lesson 3 data is collected about the number of wins and …
For problem 4: Yes, there is an association. The column - relative frequencies of wins and losses are different for teams with animal mascots and teams with other mascots. For pro…
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aloofness means : a difference between conflicting facts or claims or o…
a disposition to be distant and unsympathetic in manner
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elite means : selected as the best often used as intensifiers spoken wi…
selected as the best
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3 a taxi driver records the time required to complete various trips and…
a. The estimated distance for a 20 - minute trip is \(9.757\) miles. b. The estimated time for a 6 - mile trip is approximately \(12\) minutes.
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the graph shows the relationship between the price of an item in dollar…
C. An item with a price of \$30 has a sales tax of \$2.85
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unfathomable means : impossible to come to understand highly offensive;…
impossible to come to understand
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nonchalantly has the same or almost the same meaning as: efficiently de…
casually
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stricken has the same or almost the same meaning as: modern wealthy ill…
ill
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gallantly means : in a heroic or brave manner cautiously and with fores…
in a heroic or brave manner
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gallantly means : in a heroic or brave manner cautiously and with fores…
in a heroic or brave manner
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10. which equation could represent a possible trend line for the data i…
B. \(y = 2x + 1\)
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2 the scatter plot shows the number of minutes people had to wait for s…
### Part a - **Meaning**: For each additional staff member, the wait time decreases by approximately \(1.62\) minutes. - **Realism**: Yes. ### Part b - **Meaning**: If there are n…
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the history professor.\ \yeah. it didnt work out for me living at home.…
It emphasizes the intensity of Annabeth's feelings.
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highlight the word or phrase that makes the thesis statement wordy. alt…
meant to
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1 the scatter plot shows the number of times a player came to bat and t…
The point \((318,80)\) means that a player came to bat \(318\) times and had \(80\) hits.
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which phrase is similar in meaning to shimmering? singing with a high, …
shining with a faint, flickering light
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changes to state voting laws to understand how the 2013 supreme court d…
that many instances of alleged voter fraud are due to administrative error
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almost total darkness. i couldnt see anything of annabeth except a glin…
C. Facing challenges is an important part of developing one's identity.
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question 7 of 10 an active reader could say all of the following phrase…
C. "I didn't know that."
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smoothies. she bought blue - corn tortilla chips and brought home blue …
Percy enjoys being with his mom and feels protective of her.
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the graph shows the exponential regression model for data representing …
The graph of the regression model can be used to predict the population size for any number of years in the future.
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select the word or phrase that is redundant and can be removed without …
"combustible"
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soon mark and i were on the team, and i was content. now we were friend…
The clue is "happy".
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friends on and off the field mark and i are always together. we have a …
"always together", "never fail to be there for each other"
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question 14(multiple choice worth 3 points) (lesson 5.5 lc) when drivin…
D. perform all of the above
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the accompanying venn diagram shows the number of elements in region v.…
There are \(2\) elements in region I. There are \(3\) elements in region II. There are \(4\) elements in region III. There are \(5\) elements in region IV. There are \(8\) element…
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in baseball, a players batting average is the proportion of times the p…
\(50.14\%\)
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an unanswered constitutional question about the judicial branch involve…
what "good behavior" means, with regard to judicial terms.
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based on a poll, among adults who regret getting tattoos, 21% say that …
\(0.2503\)
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for the binomial distribution, which formula finds the standard deviati…
$\sqrt{npq}$ (the second option)
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assume that hybridization experiments are conducted with peas having th…
The value of the mean is \(\mu = 22.5\) peas. The value of the standard deviation is \(\sigma\approx2.4\) peas.
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assume that different groups of couples use a particular method of gend…
a. Mean \(\mu = 15\), standard deviation \(\sigma\approx2.7\) b. Significantly low: \(9.6\) girls or fewer; Significantly high: \(20.4\) girls or greater.
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determine whether the given procedure results in a binomial distributio…
C. Yes, because the procedure satisfies all the criteria for a binomial distribution.
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the accompanying table describes results from groups of 8 births from 8…
a. \(0.204\) b. \(0.73\) c. B. No, since the appropriate probability is greater than \(0.05\), it is not a significantly high number.
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college students are randomly selected and arranged in groups of three.…
A. Yes, the table shows a probability distribution. A. \(\mu = 1.6\) students A. \(\sigma=0.9\) students
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determine whether the value is a discrete random variable, continuous r…
a. B. It is a discrete random variable. b. B. It is a discrete random variable. c. C. It is not a random variable. d. B. It is a discrete random variable. e. A. It is a continuous…
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is the random variable given in the accompanying table discrete or cont…
The random variable is discrete.
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the scatter plot shows the number of hours worked, x, and the amount of…
(a) \(\$1.82\) (b) \(\$12.36\) (c) \(\$26.92\)
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you pick a card at random, put it back, and then pick another card at r…
\(\frac{2}{9}\)
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you flip a coin twice. what is the probability of getting heads and the…
\(\frac{1}{4}\)
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a pharmaceutical company receives large shipments of aspirin tablets. t…
The company will accept \(48.68\%\) of the shipments and will reject \(51.32\%\) of the shipments.
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evaluate $\\sigma=\\sqrt{np(1 - p)}$ for $n = 41$, $p = 0.5$. $\\sigma=…
\(3.2\)
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analyzing the effect of imagery on meaning read the passage. then answe…
What does Portia compare a rumor to? - a fight or disturbance. How does she describe the way the rumor is circulating? - being carried by the wind. What is Shakespeare's purpose i…
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for the following situation, find the mean and standard deviation of th…
\(29.96\)
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the following table displays a frequency distribution for the number of…
\(4,5,6,7,8\)
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six stand - up comics, a, b, c, d, e, and f, are to perform on a single…
\(\frac{1}{720}\)
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read the sentences below, filling in the blanks with items from this li…
1. text structure 2. chronological order 3. cause and effect 4. problem and solution 5. compare and contrast 6. descriptive 7. purpose
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in how many ways can a committee of two democrats and three republicans…
\(3780\)