统计与概率
数据分析、概率分布、假设检验与统计方法。
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state whether the standardized test statistic t indicates that you shou…
B. Reject \(H_{0}\), because \(t>1.528\)
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state whether the standardized test statistic t indicates that you shou…
B. Reject $H_0$, because $t > 1.528$.
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use the confidence interval to find the margin of error and the sample …
The margin of error is $0.058$. The sample mean is $0.262$.
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answer the questions below. (a) as part of the u.s. census, the number …
(a) Mode (b) Mean (c) Median
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car survey in a survey of 2,400 people who owned a certain type of car,…
\(45\)
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state whether the standardized test statistic t indicates that you shou…
B. Reject \(H_0\), because \(t < - 1.456\).
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state whether the standardized test statistic t indicates that you shou…
D. Reject \(H_{0}\), because \(t>1.456\)
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state whether the standardized test statistic t indicates that you shou…
D. Fail to reject \(H_{0}\), because \(-1.456 < t<1.456\)
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a food truck is tracking sales for the day. these items were sold so fa…
Drag \(5\) of the top - unit (for churros) and \(3\) of the bottom - unit (for burritos) to build the diagram.
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state whether the standardized test statistic t indicates that you shou…
D. Reject \(H_0\), because \(t < - 1.456\)
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a food truck is tracking sales for the day. these items were sold so fa…
Draw 5 churro - like symbols and 3 burrito - like symbols to represent the ratio \(5:3\) of churros to burritos.
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question 20 (1 point) inductive reasoning is characterized by moving fr…
C. Specific instances to broader generalizations.
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1.3 displaying numerical data: dotplots 1. magic words here are data on…
a. The dot - plot has dots placed above the values \(2,3,4,5,6,7,8,10,11\) on the horizontal axis with the number of dots corresponding to their frequencies (\(5\) dots above \(2\…
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an employment information service claims the mean annual salary for sen…
There is not enough evidence at the \(1\%\) level of significance to reject the claim that the mean annual salary for senior - level product engineers is \(\$95000\).
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an employment information service claims the mean annual salary for sen…
The standardized test statistic $t\approx - 0.93$
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an employment information service claims the mean annual salary for sen…
The critical values are \(t_0=-2.95,2.95\). The rejection regions are \(t < - 2.95\) and \(t>2.95\), so the correct graph is C.
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an employment information service claims the mean annual salary for sen…
\(t_{0}=- 2.95,2.95\)
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1. proportional reasoning with weight (ma.7.ar.3.2) the table shows the…
Mercury: $47.5$ pounds, Venus: $81$ pounds, Saturn: $448$ pounds.
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question 14 (1 point) ethos is an appeal to: a. reason, using facts, st…
D. The writer's experience, knowledge, and integrity (ethical appeal).
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which foreign policy did president woodrow wilson advance as a means of…
moral diplomacy
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number of jobs a sociologist found that in a sample of 50 retired men, …
\( 6.2<\mu<7.4 \)
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which of these is a good reason to add pictures or graphics to a docume…
C. Images and graphics can often help convey your message better than text alone.
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for an argumentative essay, a writer should generally avoid using which…
B. Strictly moral or religious claims.
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read the paragraph. when ibram first started taking part in student cou…
- Which phrase means something similar to temporarily? for only a short time - Which phrase describes what tension feels like in a person's body? tight and uncomfortable - Which p…
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from january 2016 algebra 1 cc regents 1. solve yourself 30 a statistic…
\(234\)
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test a claim that the mean amount of lead in the air in u.s. cities is …
There is not enough evidence at the 10% level of significance to support the claim that the mean amount of lead in the air in U.S. cities is less than 0.037 microgram per cubic me…
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test a claim that the mean amount of lead in the air in u.s. cities is …
Fail to reject \(H_0\) because the standardized test statistic is not in the rejection region.
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test a claim that the mean amount of lead in the air in u.s. cities is …
\(t = 0.22\)
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claim that the mean amount of lead in the air in u.s. cities is less th…
We fail to reject the null hypothesis. So, the claim that the mean amount of lead in the air in U.S. cities is less than \(0.037\) microgram per cubic meter is not supported at th…
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fast-food bills for drive-thru customers a random sample of 49 cars in …
\(17.91<\mu<21.79\)
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test a claim that the mean amount of lead in the air in u.s. cities is …
The critical value \(t_{0}\approx - 1.29\)
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convert percents, decimals, and fractions topic: convert percents, deci…
If the test had 100 questions, you incorrectly answered 20 of them.
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determine which equation best represents the situation. explain the mea…
B. \(y = 25x+300\); \(x\) represents the number of weeks, \(y\) represents the total amount of money Larry has.
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question 6 the farmers alliance movement of the late nineteenth century…
- Question 6: farmers' cooperatives. - Question 7: Eliminating racial inequality in the United States.
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25 a survey was taken to determine whether students preferred to watch …
The student made a mistake in calculating the number of juniors who listen to music. The correct number of juniors who listen to music is \(14\) instead of \(19\).
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thought provoking the table shows the temperatures y (in degrees fahren…
The function is \(y=-5x + 162\), and the predicted temperature after \(20\) minutes is \(62^{\circ}F\)
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the movement of the progress bar may be uneven because questions can be…
to inform teenagers about both sides of the student work issue
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use this dictionary entry to answer the question. un- (prefix) not midd…
without thinking
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the movement of the progress bar may be uneven because questions can be…
educational
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from june 2025 algebra 1 regents 1.solve yourself 25 a survey was taken…
| Juniors | Seniors | Total | |---|---|---| | Watch Videos | 42 | 23 | 65 | | Listen to Music | 14 | 21 | 35 | | Total | 56 | 44 | 100 |
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a) compute the mean and standard deviation of the distribution. the mea…
The mean is \(8\) and the standard deviation is \(4\).
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a) compute the mean and standard deviation of the distribution. the mea…
b) The mean is \(16\) and the standard deviation is \(9.7\). c) The mean is \(32\) and the standard deviation is \(19.4\).
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a) compute the mean and standard deviation of the distribution. the mea…
The mean of the new distribution is \(16\) and the standard deviation is \(9.7\).
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use the following distribution to complete parts (a) through (d) below.…
\(4.85\)
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use the five numbers 19, 18, 12, 13, and 13 to complete parts a) throug…
B. If each piece of data is increased, or decreased, by \(n\), then the mean is increased, or decreased, by \(n\). The standard deviation remains the same.
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use the correct conjugation of the verb “ser” according to the subject.…
2. ES: Eres divertido/a. Translate: Tú eres divertido/a. 3. ES: ¿Cómo es él? Translate: ¿Cómo es él? (Note: The original "Cómo eres EL?" in the example is incorrect, it should be …
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question 4 what happens during the denial stage of grief? intense feeli…
Avoiding of facts and reality surrounding the death of the loved one
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9. the table shows the instant messenger abbreviations students at hill…
a. $\frac{33}{100}$ b. $\frac{67}{100}$ c. $\frac{41}{100}$
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a standard coin is flipped in order to decide how a game starts. what i…
Fraction: \( \frac{1}{2} \), Decimal: \( 0.50 \), Percentage: \( 50.00\% \)
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what is the third quartile for the scores of 90, 85, 100, 50, 45, 70, 6…
B. \(87.5\)
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your salary is the median salary in your department. how could you expr…
My salary is in the second quartile.
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a six - sided die has its sides labeled with the numbers 1 to 6. what i…
Fraction: \(\frac{2}{3}\) Decimal: \(0.67\) Percent: \(67.00\%\)
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you have been provided with the following data set: 2, 4, 6, 8, 10, 12,…
The 25th percentile is \(5\), the 50th percentile is \(9\), and the 75th percentile is \(13.5\).
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a six - sided die has its sides labeled with the numbers 1 to 6. what i…
- Fraction: \(\frac{2}{3}\) - Decimal: \(0.67\) - Percentage: \(67.00\%\)
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what measures the distance of the data value from the mean? standard de…
Z - score
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the defines measurements of position. standard deviation quartile mode …
quartile
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which of the following would be unethical? using more statistics that a…
Stretching the conclusion beyond reason in a new drug study
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the following set of marbles is placed into a bag. then, without lookin…
Fraction: \(\frac{1}{2}\) Decimal: \(0.5\) Percentage: \(50.00\%\)
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your manager is concerned with the number of sick leave employees are t…
Eliminating the outlier and reporting the mean but explaining the reason to your manager personally.
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there are 3 running backs on the smithville high football team. this ta…
On average, Bobby ran for more yards per carry than Derrick.
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a sampling error is the difference between the results and the populati…
sample
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in statistics, it is important to characterize your population and unde…
200 high school students
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the following set of marbles is placed into a bag. then, without lookin…
Fraction: \(\frac{1}{7}\), Decimal: \(0.14\), Percentage: \(14.29\%\)
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consider the following data set: 10, 12, 11, 13, 14, 12, 13, 14, 13, an…
12.4
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a baseball player has been able to hit 2 of the last 7 pitches thrown a…
18
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read this text. golfer nancy lopez, a twenty - one - year - old rookie,…
yes
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the graph shows the amount of savings over time in elianas account. lan…
B. Eliana saves at a greater rate because her unit rate of \(37\) per week is greater than Lana's unit rate of \(35\) per week.
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24. write each word and what it means: dividend → divisor → quotient →
- **Dividend**: The number being divided. - **Divisor**: The number by which the dividend is divided. - **Quotient**: The result of the division.
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assume that a simple random sample has been selected from a normally di…
A. There is strong evidence that the mean is less than 1000 hic, but one of the booster seats has a measurement that is greater than 1000 hic.
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read the excerpt from flannery oconnors the life you save may be your o…
Getting what you want may not make you happy.
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how could semantics be defined? a. as a set of rules that studies how w…
B. as a set of rules that is concerned with understanding the meaning of words
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read the passage and then answer the question. the roaring twenties was…
made worse
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determine word meanings using context clues 1 - instruction - level e w…
long hole dug into the earth
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based on the scatter plot below, which is a better prediction for y whe…
\(3\)
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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a six - sided die with sides labeled 1 through 6 will be rolled once. e…
\(\frac{2}{3}\)
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what is the equation of the trend line in the scatter plot? use the two…
$y = \frac{5}{6}x$
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mending wall by robert frost something there is that doesnt love a wall…
He is stubborn.
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a survey stopped men and women at random to ask them where they purchas…
| |Store|Online|Total| |---|---|---|---| |Women|34|5|39| |Men|39|16|55| |Total|73|21|94|
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data was collected for a sample of organic snacks. the amount of sugar …
\(39\)
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you are given the sample mean and the population standard deviation. us…
A. You can be 90% confident that the population mean number of tornadoes is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval.
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a random sample of students was surveyed and asked to list their grade …
\(53\%\)
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an official for a regional baseball league examines attendance data for…
2 losses, 15.2 thousand fans
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graduation rate is one measure used to compare colleges in national pub…
The correlation would stay the same.
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in a random sample of 8 cell phones, the mean full retail price was $61…
The t - value \(t\approx2.77\). Since \(t_{0.005,7} = 3.499\) (two - tailed, \(\alpha=0.01\)), \(|t|=2.77<3.499\), so the t - value does fall between \(-t_{0.005}\) and \(t_{0.005…
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let p be the population proportion for the following condition. find th…
The point estimate for \( p(\hat{p}) \) is \( 0.174 \) and the point estimate for \( q(\hat{q}) \) is \( 0.826 \)
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translate the statement into a confidence interval. approximate the lev…
The confidence interval for the proportion is $(0.641,0.719)$. The interval is a $99.4\%$ confidence interval.
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5. make a residual plot for the linear model and the data set it repres…
a. A strong negative linear relationship. b. A strong positive linear relationship.
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listed below are the lead concentrations (in μg/g) measured in differen…
\(-1.46\)
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elena collects data to investigate the relationship between the number …
D. \(0.9\)
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test the claim about the difference between two population means \\( \\…
\(P = 0.023\)
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the graph shows the distance a microcar travels at its top speed over t…
The graph shows a straight line that passes through the origin. That means the relationship is proportional.
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use the hypothesis testing: identify null and alternative hypotheses fl…
D. \(\mu> 0.002\)
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5. two tickets to an ice skating performance costs $36. for five ticket…
The number of tickets and the cost have a proportional relationship. The constant of proportionality is \(18\). It means that each ticket costs \(\$18\).
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a formal hypothesis test is to be conducted to test the claim that the …
A. No. Hypothesis tests can only find sufficient evidence to support a claim when the claim does not contain equality.
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from january 2015 algebra 1 regents 1.solve yourself 26 the school news…
\(25\%\)
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the washingtons buy a studio apartment for $240,000. they pay a down pa…
The down - payment is \(25\%\). The number of employees who worked more than three years is \(45\). Olivia's commission is \(\$288\).
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which of the following is a visual representation of the distribution o…
Histogram
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question 1 1 pts which chart is used to monitor process stability over …
Control Chart
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read this passage: the planet mars, i scarcely need remind the reader, …
A. To show that the narrator is well educated, which adds a sense of credibility to the story