Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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parent results not recorded. continue practising or switch user. which …
$\frac{7}{10}\times70$
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma \\geq 39\\) at th…
For the null and alternative hypotheses: A. \(H_{0}:\sigma\geq39\), \(H_{a}:\sigma\lt39\) For the test statistic (assuming \(n = 15\)): \(\approx13.714\) (If \(n\) is different, r…
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma \\geq 39\\) at th…
A. \(H_0:\sigma\geq39\), \(H_a:\sigma < 39\)
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parent results not recorded. continue practising or switch user. which …
$\frac{7}{10}\times660$
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parent results not recorded. continue practising or switch user. which …
$\frac{1}{2}\times36$
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test the claim about the population variance $\\sigma^2$ at the level o…
\(0.212\)
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the following are the distances (in miles) to the nearest airport for 1…
Minimum: \(8\) Lower quartile: \(11\) Median: \(24.5\) Upper quartile: \(32\) Maximum: \(39\) Interquartile range: \(21\)
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test the claim about the population variance $\\sigma^2$ at the level o…
\(16.92\)
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parent results not recorded. continue practising or switch user. which …
\(\frac{2}{3}\times36\)
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try again your answer is incorrect. here are yesterday’s high temperatu…
- Minimum: \(53\) - Lower quartile (\(Q_1\)): \(59.5\) - Median: \(66\) - Upper quartile (\(Q_3\)): \(72\) - Maximum: \(81\) - Interquartile range (IQR): \(12.5\)
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parent results not recorded. continue practising or switch user. which …
The most accurate estimate is $\frac{3}{4}\times92$.
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here are yesterdays high temperatures (in fahrenheit) in 13 u.s. cities…
Minimum: \( 53 \) Lower quartile: \( 58 \) Median: \( 66 \) Upper quartile: \( 72 \) Maximum: \( 81 \) Interquartile range: \( 14 \)
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parent results not recorded. continue practising or switch user. which …
\(\frac{2}{3}\times84\)
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test the claim about the population variance $\\sigma^2$ at the level o…
$H_0:\sigma^{2}=\boldsymbol{8.0}$; $H_a:\sigma^{2}<\boldsymbol{8.0}$
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the following are the ages of 11 history teachers in a school district.…
Minimum: \(27\) Lower quartile: \(28\) Median: \(38\) Upper quartile: \(52\) Maximum: \(58\) Interquartile range: \(24\)
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what does it mean to \think outside the box\? (1 point) ○ to have a clo…
C. to imagine new concepts, products, and approaches
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0 27.5 10 28.25 11 28.75 12 29.25 enter the equation for the line of be…
\(y = 0.67x + 21.53\) (or using more precise calculation, \(y \approx 0.67x + 21.53\))
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examine the worked example. then, answer each question. christopher pla…
\(\frac{42}{60}=\frac{p}{100}\); \(100\times42 = 60\times p\); \(70 = p\); \(70\)
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what does it mean to create a well - rounded adult life? (1 point) ○ yo…
D. You focus on building various skills.
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test the claim about the population variance $\\sigma^2$ at the level o…
\( H_0:\sigma^2 \geq 8.0 \) \( H_a:\sigma^2 < 8.0 \)
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma^2 = 0.55\\) at th…
B. Fail to reject \( H_0 \). There is not enough evidence at the 10% level of significance to reject the claim.
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here are the scores of 12 students on a history test. 60, 62, 63, 64, 6…
Minimum: \(60\) Lower quartile: \(63.5\) Median: \(68.5\) Upper quartile: \(85\) Maximum: \(93\) Interquartile range: \(21.5\)
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problems 1–5: fill in the blank to describe each percent increase or de…
1. \(90\) 2. \(150\) 3. \(86\) 4. \(130\) 5. \(85\)
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part a what is the meaning of pecuniary compensation as it is used in t…
- Part A: B. payment of money - Part B: A. It shows that he values his work beyond money. - Question 3: D. that he didn’t think Hilton was important until he helped
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the table shows the distribution, by age and gender, of the 29.2 millio…
0.42
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma^2 = 0.55\\) at th…
8.67, 27.59 (rounded to two decimal places)
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examine the worked example. then, answer each question. gordon is a cus…
The proportion is \(\frac{84}{175}=\frac{p}{100}\), after cross - multiplying \(100\times84 = 175\times p\), and \(p = 48\). The talking - foot magnets made up \(48\%\) of last we…
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reasoning with lines of best fit use this explore tool to investigate g…
To solve the problem, we first plot the data points \((2, 22.5)\), \((3, 23.25)\), \((4, 24.25)\), \((5, 25.25)\), \((6, 25.75)\), \((7, 26.5)\), \((8, 27)\), \((9, 27.5)\), \((10…
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which statement best explains the purpose of credit? (1 point) ○ to sco…
B. to borrow money for a purchase
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the table below shows the educational attainment of a countrys populati…
$\frac{12}{77}$
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma^2 = 0.55\\) at th…
\(10.09, 27.59\) (rounded to two decimal places)
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read the statement. taylor swift’s popularity contributed to her abilit…
C. Her re - recordings were very successful, supported by her loyal fans.
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a popular brand of pen is available in 10 colors and 3 writing tips. ho…
30
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use a \\(chi^2\\)-test to test the claim \\(sigma^2 = 0.55\\) at the \\…
The standardized test statistic is approximately \(16.26\)
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use a \\(\\chi^2\\)-test to test the claim \\(\\sigma^2 = 0.55\\) at th…
A. \(H_0:\sigma^{2}=0.55\), \(H_{a}:\sigma^{2} eq0.55\)
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find the critical value(s) and rejection region(s) for a two - tailed c…
Critical values: \(10.851, 31.410\) Rejection region: B
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20. which type of flower received a prime number of votes? 21. how many…
20. None of the listed flowers (Daffodils, Daisies, Tulips) received a prime number of votes. 21. 22
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examine the worked example. then, answer each question. mr. ivey teache…
The proportion is \(\frac{n}{90}=\frac{94}{100}\), \(100n = 94\times90\), \(n = 84.6\). The students spend \(84.6\) minutes each class on strength and conditioning.
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find the critical value(s) and rejection region(s) for a left - tailed …
Critical value: \(7.962\) Rejection region: A (the graph with the blue shaded area on the left - most part of the \(\chi^{2}\) distribution curve)
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based on the scatter plot below, which is a better prediction for x whe…
69
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based on the scatter plot below, which is a better prediction for y whe…
95
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based on the scatter plot below, which is a better prediction for y whe…
39
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when he suggested that change should be brought about \by any means nec…
promoting violence to achieve civil rights goals.
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to determine a ratio equivalent to the known ratio in this problem, sca…
\(17\)
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find the critical value(s) and rejection region(s) for a right - tailed…
Critical value: \(28.412\) Rejection region: The graph corresponding to option B (the graph where the shaded region is on the right - hand side of the chi - square distribution cu…
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find the critical value(s) and rejection region(s) for a right - tailed…
28.412
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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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to determine a ratio equivalent to the known ratio in this problem, sca…
\(\frac{25}{100}=\frac{17}{n}\), \(25n = 100\times17\), \(n = 68\)
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shows the weight and fuel efficiency for each of 21 vehicles. also show…
s: (a) decrease (b) negative (or strong negative) (c) 30 (miles per gallon, approximate value from the line of best fit at \(x = 4000\))
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where would the pauses be in the following sentence? the united states …
B. after is and ways
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to determine a ratio equivalent to the known ratio in this problem, sca…
17
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you are taking a multiple-choice test that has 8 questions. each of the…
390625
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25 total animals to determine a ratio equivalent to the known ratio in …
- Proportion: \(\frac{n}{25}=\frac{n}{25}\) (first blank \(n\), second blank \(n\), third blank \(25\)) - Cross - multiply: \(100n = 25x\) (fourth blank \(100n\), fifth blank \(25…
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which type of fruit is more expensive per pound? how do you know? weigh…
Both types of fruit have the same cost per pound (3 dollars/lb), so neither is more expensive.
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how many pauses does the following sentence contain? we also know that …
C. c. 4
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determine whether each statement is true or false. if the statement is …
C. This statement is false. "And" probabilities can be determined using the formula \(P(A \text{ and } B) = P(A) \cdot P(B)\) only if A and B are independent. Otherwise, they can …
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examine the worked example. then, answer each question. amia works as a…
- Decimal equation: \((0.68)(25) = 17\) - Fraction equation: \((\frac{68}{100})(25)=17\) - Proportion: \(\frac{68}{100}=\frac{17}{25}\)
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which type of fruit is more expensive per pound? how do you know? (tabl…
Neither type of fruit is more expensive per pound; both cost $3 per pound.
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the movement of the progress bar may be uneven because questions can be…
D. curse
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of the 40 plays attributed to a playwright, 16 are comedies, 11 are tra…
3:2
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the numbered disks shown are placed in a box and one disk is selected a…
$\frac{1}{3}$
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which is the best way to complete the text? the voyager i space probe, …
B. music and was (assuming the middle option is labeled B; if the options are in order as presented, the middle one: "music and was")
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in how many ways can a committee of three democrats and four republican…
6600
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the table displays the scores of students on a recent exam. find the me…
88.8
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find the critical value(s) and rejection region(s) for a right - tailed…
Critical value: 27.587 Rejection region: $\chi^2 > 27.587$
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the table displays the scores of students on a recent exam. find the me…
75.4
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based on the following calculator output, determine the inter - quartil…
\(22.5\)
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based on the following calculator output, determine the sample standard…
10.3
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what is the expected return on a portfolio comprised of $9,750 of stock…
12.32% (corresponding to the option 12.32%)
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frequency (number of days) 0 40-44 45-49 50-54 55-59 60-64 65-69 degree…
32
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you select a family with four children. if m represents a male child an…
$\frac{1}{4}$
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question 14 of 20 what did the term edemption\ mean to white southerner…
B. Bringing the Democratic Party and the interests of rich whites back to power
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practice: 2. interpret the slope: 3. interpret the y-intercept: hours a…
2. The slope is -8, meaning battery life decreases by 8% per hour after 7 AM. 3. The y - intercept is 100, meaning at 7 AM, battery life is 100%.
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practice: 1. which equation would be the most accurate line of best fit…
D. $y = -\frac{1}{2}x + 9$
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use the formula for ( _np_r ) to evaluate the following expression. ( _…
60
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frequency (number of days) 40-44 45-49 50-54 55-59 60-64 65-69 degrees …
31
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you are asked to name the colors in which groups of letters are printed…
the Stroop effect.
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question 5 of 20 what was the dawes act in 1887 meant to do? a. give na…
B. Destroy traditional Native American life
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the dot plot below represents the number of goals scored by the boys so…
2.5
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deltamath back to home 82 dm unit 6 data due: december 4 at 11:59 pm gr…
21
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5 use the word below in a sentence that conveys its meaning. scarce \\ˈ…
During the drought, clean water was scarce, and people had to ration it carefully.
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fill in the blank so that the resulting statement is true. the number o…
$\frac{n!}{(n-r)!}$
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some symptoms of schizophrenia are categorized as \positive\, which mea…
The correct option is: "which means that abnormal behaviors and/or thoughts are present."
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carol burnett has had many sex partners, even though she’s only 15 year…
A. Her parents are probably permissive
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answer the statistical measures and create a box and whiskers plot for …
Min: \(3\) Q1: \(4\) Med: \(8.5\) Q3: \(12\) Max: \(16\) For the box - and - whisker plot: - The left whisker starts at the minimum value (\(3\)) and ends at Q1 (\(4\)). - The lef…
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fast food, typically low in nutrition value and high in calories, now a…
The most surprising statistic is "One in three children is now overweight" because a 33% prevalence of overweight children indicates a severe public health concern affecting a lar…
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objetivo de aprendizaje: puedo utilizar los sinónimos y antónimos dentr…
1. All are adjectives meaning "beautiful/handsome" (synonyms). 2. - a. bonito - b. hermoso - c. guapo 3. - A. El suelo de losas resbaladizas los obligaba a caminar con mucha preca…
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read the following paragraph: the ocean is an important source of human…
anecdotal evidence
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answer the statistical measures and create a box and whiskers plot for …
Min: \(6\), Q1: \(8\), Med: \(12\), Q3: \(15\), Max: \(16\) For the box - and - whisker plot: - Left whisker: from \(6\) to \(8\). - Box: from \(8\) to \(15\), with a vertical lin…
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question 1 (2 points) the faa now figures the average checked bag to we…
a) 17 pounds b) 170%
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answer the statistical measures and create a box and whiskers plot for …
Min: 6, Q1: 8, Med: 12, Q3: 15, Max: 16
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identify the correlation coefficient r that is most likely to correspon…
r = 0.06
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identify the correlation coefficient r that is most likely to correspon…
\(r = 0\)
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what was true about the guards in zimbardos prison study? they all stat…
C. They quickly adapted to their role even to the point of becoming mean to the prisoners.
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identify the correlation coefficient r that is most likely to correspon…
A. r = -0.54
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identify the correlation coefficient ( r ) that is most likely to corre…
C. \(r = 0.07\)
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the shape of the distribution of the data pictured below could best be …
Normal (assuming it is an option; if the visible "Normal" option is correct, the answer is the normal distribution option)
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question 20 of 22 read the following sentence from john gardners grende…
C. The words convey an image of a mysterious, somewhat frightening place.
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identify the correlation coefficient r that is most likely to correspon…
C. \(r = 0.05\)
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identify the correlation coefficient r that is most likely to correspon…
C. \(r = -0.08\)