Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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carry out the following calculation and report the answer using the pro…
48.15 (corresponding to the option "48.15")
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when 2.3390 × 10⁸ is correctly rounded to three significant figures, th…
\(2.34\times10^{8}\) (the option corresponding to this is the one labeled "2.34 × 10⁸")
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when $1.250 \\times 10^{-2}$ is correctly converted to its standard for…
0.01250
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the table below shows the educational attainment of a countrys populati…
$\frac{40}{159}$
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the table shows the number, expressed in millions, of citizens who move…
\(0.01\)
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the table shows the number, expressed in millions, of citizens who move…
\(0.62\)
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the table shows the distribution, by age and gender, of the 31.7 millio…
0.15
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the table shows the distribution, by age and gender, of the 29.7 millio…
\(0.47\)
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a single die is rolled twice. the 36 equally - likely outcomes are show…
\(0\)
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a single die is rolled twice. the 36 equally - likely outcomes are show…
\(\frac{1}{18}\)
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a fair coin is tossed two times in succession. the set of equally likel…
$\frac{1}{2}$
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a fair coin is tossed two times in succession. the set of equally likel…
\(\frac{1}{4}\)
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you are dealt one card from a standard 52 - card deck. find the probabi…
\(\frac{2}{13}\)
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a 12 - sided die is rolled. the set of equally likely outcomes is {1,2,…
\(0\)
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a 12 - sided die is rolled. the set of equally likely outcomes is {1,2,…
\(\frac{1}{6}\)
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a 12 - sided die is rolled. the set of equally likely outcomes is {1,2,…
\(\frac{5}{6}\)
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a 10 - sided die is rolled. find the probability of rolling an even num…
\(\frac{1}{2}\)
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without actually solving the problem, choose the correct solution by de…
A. 70 dimes; 20 quarters
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a 12 - sided die is rolled. the set of equally likely outcomes is {1,2,…
\(\frac{1}{12}\)
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find the product and write it in lowest terms.\\(\frac{18}{5} cdot \fra…
\(\frac{21}{10}\)
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multiply and simplify. \\frac{1}{18} \\cdot \\frac{6}{17} \\frac{1}{18}…
\(\frac{1}{51}\)
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12. $log_{3} 9 = log_{2} 2$ d. $log_{3} 36$ in exercises 13–20, expand …
13. $2\log_6 2 + \log_6 x$ 14. $\log_8 3 + \log_8 x$ 15. $1 + 5\log x$ 16. $\ln 3 + 4\ln x$ 17. $\ln x - \ln 3 - \ln y$ 18. $\ln 6 + 2\ln x - \ln y$ 19. $\log_7 5 + \frac{1}{2}\lo…
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the graph above is a continuous line or curve. its domain can best be d…
an exponential function
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question the first three terms of a sequence are given. write your answ…
270
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story jaylin buys 3 bags of bagels. the store gives her 5 bagels for fr…
- In the story: The number 9 is the number of bagels in each of the 3 bags Jaylin bought. 3 bags of 9 bagels plus 5 free bagels gives $3(9)+5=32$ total bagels, which matches the s…
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lets play more umber line disc golf\! this time, the number line is div…
The sum \(\frac{8}{12}+\frac{10}{12}\) is \(\frac{18}{12}\) (or simplified to \(\frac{3}{2}\) or \(1\frac{1}{2}\)), and \(\frac{3}{2}>1\) (so Mei's disc lands at \(\frac{18}{12}\)…
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a pattern for multiplying decimals rewrite a decimal problem as fractio…
1. 2 decimal places, 0 decimal places, 2 decimal places; Product: $9.75$ 2. 1 decimal place, 0 decimal places, 1 decimal place; Product: $25.6$ 3. 1 decimal place, 2 decimal place…
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all 800 students at amayas school took a survey to help choose a new it…
240 students
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use <, >, or = to compare the following decimals. (a) 7.29 \\square 7.2…
7.29 > 7.24 ### Part (b)
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10. 28.4 + 73.2 + 221.88 = 11. 98.34 + 17.626 = 12. 191.34 + 58.177 + 2…
d. 10. 323.48 11. 115.966 12. 251.547
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question 2 (1 point) round to the nearest thousandth. 6. 0.1245 7. 7.21…
A. 6. 0.125 7. 7.220 8. 456.255
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5.1.2 exam: wrap up based on the context of the sentence, what is most …
B. Apprehensive
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4th hour (7th grade math) topic 3 assessment in game 1, emerson struck …
$\frac{112}{350} = \frac{x}{100}$
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jocelyn estimates that a piece of wood measures 5.5 cm. if it actually …
2.14%
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1. what was jacob riis’s role in exposing the conditions of new york ci…
The child dying from measles symbolized the dire health consequences of unsanitary, overcrowded tenement living conditions, representing the vulnerability of the poor (especially …
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question 2 (1 point) which number is higher? 9. 2,109.8 or 2,107.9 10. …
a. 9. 2,109.8 10. 74,846.50
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question 1 (1 point) which number is higher? 9. 2,109.8 or 2,107.9 10. …
A. 9. 2,109.8 10. 74,846.50
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question tyshawn left his house at time zero and drove to the store, wh…
Plot the following connected segments on the graph: 1. From $(0, 0)$ to $(2, 16)$ 2. From $(2, 16)$ to $(4, 16)$ 3. From $(4, 16)$ to $(6, 18)$ 4. From $(6, 18)$ to $(9, 18)$ 5. F…
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question 4 (1 point) which number is higher? 9. 2,109.8 or 2,107.9 10. …
b. 9.2,109.8; 10. 7,484.08
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(1 point) a senator wants to know what the voters of his state think of…
C. a survey containing nonresponse. ### Part (b)
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(1 point) (a) archaeologists plan to examine a sample of 2-meter-square…
C. A stratified random sample. ### Part (b)
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(1 point) a choral conductor has 1481 singers in her choir, some of the…
A. 15/640 ### Part (b)
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8. identify the errors in the equation. explain what the errors is/are …
Original errors: 1. Incorrect distribution of the negative sign: $(2x+5)-(5x+4)$ was simplified to $2x+5-5x+4$ instead of $2x+5-5x-4$. 2. Incorrect distribution of $-2$: $-2(x-3)$…
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(1 point) a market research company wishes to find out whether college …
B. which brand they prefer. ### Part (b)
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what is the equation of the trend line in the scatter plot? use the two…
$y=\frac{6}{5}x-\frac{14}{5}$
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1) what is the equation of the trend line in the scatter plot? 1) use t…
$y=\frac{3}{2}x-2$
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what is the equation of the trend line in the scatter plot? use the two…
$y=\frac{6}{5}x-\frac{24}{5}$
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a trailer can pull a total of 6,000 pounds. which pair of cars can the …
The pair with cars weighing 3,927 lb and 1,904 lb (the third pair: red truck and blue car).
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49 three classes collect cans for a recycling project. their goal is to…
B. No, the total number of cans is a bit less than 700.
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(1 point) a sample of 300 dentists from seattle is taken to estimate th…
B. NON - REPRESENTATIVE? ### Second Question:
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three classes collect cans for a recycling project. their goal is to co…
# Explanation: ## Step1: Estimate each class's cans Class A: 300 (exact), Class B: 98 ≈ 100, Class C: 185 ≈ 190. ## Step2: Sum the estimates Total ≈ 300 + 100 + 190 = 590? Wait, n…
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(1 point) identify each quantity as a parameter or statistic write \par…
parameter ### Part (b)
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for each expression, estimate to decide whether the sum is closer to 40…
Closer to 400
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(1 point) the mean height of american women is 64.5 inches. suppose we …
B. parameter. ### Part (b)
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5. what is the specific operation being done in order to generate each …
a. Add 2 to the previous term b. Divide the previous term by 3
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what is the equation of the trend line in the scatter plot? use the two…
$y=\frac{1}{3}x+3$
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for each expression, estimate to decide whether the sum is closer to 80…
Closer to 800
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what is the equation of the trend line in the scatter plot? use the two…
$y=\frac{4}{9}x+2$
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the population of butterflies in a zoo exhibit is modeled by the follow…
B. The population of butterflies is decreasing at a rate of 24%.
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what is the equation of the trend line in the scatter plot? use the two…
$y = \frac{7}{5}x - \frac{21}{5}$
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for each expression, estimate to decide whether the sum is closer to 80…
Closer to 800
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a music store sells 512 guitars and 186 drums. which value is the best …
700
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4 two of the dozen eggs in a carton are cracked. about what percent of …
About 16.7% (or 17% when rounded) of the carton is cracked.
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what is the equation of the trend line in the scatter plot? use the two…
$y=\frac{2}{3}x+5$
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the function ( p(x) = 4x ) can be used to find the perimeter of a squar…
B. The perimeter of a square with side length 3.25 units is 13 units.
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first, round each number to the nearest hundred. 193 rounds to? 301 rou…
193 rounds to 200; 301 rounds to 300
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what fraction of students in the sample take dance? \\(\\frac{3}{20}\\)…
15
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all students at micahs school are required to take one fine arts class.…
$\frac{3}{20}$
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(\frac{6.94\times10^{-4}}{7.98\times10^{6}-1.00\times10^{-8}}=\boxed{qu…
\(8.70\times10^{-11}\) (or approximately \(8.7\times10^{-11}\) depending on the required precision)
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the scores of a recent test taken by 1200 students had an approximately…
Approximately 54.17 (If we follow the calculation in the calculator $\frac{1200 - 225}{18}$) or 2 (if we follow the normal distribution calculation, but there is a discrepancy. If…
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model it: place - value charts use place - value charts to show multipl…
### Completed #3 Table: | Ones | . | Tenths | Hundredths | Thousandths | Expression | |------|---|--------|------------|-------------|------------| | 0 | . | 0 | 0 | 5 | $0.005 \t…
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it is often necessary to do calculations using scientific perform each …
\(8.10\times10^{-13}\) (or \(8.1\times10^{-13}\))
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13. matching: use the following dot plots to estimate which of each of …
a. \( \sigma \approx 0.43 \) corresponds to Plot D b. \( \sigma \approx 1.22 \) corresponds to Plot A c. \( \sigma \approx 2.91 \) corresponds to Plot B d. \( \sigma \approx 4.08 …
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1. compare. 76,000 \\bigcirc 7.6\\times 10^{3}
$76,000 > 7.6 \times 10^3$
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13 matching: use the following dot plots to determine which of the foll…
To solve the problem of analyzing the effect of doubling scores on statistics (mean, median, mode, range, mean deviation, standard deviation), we follow these steps: ### Step 1: R…
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(\frac{3.14 \times 10^{6}}{(7.04 \times 10^{5})(2.68 \times 10^{-4})} =)
\(\boxed{1.66\times10^{4}}\) (or more precisely \(1.664\times10^{4}\))
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6 eddie is reading a novel for english class. he has read 173 out of 48…
About 36% of the book (or approximately 36.0% if more precision is needed)
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question 5 solve for ( x ): ( log_{2}(x + 6)=2log_{2}(x) ) ( circ ) -2 …
B. 3
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what percentage of scores falls within 3 standard deviations of the mea…
99% (Note: The correct value from the empirical rule is approximately 99.7%, and among the given options, 99.7% is the one that represents the percentage of scores within 3 standa…
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4. the new playground needed 8 tons of sand. if only 5 tons was deliver…
$0.25$ tons
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of hours they say they study on the pair of coordinate axes and then dr…
5 hours
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4. grandma bought 6.5 meters of fabric to sew some new pillows. she use…
$0.38$ meters
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what is \\(\\frac{1}{5} \\times 10\\)?
5 (Whole number: $\boldsymbol{5}$)
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which phrase means \to surf the web\ in spanish? (1 point) tomar un cur…
B. navegar en la Red
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a line of best fit was drawn to the plotted points in a data set below.…
$x=12$
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what is \\(\\frac{4}{5} \\times 10\\)?
8 (Whole number)
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14. ben rolls two number cubes. what is the probability that the sum of…
\(\frac{5}{18}\) ### Question 15
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find the z - score for 258 given a mean of 273 and a standard deviation…
-3
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carloss math teacher plots student grades on their weekly quizzes again…
5.5 hours
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in exercises 10–12, use the following information. mattias gets dressed…
\( \frac{1}{2} \) ### Question 12: Probability of No Red in Outfit
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the z - score represents...... option 1 (yellow box): the percentile th…
the amount of standard deviations a data value is above or below the mean (the option with this text, assuming the orange box has this text as per the description of the z - score…
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#49.) based on your understanding of the term \intuition\ and your know…
B. Understanding or working out the meaning by instinct
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in a factory, the weight of the concrete poured into a mold by a machin…
1106 to 1194 pounds
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a. | n | 1 | 2 | 3 | 4 | 5 | | t(n) | 150 | 120 | 90 | | | this sequenc…
### Part a. | $n$ | $t(n)$ | |-----|--------| | 1 | 150 | | 2 | 120 | | 3 | 90 | | 4 | 60 | | 5 | 30 | This sequence is **arithmetic (linear)** because the pattern is **subtractin…
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scores on a certain standardized test have a mean of 500, and a standar…
13.5%
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#46b.) what might the intended effect of the form of repetition discuss…
A. To emphasize the importance of the acts of people to combat hatred and other atrocities.
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kennedy has a part - time job at an ice skating rink selling hot cocoa.…
49
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an inequality is shown. $1.2d \\geq 24$ which list of values for $d$ wi…
D. 20, 28, 30
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angela is plowing a large field for spring planting. on the first day, …
A) 1/21
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kerry is conducting a marketing survey. she mailed 45,128 surveys, and …
C) 40%