統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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question 15 (1 point) the following diagram represents independent samp…
independent samples
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question 14 (1 point) what test do we use if we want to compare the eff…
independent samples t - test
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thirty - two different video games showing alcohol use were observed. t…
The value of $df$ is $31$.
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thirty - two different video games showing alcohol use were observed. t…
D. The number of degrees of freedom. The value of \(df\) is \(n-1=32 - 1=31\).
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a genetic experiment involving peas yielded one sample of offspring con…
C. Fail to reject the null hypothesis because the P - value is greater than the significance level, \(\alpha\).
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a genetic experiment involving peas yielded one sample of offspring con…
If it is a two - tailed test: \(P - value = 0.254\) If it is a right - tailed test (\(H_1:p>0.26\)): \(P - value=0.127\)
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question 12 (1 point) what statement is not true about the levels of me…
They require that all data be measured in whole numbers only.
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question 10 (1 point) which is not one of the levels of measurements pr…
Percentage
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a genetic experiment involving peas yielded one sample of offspring con…
- Null hypothesis \(H_0:p = 0.26\), alternative hypothesis \(H_1:p eq0.26\) (Option A). - Test statistic \(z\approx1.14\). - P - value \(=0.2542\). - Conclusion about the null hy…
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question 11 (1 point) both interval and ratio data allow for a wide ran…
quantitative because data can be measured and expressed numerically, allowing for meaningful calculations and comparisons.
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a genetic experiment involving peas yielded one sample of offspring con…
A. \(H_0: p = 0.26\), \(H_1: p eq0.26\)
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a certain drug is used to treat asthma. in a clinical trial of the drug…
B. Fail to reject the null hypothesis because the P - value is greater than the significance level, \(\alpha\).
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a certain drug is used to treat asthma. in a clinical trial of the drug…
C. \(H_0:p = 0.08\)
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a certain drug is used to treat asthma. in a clinical trial of the drug…
a. Left - tailed test b. \(z = 0.57\) c. \(P-\text{value}=0.716\) (rounded to three decimal places)
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a certain drug is used to treat asthma. in a clinical trial of the drug…
a. Left - tailed test b. \(z=-0.57\)
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a certain drug is used to treat asthma. in a clinical trial of the drug…
Left - tailed test
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use the results from a survey of a simple random sample of 1199 adults.…
C. Choosing such a specific significance level could give the impression that the significance level was carefully chosen to reach a desired conclusion.
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use the results from a survey of a simple random sample of 1199 adults.…
A. This statement seems to suggest that with a high P - value, the null hypothesis has been proven or is supported, but this conclusion cannot be made.
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use the results from a survey of a simple random sample of 1109 adults.…
b. B. The confidence interval method is not always equivalent to the other two. c. This statement means that if the P - value is low in relation to the significance level ($\alpha…
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use the results from a survey of a simple random sample of 1199 adults.…
B. The confidence interval method is not always equivalent to the other two.
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use the results from a survey of a simple random sample of 1199 adults.…
C. Yes. Assuming quality of driving can be quantified, a distribution that is extremely skewed to the left would be the most promising scenario for more than this proportion of ad…
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use the results from a survey of a simple random sample of 1181 adults.…
\(p = 0.85\)
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use the results from a survey of a simple random sample of 1181 adults.…
$\hat{p}=0.91$
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use the results from a survey of a simple random sample of 1181 adults.…
\(1075\)
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identify the type i error and the type ii error that correspond to the …
B. Reject the null hypothesis that the percentage of households with Internet access is equal to \(60\%\) when that percentage is actually equal to \(60\%\).
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identify the type i error and the type ii error that corresponds to the…
B. Fail to reject the claim that the proportion of people who write with their left hand is 0.17 when the proportion is actually different from 0.17.
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identify the type i error and the type ii error that corresponds to the…
A. Reject the claim that the proportion of people who write with their left hand is 0.17 when the proportion is actually 0.17.
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assume a significance level of α = 0.05 and use the given information t…
A. There is not sufficient evidence to support the claim that the standard deviation of pulse rates of the group of adult males is more than 15 bpm.
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assume a significance level of $\\alpha = 0.01$ and use the given infor…
B. Reject $H_{0}$ because the P - value is less than or equal to $\alpha$.
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assume a significance level of α = 0.05 and use the given information t…
D. There is not sufficient evidence to support the claim that the percentage of adults that would erase all of their personal information online if they could is more than 47%.
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assume a significance level of α = 0.05 and use the given information t…
C. Fail to reject \(H_0\) because the \(P\) - value is greater than \(\alpha\).
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claim: the standard deviation of pulse rates of adult males is more tha…
\(\sigma>10\)
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claim: fewer than 11.5% of homes have only a landline telephone and no …
\(H_0:p = 0.115\) \(H_1:p < 0.115\)
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claim: fewer than 11.5% of homes have only a landline telephone and no …
\( p < 0.115 \)
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a formal hypothesis test is to be conducted to test the claim that the …
$H_0:\mu = 48$ minute(s)
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check here for instructional material to complete this problem. evaluat…
\(-1.31\)
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check here for instructional material to complete this problem. evaluat…
$1.08$
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check here for instructional material to complete this problem. evaluat…
\(7.071\)
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check here for instructional material to complete this problem. evaluat…
$-1.40$
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check here for instructional material to complete this problem. evaluat…
\(51.209\)
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find the equation for the least squares regression line of the data des…
\(y=-0.053x + 1.232\)
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based on the scatter plot below, which is a better prediction for y whe…
5
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britney works with a property developer building houses close to the co…
13
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what is the equation of the trend line in the scatter plot? use the two…
\(y =-\frac{5}{8}x + 6\)
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find the equation for the least squares regression line of the data des…
\(y=0.131x + 5.5\)
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find the correlation coefficient, r, of the data described below. sally…
\(-0.837\)
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which of the following is not considered appropriate e-mail etiquette? …
C. Always using Reply to All when responding to e - mail that is sent to multiple people
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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find the equation for the least squares regression line of the data des…
\(y = 0.156x-3.078\)
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the equation for the line of best fit is y = 10x + 8. according to the …
A post with no photos would likely get about 8 likes.
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robertos salon: number of customers by stylist number of products sold …
Kat
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question 9 (mandatory) (1 point) listen in her vindication of the right…
d) all men and women share a common capacity for reason and self - government.
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the philippines and malaysia lay claim to resources under and around th…
A. The claims to the Spratly Islands by both the Philippines and Malaysia overlap due to exclusive economic zones up to 200 nautical miles from their coasts.
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the parabolic arches that support the roof of the dallas convention cen…
\(x\): horizontal measurement (en pies) y \(y\): vertical measurement (en pies) ### b)
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5b score: 25.63/30 answered: 12/13 question 2 score on last try: 2.63 o…
\(-64000\) dólares.
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5b score: 25.63/30 answered: 12/13 progres question 2 score on last try…
\(-64\)
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if you dont know the answer to a multiple choice question you could: se…
d. Try all of the above
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the data in the table represents a companys profit based on the number …
\(y=-1.036x^{2}+1024.771x - 163710\)
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the table shows the estimated number of bees, y, in a hive x days after…
\(y = 9958(0.972)^{x}\)
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cramming for an exam means eating as much junk food as possible in the …
False
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the phrase \critical thinking\ means using arguments to help others cha…
B. False
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in a recent year, 5 out of 6 movies cost between $50 and $99 million to…
\(480\)
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a therapist wishes to show that his new therapy is a marked improvement…
B. His treatment is no better than the alternative because the percentage improved is the same for both treatments.
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a student has been given an assignment to write a literary analysis. wh…
- Accurate: "The thesis should be supported with evidence from the text."; "The thesis should make an arguable claim about the meaning or purpose of the text." - Inaccurate: "The …
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match the correlation coefficients with the scatterplots shown below. s…
Scatterplot A: \(r = 0.64\), Scatterplot B: \(r = 0.83\), Scatterplot C: \(r=-0.08\), Scatterplot D: \(r = - 0.77\)
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which of these is a shared element of the idea and aaidd definitions of…
The concept of adaptive behavior
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how many more cars were yellow than were green?
\(4\)
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how many more people owned a ps3 than owned a xbox 360?
4
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what does it mean for a member of congress to represent her constituent…
the representative votes according to the preferences of her constituency
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contrast the roles that the house and senate play in the impeachment an…
- House: involves a vote requiring a simple majority; charges an individual with "Treason, Bribery, or other high Crimes and Misdemeanors"; initiates the impeachment process - Sen…
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un cubo numérico se lanza tres veces. un resultado está representado po…
# Explicación: ## Paso 1: Calcular el número total de resultados posibles Un cubo numérico tiene 6 caras. Al lanzarlo tres veces, el número total de resultados posibles es \(6\tim…
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contrast the roles that the house and senate play in the impeachment an…
- House: involves a vote requiring a simple majority; charges an individual with "Treason, Bribery, or other high Crimes and Misdemeanors"; initiates the impeachment process - Sen…
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in either chamber, after a bill is sponsored, it is typically referred …
First blank: committee Second blank: Rules Committee Third blank: (no specific equivalent as strict as House's Rules Committee in the Senate, but if we assume a more general conti…
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complete the following statement. the formally nominates judges for fed…
The president formally nominates judges for federal courts. After nomination, the candidate must first be considered by the Senate Judiciary Committee.
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in this part of the text, what does the word \cool\ most closely mean? …
A. interesting
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read the sentences from isaacs essay. comic books have a long history. …
The first comic book
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3 multiple choice 2 points what are systemic issues? challenges arising…
3. Broad challenges rooted in social systems, such as inequality and lack of access to resources. 4. Fairness and justice in access to resources and opportunities. 5. Corporate so…
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the social connections linking human beings who engage in different pro…
relation of production
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the mode of exchange that requires some form of centralized social orga…
redistribution.
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question 2 2 pts the activity linking human social groups to the materi…
labor.
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read this part of the text. gluten is found in some grains. the best em…
A. bunch of wheat
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the economic theory which represented a formal attempt to explain the w…
Marxist economic theory.
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question 5 2 pts the tools, skills, organization, and knowledge used to…
mode of production
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in many small - town cafes in minnesota, there is a dice cup on each ta…
balanced reciprocity.
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a reciprocal situation in which neither the time nor the value of retur…
generalized reciprocity.
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question 3 the using up of material goods necessary for human physical …
consumption.
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question 5 the exchange of goods and services of equal value is called …
reciprocity.
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what term describes the using up of material goods necessary for human …
Consumption
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4 multiple choice 2 points what is the term for ensuring a method align…
4. C. Validity 5. C. To ensure accurate and meaningful results. 6. D. To ensure they accurately measure the phenomenon being studied
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an economic system dominated by the supply - demand - price mechanism c…
capitalism.
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choose the best idea to add to a summary of \more than a uniform.\ athl…
Although Olympic uniforms are stylish, they also show what is important to the country they stand for.
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29 ce tableau représente lévolution de la taille dun plant de haricot e…
a. Le graphique de Liam est faux car il n'a pas représenté tous les points du tableau (points pour les jours 4 et 6 manquants). b. La taille n'est pas proportionnelle au nombre de…
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choose the best idea to add to a summary of \more than a uniform.\ athl…
Team uniforms sometimes incorporate details that relate to a country’s history and cultural background.
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choose the best idea to add to a summary of \more than a uniform.\ athl…
Some countries choose to put a meaningful national symbol on the team's uniforms.
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question 10 the exchange of goods and services of equal value is called…
reciprocity.
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a is a historically occurring set of social relations through which lab…
mode of production
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the mode of exchange that requires some form of centralized social orga…
redistribution.
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question 6 2 pts a reciprocal situation in which neither the time nor t…
generalized reciprocity.
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question 3 2 pts the using up of material goods necessary for human phy…
consumption.
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some white southerners believed deeply that they should be shown more r…
They thought he disrespected white people by treating all the voters the same.