Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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latoya wants to estimate ( p ), the proportion of all students at her l…
0.176 to 0.384
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what proportion of students are willing to report cheating by other stu…
$SE_{\hat{p}} = 0.0239$
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a recent poll of 738 randomly selected customers of a major u.s. cell -…
0.205 to 0.256
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you have 6 pizzas and you want to give each person \\(\\frac{2}{8}\\) o…
1. 24 people 2. $78 - 14$ 3. $1\frac{5}{6}$ or $\frac{11}{6}$ 4. 10.5
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choose and collect representations of the model shown.
If we assume the model is fraction multiplication of $\frac{3}{4}$ and $\frac{1}{2}$, the result is $\frac{3}{8}$.
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choose and collect representations of the model shown. done $2 \\times …
The correct representations are: - $2\times\frac{3}{4}$ - "2 groups of $\frac{3}{4}$" - $\frac{3}{4} + \frac{3}{4}$ (If choosing from the two given boxes: the correct one is $2\ti…
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suppose one hundred eleven people who shopped in a special t - shirt st…
B. convenience
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suppose one hundred eleven people who shopped in a special t - shirt st…
41%
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the impeachment process impeachment charges an officeholder with miscon…
articles of impeachment
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select the best evidence to support the statement that the narrators pa…
But someone has sent my parents a list of the top ten schools nationwide (based on the opinion of selected educators and others) and so... we nestle into a Dutch colonial on the B…
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article 1 of the constitution article 1 of the constitution lays out th…
Congress is made up of two chambers
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4 from unit 5, lesson 2 function g takes a students first name for its …
The first name "Jada" has 4 letters (since function \( G \) outputs the number of letters in the input first name, and here the input is "Jada" with output 4). #### Part b
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compromises of the new government the u.s. constitution debate at the c…
the Senate
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the french and indian war from alliance to swelling tension like all co…
liberty
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in the early 1900s, what did it mean for cities to be \dry\? cities had…
C. Cities restricted the sale and consumption of alcohol.
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a coin is tossed three times, with possible outcomes: {hhh, hht, hth, t…
The graph with X - axis values 0,1,2,3 (the bottom - left graph) where \( P(X = 0)=P(X = 3)\approx0.125 \) and \( P(X = 1)=P(X = 2)\approx0.375 \)
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a teacher categorized students by whether they regularly completed home…
(a) 0.65 (b) 0.48 (c) 0.71 (d) 0.88 (e) No
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constructing a probability distribution coin toss heads: x probability:…
\( a = 0.25 \) \( b = 0.5 \) \( c = 0.25 \)
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what does the italicized word mean in the following sentence? ¿puedo to…
to take
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select the best evidence to support the statement that the narrator bel…
The best evidence is: "Lonnie wouldn't tell me to jump unless he had a good reason."
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in the data set below, what is the interquartile range? 2 3 4 6 8 9
$5$
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a town has a population of 12000 and grows at 5% every year. what will …
21550
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given the following exponential function, identify whether the change r…
Growth, 9% increase
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given the following exponential function, identify whether the change r…
Decay, 8% decrease
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3 multiple choice 1 point when buying a home, the initial amount borrow…
3. principal 4. the cost of making one decision over another
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as part of a statistics project, a teacher brings a bag of marbles cont…
1. The data collection method: Observational Study 2. The target population consists of: The 900 marbles in the bag 3. The sample consists of: The 100 marbles drawn by the student
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in the data set below, what is the interquartile range? 12 31 32 40 43 …
$37$
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reviewing computing probability when rolling two fair dice, the probabi…
A. different.
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(algebra 1, unit 1, lesson 14) a large company releases summary statist…
A. Yes ### Reasoning: Using the IQR method, the interquartile range (IQR) is $18,000$. The lower outlier threshold is $23,000$, and the minimum salary of $18,000$ falls below this…
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reviewing computing probability if two fair dice are rolled, there are …
3 (Assuming the question is about rolling a sum of 4, as the original question was cut off but following the pattern of the example with sum 3. If the actual sum is different, the…
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with a fair die, the probability of rolling any number 1 through 6 is t…
1
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in the data set below, what are the lower quartile, the median, and the…
lower quartile = $37$ median = $55$ upper quartile = $74$
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in the data set below, what are the lower quartile, the median, and the…
lower quartile = $3$ median = $6$ upper quartile = $7$
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a fair die is a cube with numbers 1 through 6 on the sides, represented…
1/6 (corresponding to the option with value 1/6)
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question 7 the article says: like the huge snapple ice pop in new york …
A. large
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the theoretical probability of an event is the number of ways an event …
\( \frac{1}{13} \) (corresponding to the option "1/13")
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lincoln high wants to estimate the number of seniors who plan to go to …
A. 25 seniors are randomly selected; 14 plan to go to a 4 - year college. ### Part (b)
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reviewing computing probability the theoretical probability of an event…
\( \frac{1}{13} \) (corresponding to the option "1/13") ### Second Question (Experimental Probability of Landing on Heads):
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researchers asked 200 families whether or not they were homeowners and …
74 ### Part (b)
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read the passage, then use the explanation to infer the meaning of the …
most widely used
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a movie club surveyed 300 high school students. the students were asked…
(a) \(74\%\) (b) \(44\%\)
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when publicity stunts get goofy question 3 which means the opposite of …
A. seller
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in a survey, 150 shoppers were asked whether they have access to a comp…
(a) \(58\%\) (b) \(64\%\)
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read the sentence, and use synonym context clues to determine the defin…
1. The word opprobrium most likely means strong public disapproval or condemnation. 2. A synonym for opprobrium is disapproval.
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each of the 5 cats in a pet store was weighed. here are their weights (…
(a) Mean: 8.6 pounds (b) Median: 8 pounds
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rosanne has been babysitting on the weekends to make money to buy a new…
The distribution of the amounts earned is best described as **right-skewed**. So, the **median** is a more appropriate measure of variation central tendency than the **mean**, and…
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each of 6 students reported the number of movies they saw in the past y…
(a) Median: \(10.5\) movies (b) Mean: \(11.8\) movies
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dave kept track of the rainfall in his hometown of oak valley during ea…
The distribution of the rainfall is best described as **approximately symmetric**. So, the mean **is** an appropriate measure of center.
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Question was provided via image upload.
\(0.03\) #### 2. \(0.1 \times 0.6\)
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a group of 7 students was asked, \how many hours did you watch televisi…
(a) Median: \(15\) hours (b) Mean: \(12.3\) hours
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below are the dot plots for two data sets. (a dot plot is sometimes cal…
Mean of Data Set A: \(5\) Mean of Data Set B: \(4.5\)
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bike rental (0, 12) (2, 20) (4, 28) (6, 36) (8, 44)
All given points (0, 12), (2, 20), (4, 28), (6, 36), (8, 44) lie on the line $y=4x+12$ and are valid for the bike rental graph. If the task is to confirm all fit the pattern, all …
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standard deviation fiona recorded the number of miles she biked each da…
\(\boldsymbol{\sigma^2=\frac{(4 - 6)^2+(7 - 6)^2+(4 - 6)^2+(10 - 6)^2+(5 - 6)^2}{5}}\) (the second option)
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the monthly mean salaries and standard deviations of four college stude…
The monthly salary of Shenika is less spread out than the monthly salary of Clarissa.
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below are the dot plots for two data sets. (a dot plot is sometimes cal…
Mean of Data Set A: \(6.5\) Mean of Data Set B: \(6\)
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yun computes the mean and standard deviation for the sample data set 12…
Yuri divided by \( n \) instead of \( n - 1 \).
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cphs : advanced algebra: concepts and connections - block (27.0831030) …
The data point is 1.3 standard deviations away from 12.
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the test scores of a geometry class are given. 90, 75, 72, 88, 85 the t…
258
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después de irse de la oficina postal, jabari conduce $\frac{1}{10}$ de …
\( 2\frac{2}{5} \) millas (suponiendo que la distancia previa era \( 2\frac{3}{10} \) millas; si la distancia previa era distinta, el número mixto cambiaría, pero dado el contexto…
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which formula is used to calculate the standard deviation of sample dat…
\( s = \sqrt{\frac{(x_1 - \bar{x})^2 + (x_2 - \bar{x})^2 + \dots + (x_n - \bar{x})^2}{n - 1}} \) (the third formula)
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below are the dot plots for two data sets. (a dot plot is sometimes cal…
Mean of Data Set A: \(\boldsymbol{3}\) Mean of Data Set B: \(\boldsymbol{5.5}\)
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the weekly salaries of a sample of employees at the local bank are give…
17,507.5
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a scientist collected two sample sets of snowfall data. which statistic…
standard deviation
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standard deviation the number of cars sold at a dealership over several…
6.9
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standard deviation mrs. rodrigues wants to compare the spread of the te…
standard deviation
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statistical analysis imary purpose of statistical analysis in scientifi…
to analyze and interpret the data collected during an experiment
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statistical analysis the correlation coefficient is the statistical mea…
correlation coefficient
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understand z - scores the data value ( x ) exists in two data sets: a a…
It is less than $z_{x}$ for set B.
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the test scores of the students in four classes are summarized below. a…
C. Class C ### Part (b)
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part 1: if 540 people preferred hamburgers, how many people preferred p…
B. 810
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the ages of the members of four teams are summarized below. answer the …
B. Team B ### Part (b)
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a data set has the following characteristics: mean: 4.9 median: 6 mode:…
$z_{1}=-1.95$, $z_{5}=0.05$, $z_{8.1}=1.6$
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a data set has the following characteristics. mean: 4.9 median: 6 mode:…
standard deviations
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find the equation of the exponential function represented by the table …
$y = 0.02(0.5)^x$
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6-60. figure 3 of a tile pattern has 11 tiles, while figure 4 has 13 ti…
a. $t=2n+5$ where $t$ is the number of tiles and $n$ is the figure number b. Figure 505
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a bag contains 18 red marbles, 6 white marbles, and 3 gray marbles. you…
27
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milan wants to find the average time it takes lincoln high school stude…
- hours - seconds - minutes ### Part (b)
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calculate standard deviation this is a multi - part item. a contractor …
The first option \((250)^2 + (-400)^2 + (-250)^2 + (350)^2 + (100)^2 + (-50)^2 = 420000\) (or as presented in the option with the corrected sum) represents the numerator (sum of s…
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fill in the missing numbers to complete the pattern; 5.66, , 5.86, 5.96…
The missing numbers are \(5.76\) and \(6.06\). So the sequence is \(5.66, \boldsymbol{5.76}, 5.86, 5.96, \boldsymbol{6.06}, 6.16\).
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cphs : advanced (270831030) standard deviation $\\sigma^2 = \\frac{(x_1…
The data is a sample and is expected to be less dispersed from the mean.
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question 4 (multiple choice worth 2 points) (04.03 mc) using your knowl…
C. A weak speech
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6-59. lashayia is famous for her delicious brownies, which she sells at…
a. $\$18.00$ b. 19 brownies
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a car rental company sells accident insurance to 28% of its customers. …
188
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this is a multi - part item. a contractor records the areas, in square …
\( s = \sqrt{\frac{(x_1 - \bar{x})^2+(x_2 - \bar{x})^2+\dots+(x_n - \bar{x})^2}{n - 1}} \) (the fourth formula option)
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a toy machine has equal numbers of red, white, and blue rubber balls. r…
A. Let 1 and 2 represent red, let 3 and 4 represent white, and let 5 and 6 represent blue.
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looking at this graph, can you safely estimate how much coffee will be …
b) no
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calculate a contractor records all of the bedroom areas, in square feet…
29.4
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fill in the missing numbers to complete the pattern: □, 3.47, □, 3.57, …
The missing numbers are \(3.42\) and \(3.52\) (in order, the first blank is \(3.42\), the second blank is \(3.52\))
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a jar contains 8 marbles marked with the numbers 1 through 8. you pick …
$\frac{7}{8}$
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use the graph to help you complete these two sentences. the graph shows…
1. The graph shows that US petroleum (oil) consumption **increased** during Carter's presidency. 2. This means that Americans responded to Carter's energy policy by **increasing t…
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for breakfast, clarissa can choose from oatmeal, cereal, french toast, …
Clarissa is not correct; the event that she will have oatmeal for breakfast is unlikely to happen. Since there are 4 breakfast choices, the probability that she will choose oatmea…
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use the graph to help you complete these two sentences. the graph shows…
1. The graph shows that US petroleum (oil) consumption **increased slowly** during Carter's presidency. 2. This means that Carter's energy policy was paired with a slow rise in pe…
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use the graph to help you complete these two sentences. the graph shows…
1. The graph shows that US petroleum (oil) consumption **increased** during Carter's presidency. 2. This means that Americans responded to Carter's energy policy by **increasing t…
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the numbers below are the ages of players on a soccer team. create a st…
| Stem | Leaf | |------|------| | 1 | 9 | | 2 | 0, 1, 3, 4, 6, 8, 9 | | 3 | 1, 4, 8, 8, 9, 9 | | 4 | 1, 2 | *Clave: $4|1 = 41$*
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fill in the missing numbers to complete the pattern: 6.90, , 7.30, 7.50…
The missing numbers are \(7.10\) and \(7.70\). So the sequence is \(6.90, 7.10, 7.30, 7.50, 7.70, 7.90\).
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a car traveled 240 miles in 3 hours. at this rate, how many miles will …
D. 40 mi
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fill in the missing numbers to complete the pattern: 0.8, , , 1.4, 1.6,…
The missing numbers are \(1.0\) and \(1.2\), so the sequence is \(0.8, 1.0, 1.2, 1.4, 1.6, 1.8\).
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create a stem and leaf plot from the numbers below using the given key.…
| Stem | Leaf | |------|------| | 0 | 9 | | 1 | 0, 4 | | 2 | 1, 7 | | 3 | 2, 4, 5, 9 | *Clave: $3|2 = 3.2$*
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create a stem and leaf plot from the numbers below using the given key.…
| Stem | Leaf | |------|------| | 0 | 9 | | 1 | 3, 5, 7 | | 2 | 1, 7 | | 3 | 4, 8 |
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the old man’s words stayed with her as she drove up into the mountains.…
C. Maggie left home because she was unhappy there