Statistik
Datenanalyse, Wahrscheinlichkeitsverteilungen und Hypothesentests.
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fill in the blank to complete the statement. if we reject the null hypo…
I
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describe the two types of errors possible in a hypothesis test decision…
A type I error occurs if the null hypothesis is rejected when it is true. A type II error occurs if the null hypothesis is not rejected when it is false.
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what are the two decisions that you can make from performing a hypothes…
C. fail to reject the null hypothesis, G. reject the null hypothesis
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base your answers to questions 15 and 16 on the 19th century irish song…
15. D. failure of the potato crop 16. B. mass migration of Irish people to North America 17. B. Environmental conditions often cause people to migrate.
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in a random sample of 64 audited estate tax returns, it was determined …
C. One can be \(90\%\) confident that the mean additional tax owed is between \(\$2913\) and \(\$3943\)
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list all the elements of the sample space for the following experiment:…
B. (1, H), (2, H), (3, H), (4, H), (1, T), (2, T), (3, T), (4, T)
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examine the following table. does this table represent a probability di…
C. No, because the sum of the probabilities is more than one.
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consider the following experiment: rolling a die. what is the sample sp…
D. 6 possible outcomes; \(P(1\ or\ 2)=\frac{1}{3}\)
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a. the sample mean, sample size, sample standard deviation, and confide…
a. The \( 98\% \) confidence interval about \( \mu \) is \( 22.375 \) to \( 25.625 \) b. The margin of error found by using the upper bound and the lower bound is \( E = 1.625 \) …
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suppose you flip a penny and a dime. use the following table to display…
d. \(P(2\ heads)=\frac{1}{4}\)
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the boxplot below displays the arm spans for 44 students. which of the …
143, 162, 168, 180, 202 (esto corresponde a la opción con estos valores)
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find the margin of error for a 95% confidence interval for estimating t…
C. The larger sample size decreases the margin of error.
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find the margin of error for a 95% confidence interval for estimating t…
(i) \(9.80\) (ii) \(4.90\) The effect of the sample size: As the sample size increases, the margin of error decreases.
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brand b which brand of granola typically weighs more? brand a bags typi…
Brand A bags typically weigh more because the median of brand A is higher than that of brand B.
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find the margin of error for a 95% confidence interval for estimating t…
\(9.80\)
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the stemplot below displays the grades (out of 30) that 26 students rec…
There are no outliers.
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a data set includes 109 body temperatures of healthy adult humans havin…
\(98.047^{\circ}F<\mu<98.353^{\circ}F\)
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the parallel boxplots below display the quiz grades (out of 30) for two…
Class 2 performed better because their median score is higher than the median score for class 1.
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the boxplot displays the arm spans for 44 students. which of the follow…
# Explicaciones breves: - **Outliers**: En un diagrama de caja, los outliers se representan como puntos individuales fuera de los bigotes. En este diagrama, no hay puntos aislados…
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a data set includes 109 body temperatures of healthy adult humans havin…
\(98.047^{\circ}F<\mu<98.353^{\circ}F\)
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consider the following experiment: a card is picked at random from a st…
C. 52 possible outcomes; \(P(\text{red card})=\frac{1}{2}\)
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in a random sample of 100 audited estate tax returns, it was determined…
C. One can be 90% confident that the mean additional tax owed is between \(\boldsymbol{3035}\) and \(\boldsymbol{3865}\)
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in a single experiment, a die is tossed and a spinner with the letters …
C. The sample space is 18. The probability of getting a 2 or a B is \(\frac{8}{18}=\frac{4}{9}\)
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in a random sample of 49 audited estate tax returns, it was determined …
One can be \(90\%\) confident that the mean additional tax owed is between \(\$2839\) and \(\$4045\)
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a study was conducted to determine if there is a relationship between f…
$H_0$: Instant Replay Preference is Independent of Sport; $H_A$: Instant Replay Preference is Dependent of Sport
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calculate the test statistic $x^{2}$, and state your decision regarding…
The test statistic \(\chi^{2}=4.15\). Fail to Reject \(H_{0}\)
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multiple choice 4 points state the null and alternative hypotheses. it …
\(H_0: P_{brown}=0.3, P_{yellow}=0.2, P_{red}=0.2, P_{orange}=0.1, P_{blue}=0.1, P_{green}=0.1\); \(H_a:\text{At least one of the stated proportions is not correct}\)
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in a random sample of 49 audited estate tax returns, it was determined …
C. One can be \(90\%\) confident that the mean additional tax owed is between \(\$2839\) and \(\$4045\)
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question 13 (1 point) the term ______ cost is used to mean all costs ot…
Overhead # Question 14
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state your conclusion to the hypothesis test. a sociologist was interes…
The data does not suggest that age and type of movie preferred are dependent.
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multiple choice 4 points determine the test statistic ( chi^{2} ). a so…
3.623
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find the expected count under the null hypothesis. a sociologist was in…
\(10.29\)
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suppose you have two populations: population a—all students at illinois…
B. The margin of error for Population A will be the same because its confidence level, sample size, and standard deviation will be the same.
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a local retailer currently schedules employees based on the assumption …
There is sufficient evidence to conclude that customers are unevenly distributed throughout the week.
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multiple choice 4 points calculate the test statistic \\( x ^ { 2 } \\)…
13.45
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multiple choice 4 points determine the expected count under the null hy…
40
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multiple choice 4 points determine the critical value. a local retailer…
\(9.49\)
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a local retailer currently schedules employees based on the assumption …
$H_0$: Customers are distributed evenly throughout the week. $H_a$: Customers are not distributed evenly throughout the week.
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select the most appropriate response. if the correlation between a pers…
36% of the variation in a person's annual income can be explained by the predictor variable age.
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multiple choice 4 points select the most appropriate response. a store …
It would be unwise to use the regression line to make a prediction for a display width of \( 12 \) ft.
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arrange the pieces below in two ways without changing the meaning or te…
In Jotaro Kujo's front yard, a giant sunflower is planted by me.
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multiple choice 4 points select the most appropriate response. in an ar…
35.4
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arrange the pieces below in two ways without changing the meaning or te…
1. In Jotaro Kujo's front yard, a giant sunflower is planted by me. 2. A giant sunflower is planted by me in Jotaro Kujo's front yard. (This is the original sentence, but it also …
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determine whether there is a significant linear relationship. each year…
There is enough evidence (at \(\alpha = 0.05\)) to suggest that there is a linear relationship between SALARY and GMAT.
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identify the least squares regression line. consider the following scat…
\(\hat{y}=50 + 10x\)
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arrange the pieces below in two ways without changing the meaning or te…
1. I plant a giant sunflower in Jotaro Kujo's front yard. 2. In Jotaro Kujo's front yard, I plant a giant sunflower.
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5 multiple choice 4 points select the most appropriate response. a univ…
GPA is a poor predictor of starting salary.
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determine the linear correlation coefficient. in an area of the great p…
0.981
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3 multiple choice 4 points select the most appropriate response. given …
no correlation
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identify the correlation coefficient. which correlation coefficient bes…
\(0.7\)
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arrange the pieces below in two ways without changing the meaning or te…
A field trip is planned by Téa Gardner's teacher every two weeks.
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use the scatter diagrams shown, labeled a through f to solve the proble…
\(e\)
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arrange the pieces below in two ways without changing the meaning or te…
1. Téa Gardner's teacher plans a field trip every two weeks. 2. Every two weeks, Téa Gardner's teacher plans a field trip.
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arrange the pieces below in two ways without changing the meaning or te…
A delicious upside - down cake is made with Dio Brando's lucky baking pan (by me). With Dio Brando's lucky baking pan, a delicious upside - down cake is made (by me).
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the accompanying data represent the total travel tax (in dollars) for a…
(a) A point estimate for the population mean travel tax is \(\$83.22\) (b) B. One can be \(95\%\) confident that the mean travel tax for all cities is between \(\$73.26\) and \(\$…
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using the table above, what was the total rainfall for these three mont…
D. 5.14 inches
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a simple random sample of size n is drawn. the sample mean, x, is found…
B. The sample data must come from a population that is normally distributed with no outliers
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a simple random sample of size n is drawn. the sample mean, x, is found…
- For the effect of increasing sample size on margin of error: B. The margin of error decreases. - For the effect of increasing confidence level on margin of error: B. The margin …
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a simple random sample of size n is drawn. the sample mean, \\( \\overl…
Lower bound: \(15.34\), Upper bound: \(19.86\)
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which statement is true? a. the function indicates that the group began…
C. The function indicates that the group began with 40 members and is increasing in size
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arrange the pieces below in two ways without changing the meaning or te…
1. With Dio Brando's lucky baking pan, I make a delicious upside - down cake. 2. I make a delicious upside - down cake with Dio Brando's lucky baking pan.
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a simple random sample of size n is drawn. the sample mean, x, is found…
B. The margin of error decreases
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a simple random sample of size n is drawn. the sample mean, x, is found…
Lower bound: \(16.35\), Upper bound: \(18.85\)
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answer attempt 3 out of 3 $a = 18200$ $b = 0.81$ $r = 0.19$ regression …
\(y = 18200(0.81)^{x}\)
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arrange the pieces below in two ways without changing the meaning or te…
- Two years from now, Bandit Keith's orchestra will be conducted by me. - Bandit Keith's orchestra will be conducted by me two years from now.
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a simple random sample of size n is drawn. the sample mean, \\( \\overl…
Lower bound: \(15.92\); Upper bound: \(19.28\)
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a simple random sample of size n is drawn from a population that is nor…
D. No, the population needs to be normally distributed
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a simple random sample of size n is drawn from a population that is nor…
C. As the level of confidence decreases, the size of the interval decreases.
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a simple random sample of size n is drawn from a population that is nor…
Lower bound: \(101.4\), Upper bound: \(110.6\)
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arrange the pieces below in two ways without changing the meaning or te…
I will conduct Bandit Keith's orchestra two years from now.
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a simple random sample of size n is drawn from a population that is nor…
C. As the sample size decreases, the margin of error increases
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9. from a regular octagon, a triangle is formed by connecting three ran…
\(\frac{6}{7}\)
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a simple random sample of size n is drawn from a population that is nor…
Lower bound: \(100.1\); Upper bound: \(111.9\)
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arrange the pieces below in two ways without changing the meaning or te…
1. Ryunosuke Tanaka will take ballroom dancing classes before the party. 2. Before the party, Ryunosuke Tanaka will take ballroom dancing classes.
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a simple random sample of size n is drawn from a population that is nor…
Lower bound \(100.8\), Upper bound \(111.2\)
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the trade magazine qsr routinely checks the drive - through service tim…
D. One can be 90% confident that the mean drive - through service time of Taco Bell is between 155.3 seconds and 158.1 seconds.
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the trade magazine qsr routinely checks the drive - through service tim…
\(156.7\)
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determine the point estimate of the population mean and margin of error…
The point estimate of the population mean is \(21\). The margin of error for the confidence interval is \(2\).
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you have been given the assignment of speaking about the affects of ill…
B. a library book about the pharmaceutical drug industry in America
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read the speech excerpt below and answer the question. looking for ways…
C. questions
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refer to the accompanying data display that results from a sample of ai…
\(13.05\) Mbps \(<\mu<22.15\) Mbps
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w p davidson high school - credit bearing (tutor) algebra i with probab…
no solution
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use the dictionary entry to answer the question. dictionary, n. a malev…
people's tendency to conform to set meanings of words
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which of the following is not an equivalent expression for the confiden…
C. $161.7\pm27.8$
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surrounded by a culture they hadnt experienced firsthand. on top of the…
A. Code - switching keeps people from expressing themselves by promoting one correct style of communication. B. It is important to recognize that code - switching can help a perso…
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what is the gist of the part of the passage in the box? the colors on a…
The colors on an Olympic uniform can have special meaning.
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but once these students left those mostly black neighborhoods for top c…
D. They balance multiple cultures.
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snakes are milked many times after the initial, or first, collection. t…
The clue is "or first" (a synonym - type context clue).
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fill in the blank the ______ is the best point estimate of the populati…
sample mean
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people at a library were asked how many states they had visited. below …
If the missing data value were 50, the range of the data would change substantially.
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determine the t - value in each of the cases click the icon to view the…
\(1.699\)
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hready determine word meanings using context clues 1 - instruction - le…
to push on from both sides
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determine the t-value in each of the cases click the icon to view the t…
\(-2.093\)
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determine the t - value in each of the cases click the icon to view the…
1.079
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my assignments society, the terms deeper meaning involves shifting betw…
A. They think that the person isn't being authentic.
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snake scientists. it is their only job, and it is a dangerous one. whic…
"push into its fangs"
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use the paragraph to answer the question. blaine ushered the applicant …
The analogy helps the reader understand exactly how defeated Blaine felt in the moment.
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determine the t - value in each of the cases click the icon to view the…
\(1.135\)
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determine the t - value in each of the cases. click the icon to view th…
\(0.727\)
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for parts a and b, use technology to estimate the following a) the crit…
\(1.98\)