統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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37. one population has a mean of $mu = 50$ and a standard deviation of …
a. Sketch two normal - shaped curves centered at 50 with different spreads according to $\sigma = 15$ and $\sigma = 5$. b. The score $X = 65$ is not an extreme value in the popula…
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on an exam with a mean of m = 40, you obtain a score of x = 35. a. rela…
a. The performance is better with $s = 8$. b. The performance is better with $s = 2$.
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task two for each of the following scenarios, write your own persuasive…
1. Eating too much chocolate can lead to weight gain and tooth decay, so it's best to cut back. 2. Statistics show that drink - driving is a major cause of accidents and can lead …
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34. everyone experiences \ups and downs\ in life satisfaction. boehm, w…
a. Low Mortality Sample: $M = 5$, $SS = 40$, $s^{2}=4$, $s = 2$. High Mortality Sample: $M = 5$, $SS = 180$, $s^{2}=18$, $s\approx4.24$. b. Low Mortality Sample: $M = 5\pm2$ High …
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what does this sign indicate? one way you must only travel in the direc…
You must only travel in the direction in which the arrow is pointing.
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what does this sign indicate? one way you must only travel in the direc…
You must only travel in the direction in which the arrow is pointing.
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logos an appeal to logic and reason. logos is a greek word meaning a wo…
An example could be: You're great at English and I'm struggling with this essay. If you help me, we can improve the quality of the writing together.
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the proportion p of residents in a community who recycle has traditiona…
(a) $H_0:p = 0.7$, $H_1:p<0.7$ (b) z - test statistic for a proportion (c) $-1.356$ (d) $0.087$ (e) No
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32. for the data in the following sample: 1, 1, 9, 1 a. find the mean, …
a. Mean: 3, $SS$: 48, Variance: 16, Standard deviation: 4 b. New $SS$: 3, New variance: 1, New standard deviation: 1 c. An extreme score can increase the mean and standard deviati…
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logos an appeal to logic and reason. logos is a greek word meaning a wo…
A personal example to persuade a friend to help with a move could be: "Moving boxes requires two - person effort. You are strong and I need help. So, you should help me move."
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based on their records, a hospital claims that the proportion, $p$, of …
(a) $H_0:p = 0.41$, $H_1:p eq0.41$ (b) z - test statistic for a proportion (c) $1.638$ (d) $0.101$ (e) No
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if retro means \back\ and spec means \to see or look,\ what is the best…
in considering the past
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read the meanings of the word fold, then read the sentence. definition …
Definition 4
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a marriage counselor has traditionally seen that the proportion p of al…
(a) $H_0:p = 0.8$; $H_1:p>0.8$ (b) z - test for a proportion (c) $2.224$ (d) $0.013$ (e) Yes
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if biblio is a word root meaning \book,\ and phil means \love,\ what is…
B. someone who adores books
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read the chart. homophone meaning by beside or near buy to purchase som…
A. by, buy
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32. for the data in the following sample: 1, 1, 9, 1 a. find the mean, …
a. Mean = 3, $SS = 48$, Variance = 16, Standard deviation = 4 b. New $SS = 3$, New variance = 1, New standard deviation = 1 c. An extreme score can increase the mean and the stand…
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the proportion p of residents in a community who recycle has traditiona…
(a) $H_0:p = 0.6$, $H_1:p<0.6$ (b) z - test statistic for a proportion (c) $-2.769$ (d) $0.003$ (e) Yes
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salma recently switched her primary doctor to one specializing in carin…
(a) $H_0:\mu = 115$; $H_1:\mu>115$ (b) t - test statistic (c) $0.964$ (d) $0.174$ (e) No
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a coin - operated drink machine was designed to discharge a mean of 6 f…
(a) $H_0:\mu = 6$, $H_1:\mu eq6$ (b) t - test statistic (c) $2.537$ (d) $0.024$ (e) Yes
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a coin - operated drink machine was designed to discharge a mean of 8 f…
(a) $H_0:\mu = 8$; $H_1:\mu eq8$ (b) $t$ - test statistic (c) $2.477$ (d) $0.026$ (e) Yes
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study the table, which shows the meanings of common homophones. homopho…
their
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determining the correct homophone. read the sentence and study the tabl…
Which homophone correctly completes the sentence? brake Which word provides a context clue that supports your answer? stationary
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read the sentence and study the table. the 100 - year - old document wa…
disintegrating
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read the sentence and study the table. jaren and shardae found that coo…
requiring effort
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read the sentence and study the table. the womens club held fundraisers…
twice a year
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jane recently switched her primary doctor to one specializing in caring…
(a) $H_0:\mu = 120$, $H_1:\mu>120$ (b) t - statistic (c) $2.326$ (d) $0.016$ (e) Yes
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7. which sentence best illustrates the meaning of enthusiastically? * 1…
7. b. Mike didn't hesitate to volunteer for the basketball team. 8. b. He moves slowly and a bit shyly.
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5. in the circuit, what is the one constant thing in panchitos life? * …
5. d. his family 6. a. without thinking
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of the following statements, which does not represent variations in one…
D. What is meaningful to one person is meaningful to another.
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whether or not incoming information is perceived as meaningful influenc…
T
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which of the following statements is not correct concerning the relatio…
Individuals can easily detect changes in the environment when they are absorbed in a task.
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an electronics manufacturing process has historically had a mean comple…
(a) $H_0:\mu = 70$, $H_1:\mu<70$ (b) t - test statistic (c) $-0.273$ (d) $0.397$ (e) No
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suppose that $chi^{2}$ follows a chi - square distribution with 22 degr…
(a) Using a chi - square calculator with $df = 22$ and $x = 22$, we get $P(\chi^{2}\leq22)\approx0.500$. (b) Using the inverse - cumulative distribution function of the chi - squa…
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30. for the following population of n = 6 scores: 2, 9, 6, 8, 9, 8 a. c…
a. Range = 7, Standard deviation $\approx2.45$ b. Range = 7, Standard deviation $\approx2.45$ c. Adding a constant to each score does not affect measures of variability (range and…
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suppose that $chi^{2}$ follows a chi - square distribution with 19 degr…
(a) Using the ALEKS calculator, for $\chi^{2}$ with $df = 19$, $P(\chi^{2}\leq11)\approx0.109$ (b) Using the ALEKS calculator, for $\chi^{2}$ with $df = 19$ and right - tailed pro…
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an airline is trying two new boarding procedures, option 1 and option 2…
(a) $H_0:\mu_1\geq\mu_2$, $H_1:\mu_1 < \mu_2$ (b) z - test (c) $-1.333$ (d) $0.091$ (e) No
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a decade - old study found that the proportion, p, of high school senio…
(a) $H_0:p = 0.60$; $H_1:p eq0.60$ (b) z - test statistic for a proportion (c) $5.850$ (d) $0.000$ (e) Yes
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question 9 of 20 : select the best answer for the question. 9. the lega…
D. renounce your citizenship
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thanks to an initiative to recruit top students, an administrator at a …
(a) $H_0:\mu = 115$, $H_1:\mu>115$ (b) $t$-test statistic (c) $0.750$ (d) $0.236$ (e) No
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the breaking strengths of cables produced by a certain manufacturer hav…
(a) $H_0:\mu = 1775$, $H_1:\mu>1775$ (b) $z$ (c) $0.949$ (d) $0.171$ (e) No
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big corporation advertises that its light bulbs have a mean lifetime, $…
(a) $H_0:\mu = 2800$, $H_1:\mu eq2800$ (b) Type II error (c) A Type I error would be rejecting the hypothesis that $\mu$ is equal to 2800 when, in fact, $\mu$ is equal to 2800.
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suppose that $chi^{2}$ follows a chi - square distribution with 5 degre…
(a) $0.587$ (b) $11.07$
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suppose that $chi^{2}$ follows a chi - square distribution with 17 degr…
(a) $P(\chi^{2}\leq26)=0.922$ (b) $k = 30.19$
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calculate each value requested for the following set of scores. scores:…
(a) 5 (b) 9 (c) 25
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26. a population has a mean of μ = 50 and a standard deviation of σ = 1…
a. Mean = 53, Standard deviation = 10 b. Mean = 100, Standard deviation = 20
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send data to excel less than high school high school college higher tha…
(c) 7.78 (d) Yes
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26. a population has a mean of $mu = 50$ and a standard deviation of $s…
a. Mean = 53, Standard deviation = 10 b. Mean = 100, Standard deviation = 20
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24. a sample of $n = 10$ scores has a sample mean of $m = 25$ and a sam…
$\sum X = 250$, $SS = 144$
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finding the main idea you will find three different paragraphs regardin…
C. Reconstruction was a time period where some people took advantage of the chaos that occurred after the war for personal gain; this behavior caused the white Southerners to beco…
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finding the main idea you will find three different paragraphs regardin…
B. Reconstruction is the time after the Civil War meant to rebuild the South that led to some protections for ex - slaves while feeding the anger and frustration of the southern w…
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wild geese by mary oliver you do not have to be good. you do not have t…
Metaphor: "the soft animal of your body", compares body to a soft animal. Simile: "calls to you like the wild geese", compares the world's call to the call of wild geese.
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what is the difference between verbal irony and situational irony? (1 p…
D. Verbal irony is when someone says the opposite of what they mean, while situational irony is when the expected outcome of an event defies normal expectations.
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the general social survey is an annual survey given to about 1500 u.s. …
(a) $H_0: p_1 - p_2 = 0$, $H_1: p_1 - p_2 eq0$ (b) Two - sample z - test for proportions (c) $2.834$ (d) $0.005$ (e) Yes
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suppose that $chi^{2}$ follows a chi - square distribution with 27 degr…
(a) $0.729$ (b) $43.19$
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let $p_1$ and $p_2$ be the respective proportions of women with nutriti…
Lower limit: $-0.077$ Upper limit: $0.119$
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3. based on the data, about how many members would you expect the chess…
28
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choose the poem that uses alliteration. look back with longing eyes and…
The first poem: "Look back with longing eyes and know that I will follow, Lift me up in your love as a light wing lifts a swallow, Let our flight be far in sun or windy rain— But …
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a cognitive scientist wants to test whether there is any difference in …
(a) \(H_0:\mu_1\geq\mu_2\), \(H_1:\mu_1 < \mu_2\) (b) Two - sample t - test (c) \(-0.763\) (d) \(0.230\) (e) No
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vcu rams stats - 2016-17 year 2016 - 17 game statistics player gp min p…
1. Doug Brooks 2. Approximately 16.65 3. Jordan Burgess
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a nationwide job recruiting firm wants to compare the annual incomes fo…
(a) $H_0:\mu_1\leq\mu_2$, $H_1:\mu_1 > \mu_2$ (b) z - test (c) $1.983$ (d) $2.326$ (e) No
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calculate ss, variance, and standard deviation for the following sample…
$SS = 36$, Variance $= 9$, Standard Deviation $= 3$
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swimming statistics directions: use the image of the swimming pool to a…
1. 14 laps 2. 4.807 seconds 3. 1000 inches 4. $\frac{5}{3}\approx1.67$ meters 5. 90 laps
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question a mathematics teacher wanted to see the correlation between te…
99
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read the excerpt from daniels comparative essay. (1) despite the many f…
It focuses on one main character and one main plot event.
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read the excerpt from daniels comparative essay. (1) despite the many f…
Short stories usually focus on one main character and one main event.
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read the excerpt from ronald reagans \tear down this wall\ speech. as i…
The repetition emphasizes the principles of freedom.
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question the number of newly reported crime cases in a county in new yo…
629
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los puntos de datos en el siguiente diagrama de dispersión muestran el …
# Explicación: ## Paso 1: Identificar los puntos Observar los puntos de datos en el diagrama de dispersión que representan la relación entre la taquilla (en millones de dólares) e…
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juan and neo play a game. each player holds out a hand at the same mome…
The list of all possible combinations is: (R,R), (R,P), (R,S), (P,R), (P,P), (P,S), (S,R), (S,P), (S,S). The probability that they both choose the same object is $\frac{1}{3}$.
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the following histogram represents the number of text sent in a day by …
25%
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the following data was used to make a histogram. 8, 20, 20, 25, 41, 58,…
3
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a data set 20, 36, 52, 56, 24, 16, 40, 4, 28 represents the number of b…
A box - plot is constructed with minimum = 4, Q1 = 18, Q2 = 28, Q3 = 46, maximum = 56.
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6 what is the value of the third quartile in the box plot shown below? …
(3) 36
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26 the sixth - grade classes at west road elementary school were asked …
38%
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data set 20, 36, 52, 56, 24, 16, 40, 4, 28 represents the number of boo…
38
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26 julia surveyed 150 of her classmates at city middle school to determ…
| | Horse | Dolphin | Penguin | Total | |---|---|---|---|---| | Male | 28 | 18 | 23 | 69 | | Female | 14 | 42 | 25 | 81 | | Total | 42 | 60 | 48 | 150 |
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26 julia surveyed 150 of her classmates at city middle school to determ…
(2) 45.2
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a box plot is shown below. which number represents the third quartile? …
(3) 60
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14 donna and andrew compared their math final exam scores from grade 8 …
(3) Andrew has a larger interquartile range than Donna.
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28 the ages of the last 16 united states presidents on their first inau…
$10.5$
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berkeley central high school, a survey was conducted to see if students…
(2) 37
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10 different ways to represent data are shown below. which data represe…
(4) I, II, and III
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22 given the following data set: 65, 70, 70, 70, 70, 80, 80, 80, 85, 90…
(4) I, II, and III
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10 a middle school conducted a survey of students to determine if they …
(3) 72
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19 below are two representations of data. a: 2,5,5,6,6,6,7,8,9 b: which…
(3) upper quartile of A < upper quartile of B
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5) data set 6, 4, 23, 17, 12, 16, 21, 20 median = ____ upper quartile =…
Median = \(16.5\) Upper Quartile = \(20.5\) Lower Quartile = \(9\) IQR = \(11.5\)
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4) data set: 45,62,72,45,62,72 median = ____ upper quartile = ____ lowe…
Median = 62 Upper Quartile = 72 Lower Quartile = 45 IQR = 27
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3) data set: 2, 12, 4, 14, 5, 13, 8, 19, 17, 15 median = ______. upper …
Median = $12.5$, Upper Quartile = $15$, Lower Quartile = $5$, IQR = $10$
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question 25 ahmad buys a bag of cookies that contains 6 chocolate - chi…
$0.1429$
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e and f are mutually exclusive events. p(e) = 0.1; p(f) = 0.6. find p(e…
0
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in a survey of 274 professional athletes, it was found that 136 of them…
1. 33 2. 57 3. 187 4. 132 5. 241 6. 105
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question 3 (4 points) what is the primary constitutional purpose of the…
To apportion seats in the U.S. House of Representatives among the states
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suppose $n = 11$ and $r = 4$. compute the hypergeometric probabilities …
a. 0.42 b. 0.109 c. 0.2121 d. 0.18 e. 0
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christianity and the social crisis it used to be a fine thing to mark h…
The third option (since the first two are incorrect based on the text's meaning and the third likely aligns with the idea of poor circumstances for immigrants as described).
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food allergies affect an estimated 17% of children under age 5 in the u…
$0.851$
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1) data set: 4, 8, 6, 2, 9, 7, 5, 7, 8, 10 median = ____ upper quartile…
Median = $7$ Upper Quartile = $8$ Lower Quartile = $5$ IQR = $3$
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in every community there are men of goodwill, who, if they had the mone…
The rich are more fit and are thus more able to provide help.
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read the passage from the railroad builders by john moody. then, decide…
B) Half of the United States preferred transportation by boat and the other half favored the railroad. The dilemma was a source of disagreements, conversations, and news articles …
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text evidence, context clue, what i think the word means, dictionary de…
For "probing": Context Clue - Hand movement indicating exploration; What I think the word means - poking/examining something; Dictionary Definition - physically exploring or exami…