Statistik
Datenanalyse, Wahrscheinlichkeitsverteilungen und Hypothesentests.
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daily high temperatures and bottled water sales daily high temperatures…
A. graph A (assuming the left graph is labeled as graph A)
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how do the graphs compare? ○ they both have a positive correlation, but…
They both have a positive correlation, but Graph 2 has a stronger association.
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based on trend line on the graph, what is the expected test score for a…
40 (the option corresponding to 40, so if the options are labeled as, say, C. 40, but in the given options, the option with 40 is one of them. So the answer is the option with 40,…
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based on the graph, which is the best prediction of the height of a stu…
143 cm
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which statement is true about the association of the data sets? both se…
Both sets have positive correlation.
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what relationship exists between the daily high temperature and bottled…
B. a positive correlation
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question stella is a high school basketball player. in a particular gam…
The number of free throws \( x = 6 \) and the number of two - point shots \( y = 3 \).
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question 14 5 pts a method of distributing that uses a modified standar…
A. Jefferson method
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analyzing data sets marco thinks the total number of runs a team scores…
Yes, I agree with Marco. Total runs reflect a team’s overall offensive production (including all ways to score, like singles, doubles, and home runs), while home runs are just one…
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compare these data sets. the equation of the trend line is listed below…
B. Both sets have positive correlation. E. The Home Runs set has a greater rate of change than the Runs set. (Note: Assuming options are labeled as A - E with A: Both sets have ne…
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writing the equation of the trend line enter values for x and y in the …
$y = 0.15x - 23.21$
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writing the equation of the trend line enter values for x and y in the …
# Explanation: ## Step1: Analyze the relationship between R (runs) and W (wins) Looking at the data, as R (runs) increase, does W (wins) increase or decrease? Let's check a few po…
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question a law firm is going to designate associates and partners to a …
The number of associates \( x = 3 \) and the number of partners \( y = 2 \). So the solution to the system is \( x = 3 \), \( y = 2 \).
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enter values for x and y in the table to plot points in the graph. use …
# Explanation: ## Step1: Identify Variables Let \( x \) be Runs (R) and \( y \) be Wins (W). The data points are: \((808, 93)\), \((768, 94)\), \((655, 66)\), \((684, 81)\), \((63…
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samir works as a salesperson at an electronics store and sells phones a…
The number of phones sold \( x = 15 \) and the number of accessories sold \( y = 24 \).
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take quiz exit number of voters 7 7 8 5 1st choice (4 points) a c d b 2…
A. B, C, A, D
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question 5 5 pts our mathematicians deciding on a conference location f…
Tacoma (with 85 votes, the highest among all cities)
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a five - member evaluating committee votes by approval voting on 10 fac…
B. B
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question a town has a population of 7000 and grows at 4% every year. wh…
11655
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the probability of randomly selecting a name starting with the letter t…
A. neither unlikely nor likely
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duke has a spinner that is divided into six equal - sized sections. eac…
A. \(\frac{1}{5}\)
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note: assume that the ages of undergraduate students at a community col…
[64] C) 61.7% [65] A) 1.07% [66] B) 6.68% [67] C) 93.32% [68] B) 6.68% [59] A) 30.85% [60] D) 69.15% [61] B) 15.87% [62] C) 84.13% [63] C) 61.7%
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a contractor needs to buy nails to build a house. the nails come in sma…
There were 7 small boxes purchased and 4 large boxes purchased.
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$\\mu = n \\bullet p$ #42 what is the variance (var) for the number of …
[44] C. Binomial [45] B. 20% [46] A. 80% [47] C. 3 [48] E. None of these
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consider the following probability distribution table for checking a ra…
C. 1.00
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#34 what is the correct formula to calculate the population mean (μ) of…
E. $\mu = \sum [X \cdot P(X)]$
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in a survey, 10 people were asked how much they spent on their childs l…
\(34.0\pm4.5\) For the interpretation: We are \(98\%\) confident that the true mean amount of money spent on a child's last birthday gift by all people (the population) is between…
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if n=17, \\(\\bar{x}\\)=41, and s=9, find the margin of error at a 80% …
\( 2.92 \)
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you measure 23 textbooks weights, and find they have a mean weight of 4…
\(39.42 < \mu < 50.59\)
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sorted data set: 3 5 5 6 7 7 7 7 8 8 9 9 10 #24 what is the first quart…
A. 5.5, C. 7.0, D. 8.5, C. 3.0, C. 3.667, B. 1.826
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a company produces steel rods. the lengths of the steel rods are normal…
$0.9656$
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note: the following questions pertain to the set of 13 quiz scores belo…
C. 7 C. 7 C. 7 B. 7 B. 6.5
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a company produces steel rods. the lengths of the steel rods are normal…
\( 0.9656 \)
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#16 according to the empirical rule, what percentage of data values wou…
#16: B. 68.0% #17: D. 95.0% #18: E. 99.7%
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#12 what is the least reliable sampling method to obtain an unbiased sa…
D. Convenience sampling C. Pie chart E. Ogive E. Both (C) & (D)
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#8 when grouping raw data values into a frequency distribution table, w…
C. From 5 to 10 rows E. Your cumulative GPA D. Your major curriculum E. Simple random sampling
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#4 which of the following best defines the meaning of the term: \statis…
C. A numerical measurement (e.g. mean) calculated from a sample. E. None of the above correctly defines the meaning of this statistical term. E. None of the above correctly define…
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#1 which of the following best defines the meaning of the term: \popula…
A. An entire group of people, objects, or entities of interest to you. ### Question #2
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test the claim about the population mean \\( \\mu \\) at the level of s…
The P - value is approximately $\boxed{0.551}$ (rounded to three decimal places).
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tennis and golf: following are the ages of the winners of the mens wimb…
### Ages of Wimbledon Winners Stem - and - Leaf Plot (Back - to - Back, Split Stem) #### Step 1: Identify the stems The ages range from 17 to 35. So the stems will be 1, 2, 3. But…
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directions: essay answer the following questions on a separate sheet of…
Pittsburgh’s story shows economic development and population distribution are interdependent. Initially, the steel industry (economic growth) attracted immigrants, boosting popula…
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assume that a sample is used to estimate a population mean \\( \\mu \\)…
\( 8.4 \)
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suppose you use simple random sampling to select and measure 40 backpac…
56.00 $\pm$ 3.04
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(a) construct back-to-back split stem-and-leaf plots for these data set…
To solve the back - to - back split stem - and - leaf plot construction for Wimbledon and Masters, we analyze the data: ### Wimbledon Data Analysis - **Stem 1 (first occurrence, l…
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part 2 of 5 step 1. hypotheses set-up: $h_0:$ $mu_1$-$mu_2$ = 0 , where…
To solve this hypothesis testing problem, we need the sample data (means, standard deviations, sample sizes) for the two populations. Since the data is not provided in the questio…
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active listening means ______. you are listening for people who are bei…
The correct option is the second one: "you are fully concentrating on what is being said rather than just passively 'hearing' the message of the speaker"
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3. the length of ms. chen’s pencil is x inches. the length of mr. river…
Ecuación: \( y = x + 3 \) Tabla (ejemplo): | \( x \) | \( y \) | |--------|--------| | 2 | 5 | | 5 | 8 | | 8 | 11 | Gráfica: Línea que pasa por los puntos (2,5), (5,8), (8,11) (y …
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20. a gardening club has 21 members, of which 13 are males and the rest…
\(\frac{8}{21}\)
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10 a math club has 25 members, of which 11 are males and the rest are f…
The ratio of males to all club members is \( \boldsymbol{\frac{11}{25}} \) (or 11:25).
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homework: simplify the ratios. 13. 12: 36 = ____:____ 14. 45: 27 = ____…
13. \(1:3\) 14. \(5:3\) 15. \(7:9\) 16. \(1:2\) 17. \(7:3\) 18. \(8:1\)
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find the next two terms in this sequence. 20, 32, 42, 50, 56, ?,
60, 62
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11. gavin has nickels, dimes, and quarters in the ratio of 8 : 1 : 2. i…
72
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describe the rate of change for this relationship. the amount of bluebe…
6 ounces
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blueberries. now, he is using them to make blueberry scones. there is a…
The amount of blueberries left decreases by 6.25 ounces per batch of scones.
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on a data sheet you can find the value of β by looking up the value.
hFE (or sometimes \( h_{FE} \))
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12. the ratio of girls to boys in a chess club was 5 : 4. there are 32 …
There were 40 girls in the club.
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12. the ratio of girls to boys in a chess club was 5 : 4. there are 32 …
There were 40 girls in the club.
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8. a group of preschoolers has 8 boys and 24 girls. what is the ratio o…
\( 3:4 \) (or \( \frac{3}{4} \)) ### Problem 9:
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6. a group of preschoolers has 8 boys and 24 girls. what is the ratio o…
\( 3:4 \) ### Problem 9
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admission to a zoo costs $10 for adults and $6 for children. a group of…
Number of Adults: \( 12 \) Number of Children: \( 17 \)
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blueberries. now, he is using them to make blueberry scones. (1) there …
The amount of blueberries left decreases by 6.25 ounces per batch of scones. (So the first dropdown is "decreases", the second is "6.25 ounces")
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10. a pattern has 4 triangles to every 12 squares. what is the ratio of…
The ratio of triangles to all shapes is \(\frac{1}{4}\) (or 1:4).
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changed during his dive. there is a linear relationship between the tim…
The amount of air in Barry's tank decreased by \( 1\frac{1}{4} \) cubic feet per minute.
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solve. if the problem asks for a ratio, give it in simplified form. 7 l…
$30 ### Part b
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Question was provided via image upload.
The amount of air in Barry's tank decreased by 1.25 cubic feet per minute (or similar, but based on the dropdown, the answer is "decreased" and "20 cubic feet" per minute – though…
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1) barry went scuba diving on his family vacation. the amount of air in…
The amount of air in Barry's tank decreases by \( 1.25 \) cubic feet per minute.
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there is a linear relationship between the number of bracelets laura ma…
The amount of string left decreases by 0.8 meters per bracelet.
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same length. the amount of string laura has left depends on how many br…
The amount of string left decreases by 0.8 meters per bracelet.
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laura bought a roll of string to make friendship bracelets. she makes e…
The amount of string left \(\boldsymbol{\text{decreases}}\) by \(\boldsymbol{0.8}\) (or \(\boldsymbol{\frac{4}{5}}\)) meters per bracelet.
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both germany and the allies used airplanes primarily for reconnaissance…
D. "to gain information."
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this graph shows how the amount of dough jaden has prepared is related …
1.6
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tell whether the two rates form a proportion. 15. 7 inches in 9 hours; …
Yes ### Problem 16: 12 players from 21 teams; 15 players from 24 teams
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question 24 find the sum \\(\\sum_{n=81}^{140} 3n =\\) question help: m…
\(19890\)
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part a — multiple choice choose the best answer. 1. workplace rights ex…
C. Protect both employees and employers ### Question 2
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part a — multiple choice choose the best answer. 1. workplace rights ex…
C. Protect both employees and employers ### Question 2
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tell whether the ratios form a proportion. 5. \\(\\frac{1}{3}, \\frac{7…
Yes, the ratios \(\frac{1}{3}\) and \(\frac{7}{21}\) form a proportion.
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there are four scatter plots with correlation coefficients r = 0.4, r =…
The bottom - left graph (the third graph, first in the bottom row) corresponds to \( r=-1 \) (if we correct the earlier mis - analysis, as it shows a perfect negative linear relat…
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there are four scatter plots with correlation coefficients r = 0, r = -…
The graph with \( r=-0.9 \) is the bottom - right scatter plot (the fourth graph in the grid, considering top - left, top - right, bottom - left, bottom - right order).
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solve for x: log(x) + log(x + 30) = 3 x = you may enter the exact value…
\(20\)
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find the product. list the units. 7. $8\\ \\mathrm{h} \\times \\frac{\\…
\(\$72\) ### Problem 8:
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price fixing means that a company has _____________. a. joined with oth…
A. joined with other companies to agree that all of them will set the price high
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a certain forest covers an area of 3600 km². suppose that each year thi…
2132
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try again one of the digits in your answer is wrong. check your work ca…
633612
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the term is used to describe the decreasing nature of a geometric seque…
exponential decay (or geometric decay)
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a city has a population of 380,000 people. suppose that each year the p…
633878
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pierre works at a tutoring center on the weekends. at the center, they …
B. 0.51 meter
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antarctica is the worlds coldest continent. in winter, temperatures can…
B. untouched (assuming the second option is labeled B; if options are unlabeled, "The second option (untouched)")
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the atacama desert in chile is the oldest desert on earth. it is also o…
lifeless
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above are two different models of the same rectangular hallway. if the …
A. 36 cm
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writing andrew plans to build a tree house that is \\(\\frac{1}{2}\\) t…
28
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writing andrew plans to build a tree house that is \\(\\frac{1}{2}\\) t…
The inequality is $\frac{1}{2}x \geq 14$, the solution is $x \geq 28$, and Cynthia's tree house is larger because Andrew's area is a fraction (1/2) of Cynthia's, so Cynthia's area…
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the general form for the nth term of a sequence is $a_{n} = a_{1} cdot …
geometric
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Question was provided via image upload.
The error is assuming any linear graph shows direct variation. Direct variation graphs (lines) must pass through the origin \((0,0)\). This graph has a \( y \)-intercept of \( 1 \…
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1. 4/5 x 3/10 your answer 2. 4/5 x 2/3 your answer 3. 3/4 x 1/3 your an…
$\frac{6}{25}$ ### Problem 2:
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grade math-karner-5; mathxl for school: practice & problem solving5.5.p…
3
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teks 7.4d at a flower shop, the ratio of roses to lilies to tulips in a…
Number of roses: 30 Total number of flowers: 60
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teks 7.4d at a flower shop, the ratio of roses to lilies to tulips in a…
30 #### How many flowers are in the bouquet in total?
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select the time, to the nearest minute shown on the clock. 1:02 1:10 2:…
2:01 (the option labeled "2:01")
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what is the range of the function? height (meters) time (seconds)
\( 0\leq y\leq10 \)
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examine the fraction below. use multiplication determine an equivalent …
For \(\frac{3}{7}=\frac{?}{14}\), the answer is \(6\); for \(\frac{2}{6}=\frac{8}{?}\), the answer is \(24\).