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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the numbers of successes and the sample sizes for independent simple ra…
- Hypotheses: \(H_0:p_1 = p_2\), \(H_a:p_1<p_2\) (Option C) - Test statistic: \(z=-2.83\) - Critical value: \(z=-1.28\)
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the numbers of successes and the sample sizes for independent simple ra…
A. $z=-2.83$
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the numbers of successes and the sample sizes for independent simple ra…
A. The assumptions are satisfied, so using the procedures is appropriate. C. \(H_0:p_1 = p_2,H_a:p_1<p_2\)
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the numbers of successes and the sample sizes for independent simple ra…
A. The assumptions are satisfied, so using the procedures is appropriate.
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the numbers of successes and the sample sizes for independent simple ra…
\(\hat{p}_p = 0.194\)
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assignment overview 1 deltamath score: 2/8 penalty: none linear equatio…
\(z = 4\)
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the numbers of successes and the sample sizes for independent simple ra…
$\hat{p}_{2} = 0.278$
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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the height of a building is proportional to the number of floors. the f…
The ratio of height of the building to the number of floors is \(\frac{84}{7}\). The unit rate is \(12\). This means that each floor of the building is \(12\) ft high.
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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the following line graph shows the per game scoring averages for patric…
\(23.9\)
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the following line graph shows the per game scoring averages for patric…
\(15\)
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consider the following data set. the type of homes recently sold by a r…
Correct measure of center: mode Justification: the data have no measurable values
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find the mean of the following data set. assume the data set is a sampl…
\(35.00\)
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identify whether the following data set is unimodal, bimodal, multimoda…
Unimodal, \(14\)
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does this scatter plot show a positive trend, a negative trend, or no t…
No trend
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identify whether the following data set is unimodal, bimodal, multimoda…
Unimodal, \(28\)
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question 13 of 17, step 1 of 1 find the median of the following data se…
\(29.5\)
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a researcher randomly purchases several different kits of a popular bui…
Multimodal, \(60,280,365\)
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although these holidays derive from vastly different cultures, they exp…
B. It marks the beginning of lengthening days.
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the following histogram displays data from a cable repair companys in -…
\(26\%\)
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select the correct answer which event marked the start of the scramble …
B. colonization of Congo
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dwayne had a test average of 82.8 last semester. his first four test gr…
\(85\)
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29 ¿qué hizo? ● escribe preguntas sobre las actividades de ana. usa las…
1. ¿Adónde fue Ana el miércoles pasado? 2. ¿Qué hizo Ana el jueves? 3. ¿Dónde estuvo Ana el viernes pasado? 4. ¿Qué organizó Ana anteayer? 5. ¿Qué dijo Ana a medianoche? Text comp…
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the numbers of successes and the sample sizes for independent simple ra…
$0.111$
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a packaging company prints 500,000 boxes per day. they determine that t…
\(5250\)
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based on the scatter plot below, which is a better prediction for y whe…
\(5\)
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based on the scatter plot below, which is a better prediction for y whe…
\(y = 6\) is a better prediction.
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based on the scatter plot below, which is a better prediction for y whe…
\(58\)
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based on the scatter plot below, which is a better prediction for y whe…
\(3\)
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based on the scatter plot below, which is a better prediction for y whe…
\(y = 6\) is a better prediction.
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6. in rebecca nurses examination, how do the magistrates refer to titub…
6. Mr. Parris's slave woman 7. Rebecca believes the accusers are simply acting and not really afflicted.
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based on the scatter plot below, which is a better prediction for y whe…
If the options are \(y = 3\) and \(y = 9\), \(y = 9\) is a better prediction (assuming some data mis - scaling or mis - optioning as the scatter - plot points around \(x = 5\) are…
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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does this scatter plot show a positive trend, a negative trend, or no t…
negative trend
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according to a survey conducted by a citys chamber of commerce, approxi…
# Explicación: ## Paso 1: Calcular el rango de porcentajes Para calcular el rango de porcentajes, se suma y resta la margen de error al porcentaje estimado. $$41.5\% - 3.8\% = 37.…
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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what word means to act dishonestly in return for money or personal gain…
B. Corrupt
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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 study compared weight loss between patients on diet a and patients on…
\(p - value = 0.1936\)
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does this scatter plot show a positive trend, a negative trend, or no t…
No trend.
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unit 3 test 4. a large simple random sample of people aged nineteen to …
B. Only people aged nineteen to thirty living in the state of Colorado ### Question 5
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a study compared weight loss between patients on diet a and patients on…
\(t_{STAT}\approx1.2976\)
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1. a compact disc (cd) manufacturer wanted to determine which of two di…
D. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the cover designs were randomly assigned to stores. ### Question 2
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a study compared weight loss between patients on diet a and patients on…
C. A Type II error is committed when one concludes that there is not a significant difference in mean weight loss between the two diets when there is indeed a significant differen…
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a study compared weight loss between patients on diet a and patients on…
B. A Type I error is committed when one concludes that there is a significant difference in mean weight loss between the two diets when there is not a significant difference.
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a study compared weight loss between patients on diet a and patients on…
D. \(H_0:\mu_1 = \mu_2\), \(H_1:\mu_1 eq\mu_2\)
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which of the following is not a reason childhood friendships are import…
B. Friends are a child's first chance in learning how to be social with siblings.
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a coach wants to divide the basketball team into two groups for a pract…
median
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a band wants to know what their most popular cd is so that they can hav…
mode
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in 8 - 10, draw a line from each scatter plot to the best description o…
8. No association 9. Positive and non - linear; The size of a home and the cost of monthly utilities for the home 10. Negative and non - linear; The altitude of a hiker and the to…
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center, spread, and shape of distributions: foundations the cost of eac…
\(1000\) thousand
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center, spread, and shape of distributions: foundations the cost of eac…
C. 1,000 thousand
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center, spread, and shape of distributions: foundations 3.19, 3.49, 3.7…
\(3.84\)
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assume that you have a sample of ( n_1 = 8 ), with the sample mean ( ov…
The hypotheses are \(H_0:\mu_1\leq\mu_2\) and \(H_1:\mu_1 > \mu_2\) (Option D). The test statistic \(t_{STAT}\approx1.56\) and the p - value is approximately \(0.119\)
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determine the hypotheses. choose the correct answer below. a. ( h_{0}: …
\(0.119\)
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assume that you have a sample of ( n_1 = 8 ), with the sample mean ( ov…
\(t_{STAT}\approx1.56\)
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assume that you have a sample of ( n_1 = 8 ), with the sample mean ( \b…
D. $H_0:\mu_1\leq\mu_2$; $H_1:\mu_1 > \mu_2$
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center, spread, and shape of distributions: foundations 87, 89, 92, 96,…
C. 12
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which term refers to the possibility of an investor losing some or all …
risk
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what word means the act of setting up a colony away from ones place of …
Colonize
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a study was done on proctored and nonproctored tests. the results are s…
C. \(H_0:\mu_1=\mu_2\), \(H_1:\mu_1 < \mu_2\)
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question in a certain algebra 2 class of 27 students, 15 of them play b…
\(\frac{25}{27}\)
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an online travel agent that specializes in cruises wanted to compare th…
A. If both sample sizes are not each at least 30, then one must assume that the underlying populations are normally distributed to perform this procedure. Also, one must assume th…
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in a certain algebra 2 class of 27 students, 17 of them play basketball…
\(\frac{11}{27}\)
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question the following table represents the highest educational attainm…
\(0.218\)
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drag each tile to the correct box according to marxist theory, in what …
1. Capitalism creates an unequal distribution of income and wealth. 2. The working class revolts against the upper class. 3. The government takes control of all factories and prop…
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what word means to refuse to buy or handle(goods) as a punishment or pr…
C. Boycott
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what does it mean to be a unit of account? a. any item that maintains i…
C. The item is divisible and each unit is worth the same.
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read the excerpt from \healthy eating\ but no one can ignore the damage…
statistics
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6. which situation best shows causation? the number of ice - cream bars…
The amount of time a cell phone is used affects the charge of its battery.
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5. the table shows the heights and the lengths of several rectangles. w…
Weak negative correlation
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(02.04 lc) the table of values represents a linear function g(x), where…
- Part A: The slope is \(40\), which means the balance increases by \(40\) dollars per day. - Part B: - Point - slope form: \(y - 600=40x\) - Slope - intercept form: \(y=40x + 600…
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read the excerpt from healthy eating. but no one can ignore the damage …
She provides statistics to show how harmful a poor diet can be.
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the graph illustrates the top five activities in physical education at …
running
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marcus reads in a magazine article that 62% of teenagers prefer batman …
15. Using a binomial probability calculator: \(P(X = 40)\approx0.0003\) 16. Using a binomial cumulative - distribution calculator: \(P(X\lt30)\approx0.113\) 17. Using a binomial c…
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which best describes what it means to narrow a topic for an informative…
D. Make it more specific.
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a tennis player makes a successful serve 70% of the time. assume that e…
11. \(\approx0.117649\) 12. \(0.324135\) 13. \(\approx0.74431\) 14. \(0.579825\)
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a country has an inflation rate of 1.4% per year, meaning the cost of i…
\(f(x)=17.99(1.014)^x\) (the fourth option)
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find the mean of this data set. 88, 95, 66, 74, 92, 86, 94
\(85\)
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drag each tile to the correct box. match the different terms associated…
1. Middle Passage 2. Zong ship tragedy 3. Europe 4. The Americas
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find the mean of this data set. 18, 37, 29, 19, 33, 21, 11
\(24\)
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find the mean of this data set. 86, 44, 58, 73, 65, 40
\(61\)
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native american women were influential in the indigenous rights movemen…
A. Robertson and Means added to the event in unique ways; Means, for instance, offered a concise bu
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what does separation of church and state mean? churches cannot make law…
The government cannot make laws based on religion.
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halstead, brayden unit 6 a country has an inflation rate of 1.4% per ye…
\(f(x)=17.99(1.014)^x\) (the fourth option)
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find the mean of this data set. 72, 61, 86, 64, 52
\(67\)
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read the information in the table and answer the question that follows …
A. Doing good deeds is not a means to salvation
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12. at an outdoor flea market, the organizer estimates that 2000 people…
The expected number of people who will attend the flea market is \(1220\)
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6. according to north carolina mutual life insurances mortality table, …
The expected gain for NC Mutual is \(\$100\)
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question 6 a 2014 survey suggests that 71% of u.s. teenagers use facebo…
The probability that the student uses Twitter given that the student uses Facebook is approximately \(0.2113\)
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question 5 the national center for health statistics conducted a survey…
\(0.85\)
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is there a relationship between gender and relative finger length? to f…
a) \(P(R|F)=\frac{41}{106}\approx0.387\). Interpretation: If we randomly select a female from the survey respondents, there is approximately a \(38.7\%\) chance that her ring fing…
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question 11 (multiple choice worth 1 points) (04 03r mc) find the weigh…
4
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question 2 how is the hatching of water python eggs influenced by the t…
a) \(\frac{75}{104}\approx0.721\) b) \(\frac{18}{43}\approx0.419\)
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question 1 the titanic struck an iceberg and sank on its first voyage a…
a) \(\frac{197}{319}\approx0.618\) b) \(\frac{291}{442}\approx0.658\)
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15. reciprocity between rights and obligations means enjoyment of ones …
15. B. false 16. B. a letter written by Thomas Jefferson
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1. read this aside from paragraph 10. a little more than kin and less t…
Hamlet means that he and Claudius have a blood - related (kin) connection (Claudius is his uncle) but Claudius lacks proper kindness (in Hamlet's view, Claudius's actions like qui…
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a law bans the sale of wooden poles and nails to prevent people from bu…
The law is not content neutral.
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math analyzing data search and rescue events rangers who work for the n…
Climbing