Statistik
Datenanalyse, Wahrscheinlichkeitsverteilungen und Hypothesentests.
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the number of cars sold at a dealership over several weeks is given bel…
6.9
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the test scores of a geometry class are given below. 90, 75, 72, 88, 85…
258
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employee weekly salary anja $245 raz $300 natalie $325 mic $465 paul $1…
$17,507.5$
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a set of data has a mean of 12 and a standard deviation of 3. a data po…
The data point is 1.3 standard deviations away from 12.
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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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the mean of a set of credit scores is $mu = 690$ and $sigma = 14$. whic…
C. 720
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fiona recorded the number of miles she biked each day last week as show…
$\sigma^{2}=\frac{(4 - 6)^2+(7 - 6)^2+(4 - 6)^2+(10 - 6)^2+(5 - 6)^2}{5}$ (assuming population variance, and this is the correct form among the given options as the others are eit…
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a scientist collected two sample sets of snowfall data. which statistic…
standard deviation
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yuri computes the mean and standard deviation for the sample data set 1…
Yuri divided by $n = 4$ instead of $n - 1=3$ in the formula for the sample standard deviation.
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given that z_20 = -2 and z_50 = -1, which of the following do you know?…
The data point $x = 20$ is 2 standard deviations from the mean. The data point $x = 50$ is 1 standard deviation from the mean.
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michelle was afraid of bike riding after a bad crash. it was very coura…
D. brave
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a data set has the following characteristics: mean: 4.9 median: 6 mode:…
$z_1=-1.95$ $z_5 = 0.05$ $z_{6.5}=0.8$
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read the sentence. every day at practice, alan strives to swim faster t…
C. works hard
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jordans confidence grew after talking with his coach and completing a h…
A. a trust in oneself
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a contractor records the areas, in square feet, of a small sample of ho…
Variance: $84000$ Standard deviation: $290$
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a set of data has a high - value outlier. how do you expect the standar…
When a high - value outlier is removed, the standard deviation is expected to decrease. If there was a low - value outlier instead and it was removed, the standard deviation would…
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a contractor records the areas, in square feet, of several houses in a …
The data is a sample and is expected to be more dispersed from the mean.
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calculate standard deviation a contractor records the areas, in square …
$s=\sqrt{\frac{(x_1 - \bar{x})^2+(x_2 - \bar{x})^2+\cdots+(x_n - \bar{x})^2}{n - 1}}$
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a contractor records all of the bedroom areas, in square feet, of a fiv…
Variance: 864 Standard deviation: 29.4
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the data set on the right represents the population. which formula shou…
$59.10$
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a teacher recorded all of his students’ grades on the final exam as: 62…
C
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a company that manufactures small canoes has a fixed cost of $22,000. i…
A. the money coming in equals the money going out
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rainforest data: mean = 7 $sigma^{2}=12.405$ $sigmaapprox3.522$ when us…
Yes because $z_{11.7}<3$.
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a manufacturer tests 4 different light bulbs from a production line. th…
$0.000130$
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the bar graph shows the number of fatal vehicle crashes per 100 million…
# Explanation: ## Step1: Set up the equation We are given the formula $N = 0.014x^{2}-1.1x + 28.24$ and we want to find $x$ when $N = 3$. So we set up the quadratic - equation $0.…
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rainforest data: mean = 7 $sigma^{2}=12.405$ $sigmaapprox3.522$ when us…
$1.3$
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rainforest data: mean = 7 $sigma^{2}=12.405$ $sigmaapprox3.522$ when us…
$x = 11.7$; $\mu = 7$
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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 th…
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describe why the horizontal line test is an effective way to determine …
Each output of a function must have exactly **one input** for the function to be one - to - one. If any horizontal line crosses the graph of a function more than once, that means …
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10. resting heart rates for adult athletes, in beats per minute, follow…
B. 0.7
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9. the daily commute times for employees at a large law firm are normal…
C. Helen
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select the quotation from the story that most strongly suggests that th…
"From now on, let's try to save as much energy as possible," he said.
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that sounds good to me, said his mom. that night, nash used the solar -…
A. A well - meaning idea can be taken too far.
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directions: set up your paper in mla format. watch the videos using the…
1. Without watching the video, it's unclear what "1984" is a rearrangement of. 2. The concept of the novel developed from Orwell's observations and concerns about totalitarianism.…
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8. at one major hospital in a large city, administrators keep track of …
C. Isaac’s wait time is at about the $10^{th}$ percentile, and this means that only about 10% of patients waited for less time than Isaac.
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7. the amount of caffeine consumed daily by college students follows a …
E. Colby consumes about 138 milligrams more caffeine than the average college student.
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6. the distribution of ticket prices for concerts in a large city is ap…
A. Tami
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in math class, mr. carico handed the students their graded tests. nicol…
The main theme is about academic struggles and the interaction between friends regarding academic - help.
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4. departure delays for flights leaving a major airport follow a normal…
D. The newspaper article is incorrect because the actual percentage of flights delayed by more than 30 minutes is about 4% or 5%.
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3. the caffeine content of large, brewed coffees sold at a local coffee…
A. Phoebe's coffee contains approximately 295 milligrams of caffeine.
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2. the battery life of a new smartphone model is normally distributed, …
12.6, 17.8
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1. the daily viewing times for a popular video streaming platform are n…
C. 62%
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sabine records the daily heights of a random sample of bamboo stalks, i…
Variance: 4.5 Standard deviation: 2.12
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question 10 1.5 pts brain damage may produce selective language deficit…
D. phonology, syntax, or semantics, respectively.
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angela just learned the processes of using the distributive property. s…
multiply
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select the correct answer from each drop - down menu. to allocate scarc…
First drop - down menu: price rationing Second drop - down menu (not shown in options but conceptually): are willing and able to pay the market price
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pseudo is a word root that means \false.\ which is the best definition …
fictional names
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principal prin-ci-pal prin-suh-puh l middle english, from latin princip…
first, highest in rank or importance
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on the news, a reporter says, \though the bill passed the upper house, …
B. The Senate passed the bill, but the House of Representatives rejected it.
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-ess = \female\ -less = \without\ -ous = \full of\ based on the list of…
humorous
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on = \time\ om = \color\ a = \change, beyond\ er = \measure\ no = \one\…
consisting of only one color
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directions: look at the prefixes, suffixes, and their meanings. complet…
1. runner 2. impossible 3. unlock 4. cloudy 5. invisible 6. softly
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question 4 the word \deciduous\ means: able to be shed replacing anothe…
able to be shed
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a person is working in the purchasing department of an appliance retail…
D. The slope is $-\frac{5}{4}$. This means for every purchase of 4 washers, 5 fewer dryers can be purchased.
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a person is working in the purchasing department of an appliance retail…
A. The maximum number of dryers that the person can purchase is 40 D. The slope is $-\frac{5}{4}$. This means for every purchase of 4 washers, 5 fewer dryers can be purchased.
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a person is working in the purchasing department of an appliance retail…
A. The horizontal intercept is $(32,0)$. A. The maximum number of washers that the person can purchase is 32.
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the noon temperatures (in fahrenheit) for two cities were recorded over…
(a) City A (b) City B (c) City A (d) City B
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a consultant for a major computer company receives $2250 per month as a…
a. $f(x)=2250$ d. Slope of the line: $m = 0$. The practical meaning of the slope is that the amount of money the consultant receives does not depend on the number of hours worked.…
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question 9 of 10 by visual inspection, determine the best - fitting reg…
C. Linear
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question 8 of 10 by visual inspection, determine the best - fitting reg…
A. Exponential
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question 7 of 10 by visual inspection, determine the best - fitting reg…
A. Quadratic
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question 6 of 10 the number of cases of a new disease can be modeled by…
D. 96
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question 5 of 10 what is the exponential regression equation that fits …
C. $y = 3.02\cdot2.26^{x}$
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question 3 of 10 what is the quadratic regression equation that fits th…
B. $y = 2.09x^{2}+0.33x + 3.06$
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question 2 of 10 this table shows the rainfall (in centimeters) for a c…
C. No, because you can't have a negative amount of rainfall.
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question 1 of 10 which regression equation best fits these data? | x | …
D. \(y=-0.58x^{2}-0.43x + 15.75\)
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question 13 of 13 by visual inspection, determine the best - fitting re…
A. Quadratic
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two science classes with the same number of students took a final exam.…
(a) Class A (b) Class A (c) Class B (d) Class B
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question 12 of 13 use a calculator to find the correlation coefficient …
D. -0.985
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analyze craft and structure development of ideas: structure the declara…
1. Answers will vary based on the content of paragraph 1. 2. Answers will vary based on the content of paragraph 2. 3. Answers will vary based on the chosen paragraphs from 3 - 11…
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question 11 of 13 which of the following exponential regression equatio…
A. $y = 10.84\cdot1.77^{x}$
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question 10 of 13 given the line of best fit for a set of data points w…
D. -4.5
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question 9 of 13 which of the following r - values represents the stron…
B. 0.92
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question 8 of 13 the table below represents the closing prices of stock…
B. $y=-0.223x + 24.081$
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question 7 of 13 which of the following quadratic regression equations …
C. \(y = 3.11x^{2}+1.20x + 3.64\)
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question 5 of 13 there is a strong positive linear correlation between …
D. No. Any number of factors could also be affecting the number of peaches produced.
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9.3. explain the emergence of the \era of good feelings\ and the factor…
Pro - slavery members of the Missouri constitutional convention attempted to ban free Blacks and mulattoes from living in Missouri.
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9.2. summarize the issues and ideas that promoted sectional conflict du…
This quotation represents Clay's desire to tie together the nation's diverse regions through the American System.
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question 23 (mandatory) (4 points) giottos virgin and child enthroned d…
Question 23: a) exhibits greater special consistency and depth Question 24: b) Philosophy
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according to a survey, 10% of americans are afraid to fly. suppose 1,10…
a. $0.1335$ b. $0.0004$ c. $0.0132$
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question 10 (mandatory) (4 points) donatellos david stands in contrappo…
C. one leg perfectly straight and one knee bent
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labor force participation among women rose in the united states between…
1. $0.7129$ 2. $0.9606$ 3. The probability increased since the sample size increased and the sample proportions are more concentrated near the true labor - force participation rat…
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assume 85% of people actually show up for their flight on time. because…
a. $p = 0.85$, $n = 217$ b. Yes, $np(1 - p)=27.7>10$ c. $0.0188$ d. $0.0062$, is, $<$
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making a compromise can mean doing something that you would rather not …
I suggested we meet at 3 pm, but Derek suggested 5 pm. We agreed on 4 pm.
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because np(1 - p) = 19.08 which is < 10. round to one decimal place. c)…
c) $P(\hat{p}\leq0.09)=0.0885$ d) Since $P(\hat{p}\leq0.08)=0.0367$ which is $<0.05$, 8% is an unusually low percentage of college students that are left - handed in a sample of 2…
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which of the following scatterplots represents the data shown below? (1…
C.
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question 2 of 13 a company performs linear regressions to compare data …
A. Neither data set is likely to be linear.
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question 1 of 13 for a series of concrete structures, a civil engineer …
A. For each bolt used, the number of cracks decreased by an average of $\frac{1}{2}$.
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a) identify the individual, variable, random variable x and the random …
b) Yes, because $np(1 - p)=19.08>10$ c) $P(\hat{p}\leq0.09) = 0.3156$ d) 8% is not an unusually low percentage of college students that are left - handed in a sample of 212 since …
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b) can we say that the sampling distribution of \\(\\hat{p}\\) is appro…
b) (Assuming values as above) If we assume $p = 0.1$ and $n = 212$, $np(1 - p)=19.1$, which is $\geq10$ (contradicting the "No" in the problem, but for the sake of filling blanks …
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identify the individual, variable, random variable x and the random var…
- The individual: a randomly selected college student - The variable: whether or not a randomly selected college student is left - handed - $X$: the number of 212 randomly selecte…
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a) identify the individual, variable, random variable x and the random …
a) - The individual: A single college student - The variable: Whether a college student is left - handed or not - $X$: The number of left - handed college students in the sample -…
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assume 11% of the population is left - handed. assume this p random sam…
$p = 0.11$ $n=212$ If 5300 is population size, $N = 5300$
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assume 11% of the population is left - handed. assume this percentage i…
a) - The individual: A college student - The variable: Whether the student is left - handed or not - $X$: The number of left - handed students in the sample of 212 college student…
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aud = \hear\ auto = \self\ mob = \move\ based on the list of word roots…
automobile
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suppose 7% of student veterans at a college are involved in sports. a r…
Mean of sampling distribution: 0.07 Standard error: 0.022 Probability: 0.9998 Is this result unusual? No, there is at least a 5% chance of this happening by random variation.
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based on past experience, a bank believes that 8% of the people who rec…
mean = 0.080 standard deviation = 0.019 b) 0.1469
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suppose the true proportion of voters in the county who support a resta…
Mean: $0.52$ Standard Error: $0.039$
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the sampling distribution of the sample proportion describes how the sa…
a. Mean: $0.44$, Standard deviation: $0.0496$ b. Mean: $0.44$, Standard deviation: $0.0222$ c. decreases
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section 8.2 homework score: 1/11 answered: 1/11 question 2 the symbol $…
True