Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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use the box - and - whisker plot to answer the following.(a) what is th…
(a) \(30\) cm (b) \(55\) cm (c) \(50\) cm
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what percentage of the shape is blue? write your answer using a percent…
60%
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combine the two simple sentences into one complex sentence sentence usi…
1. The poet closed her notebook because she finally finished the sonnet. 2. As the moonlight touched the river, it looked like liquid silver. 3. Although the words sounded beautif…
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what percentage of the shape is pink? write your answer using a percent…
35%
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1 multiple choice 2 points according to behavioral economics, placement…
1. C. maximize impulse buying by consumers 2. D. the effect of the availability heuristic
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the heights (in inches) for a sample of 14 male adults are 62, 82, 79, …
| Class Boundaries | Frequency | | ---- | ---- | | \(61.5 - 67.5\) | \(1\) | | \(67.5 - 73.5\) | \(5\) | | \(73.5 - 79.5\) | \(6\) | | \(79.5 - 85.5\) | \(1\) | Now, to draw the h…
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read this passage from a letter sent to u.s. president harry s. truman …
C. The United States had provided weapons and aid to the Viet Minh.
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vijay wants to get his teacher a gift and asked his classmates for sugg…
\(4\)
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read each sentence below. the pronoun is unclear; rewrite the sentence …
1. When Maya read her poem to Olivia, Maya cried. / When Maya read her poem to Olivia, Olivia cried. 2. The poet admired the stanza more than the other poet, but the poet didn't s…
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find ( z_{alpha/2} ) for the 99% confidence interval (draw the graph an…
\(z_{\alpha/2}=2.576\)
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problem 9 the average price of a car is $25,500. assume the variable is…
a. The probability that a car's price is less than \(\$29000\) is \(0.8485\) b. The probability that a car's price is more than \(\$31000\) is \(0.0526\)
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problem 8 the average salary of college professor in new york is $83,00…
\(0.5886\)
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problem 7 full - time ph.d. students receive an average of $12,500 per …
The probability that a student makes more than \(\$10000\) is \(0.9946\)
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question 3 of 20 how can europes economic weaknesses leading up to the …
C. The re - forming of national borders left some European countries without sufficient resources.
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problem 6 a normal population has a mean $\\mu = 43$ and standard devia…
\(0.9772\)
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before launching the holocaust, the nazis used the media to describe th…
B. Dehumanizing a group of people
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problem 5 a normal population has a mean $\\mu = 121$ and standard devi…
\(0.2119\)
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b. x is a normally distributed random variable with a standard deviatio…
For part b, the mean \(\mu = 19.31\). For part c, the mean \(\mu=72.98\)
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principal patel is planning the school carnival. she asked students to …
46
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a local coffee store is curious about the size beverages their customer…
\(0.400\)
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a nurse decides to run a simulation on the weights of the next 15 babie…
\(0.333\) (the third option)
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problem 4 a. x is a normally distributed random variable with a standar…
\(\mu = 7.45\)
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the following values are the results from a simulation for rolling a st…
The simulated probability is \(P_{simulated}=\frac{10}{24}\approx0.417\) (Wait, no. Wait, \(\frac{10}{24}=\frac{5}{12}\approx0.417\) is wrong. Wait, \(10\div24 = 0.416\cdots\). Bu…
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you decide to simulate the results of flipping a coin 15 times. you ass…
The simulated probability is \(0.533\), which is more than the theoretical probability. So the correct option is: The simulated probability is \(0.533\), which is more than the th…
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a company is planning to hire 12 new employees. a simulation is run to …
0.417
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a sales representative for a baby food company wants to survey 300 rand…
Yes, because each of the two outcomes are equally likely.
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a student considers how many people enter a particular bank during the …
0.600
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a sales clerk wants to predict the shoe sizes that will be sold this we…
0.400
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a teacher is told he will have 20 students in his first - period class …
\(0.250\)
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a clothing store owner has shirts on sale this weekend in three sizes: …
0.350
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which of the following sentences best describes a sphere of influence i…
It gave a nation exclusive trade rights in a particular region of China.
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14. elizabeths teacher said she should always analyze an authors writin…
interpretation
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stephanie wants to learn how to paint. she purchases a 5 - pack of pain…
A. \(56 = P+4x\)
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problem 3 in the distribution shown, state the mean and standard deviat…
The mean is \(229\) and the standard deviation is \(20\)
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confidence intervals and hypothesis testing introduction to finding the…
\(17.275\)
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a bag contains eight tiles labeled a, b, c, d, e, f, g, and h. one tile…
\(\frac{3}{4}\)
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a twelve - sided die with sides labeled 1 through 12 will be rolled onc…
\(\frac{5}{12}\)
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a box contains ten cards labeled j, k, l, m, n, o, p, q, r, and s. one …
\(\frac{2}{5}\)
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h₁: p>0.5 oc. h₀: p=0.5 h₁: p≠0.5 od. h₀: p=0.5 h₁: p<0.5 identify the …
D. Reject \(H_0\). There is sufficient evidence to support the claim that the probability of the home team winning is greater than one - half.
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consider a sample of 50 football games, where 31 of them were won by th…
\(0.045\)
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find the z value that corresponds to the given area. in case you cant r…
a. \(z=-0.25\) b. \(z = 0.44\) c. \(z=0.23\) d. \(z = 0.52\)
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consider a sample of 50 football games, where 31 of them were won by th…
The test statistic for this hypothesis test is $1.70$ (rounded to two decimal places).
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consider a sample of 50 football games, where 31 of them were won by th…
B. \(H_0:p = 0.5\), \(H_1:p>0.5\)
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mary has five or six new words on a personal notebook, and whenever she…
Cognitive strategy
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an experiment was conducted to determine whether giving candy to dining…
A. Reject the null hypothesis. There is sufficient evidence to support the claim that giving candy results in greater tips. b. The confidence interval is \(-3.06<\mu_1-\mu_2<-1.49…
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what is the average of the points a, b and c with weights 1, 1 and 3 re…
\((-5.2,-0.6)\)
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read the sentence. andreas opponent was honest and straightforward, but…
an antonym
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answer the statistical measures and create a box and whiskers plot for …
Min: \(3\), Q1: \(4\), Med: \(8.5\), Q3: \(13\), Max: \(16\)
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complete the frequency table for the following set of data. you may opt…
| Interval | Frequency | |--|--| | \(0 - 4\) | \(1\) | | \(5 - 9\) | \(5\) | | \(10 - 14\) | \(2\) | | \(15 - 19\) | \(7\) |
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read the sentence. when cotton clothing is permeated, or soaked through…
saturated
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arrange the pieces below in two ways without changing the meaning or te…
1. In a secret language, I wrote Asahi Azumane's letter. 2. I wrote Asahi Azumane's letter in a secret language. (This is the original sentence, but it also counts as one of the t…
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literary devices a authors techniques the literary devices an author us…
Alexa is an open book.
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systolic blood pressure readings for a population of adults are normall…
\(69.15\%\)
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use the accompanying table of z - scores and percentiles to find the pe…
\(30.66\)
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the scores on a test are normally distributed with a mean of 80 and a s…
\( 88 \)
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a pacemaker is placed inside a persons body, so you cant see it. it doe…
to poke out of something
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determine word meanings using context clues 1 - quiz - level d see it. …
to manage
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linear equations w/ distribution (lev 1) score: 1/5 penalty: none quest…
$x = 5$
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based on the scatter plot below, which is a better prediction for x whe…
65
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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 senator rose to power by showing great acumen. he always showed ins…
favorable
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read the passage and then answer the question. the saxophone has been a…
imbalance
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read the passage and then answer the question. there are nearly thirty …
disable
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my friend monique is so lackadaisical. she never pays attention and alw…
negative
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read the sentence. then, use the drop - down menus to answer the questi…
sarcastic and cleverly amusing
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read the excerpt from as you like it by william shakespeare. all the wo…
People play different roles throughout their lives.
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question based on the two data sets represented below, complete the fol…
The mean of Data Set B is greater than the mean of Data Set C. The range of Data Set B is greater than the range of Data Set C.
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in the data set below, what are the lower quartile, the median, and the…
lower quartile \(=55\), median \(=69.5\), upper quartile \(=72\)
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read the passage and then answer the question. pablo picasso is often c…
not true to life
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find the indicated iq score. the graph to the right depicts iq scores o…
\(110\)
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the following is a draft of a student essay. it may contain errors. pre…
C. Cultivating good study habits, taking math and science courses that go beyond basic diploma requirements, and maintaining a good grade point average are all important.
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question based on the two data sets represented below, complete the fol…
The median of Data Set J is greater than the median of Data Set K. The interquartile range (IQR) of Data Set J is less than the interquartile range (IQR) of Data Set K.
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in an experiment, the probability that event a occurs is \\( \\frac { 4…
\(\frac{14}{15}\)
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the figure shows the graphs of the cost and revenue functions of a comp…
\( R(100)-C(100)=-\$10000 \). This means that when the company produces and sells 100 radios, the company has a loss of \( \$10000 \) (since revenue minus cost is negative, cost i…
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read the excerpt from mark twains memoir, life on the mississippi. i wa…
It is hyperbole that means that the author’s eyes were wide with fear.
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you are given the sample mean and the population standard deviation. us…
The 95% confidence interval
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a random sample of 40 college professors is selected from all professor…
| Stem | Leaves | |------|--------| | 2 | 0,6,7 | | 3 | 0,4,5,5,6,6,6,8,9 | | 4 | 0,1,1,2,3,5,9,9 | | 5 | 2,5,7,8,8 | | 6 | 1,2,2,3,4,4,4,4,7,8 |
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a certain drug is used to treat asthma. in a clinical trial of the drug…
For the first part (rejecting the null hypothesis): B. Reject the null hypothesis because the \(P -\)value is less than or equal to the significance level, \(\alpha\) For the seco…
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a food safety guideline is that the mercury in fish should be below 1 p…
$0.190$ ppm $<\mu<1.258$ ppm
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a data set includes 109 body temperatures of healthy adult humans havin…
C. This suggests that the mean body temperature is lower than \(98.6^{\circ}F\)
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a researcher wishes to estimate, with 90% confidence, the population pr…
C. Having an estimate of the population proportion reduces the minimum sample size needed.
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a data set includes 103 body temperatures of healthy adult humans havin…
$97.835^{\circ}F<\mu<98.165^{\circ}F$
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here are summary statistics for the weights of pepsi in randomly select…
a. \(0.82222<\mu<0.82593\) b. B. One has \(95\%\) confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of Pep…
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match each correlation coefficient to the appropriate scatter plot. the…
The scatter - plot with data points more clustered around the regression line (showing a more noticeable upward trend) has \( r = 0.6 \), and the scatter - plot with data points m…
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match each correlation coefficient to the appropriate scatter plot. r =…
\( r = 0.9 \) matches the first scatter - plot (with an upward trend and some clustering), and \( r=-0.3 \) matches the second scatter - plot (with a weak downward trend and more …
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at the beginning of the semester, a professor tells students that if th…
0.46
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read the passage from \the caged bird.\ the free bird thinks of another…
longing, sadness
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the table to the right shows selected ages of licensed drivers in one c…
\(35\)
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rita rolls a standard, 6 - sided die. let a be the event that the numbe…
The conditional probability of \(B\) given \(A\) is the probability that the number Rita rolls is even and less than \(6\). The conditional probability of \(B\) given \(A\) is \(\…
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in a recent court case it was found that during a period of 11 years 89…
- Conclusion on the null hypothesis: Reject the null hypothesis because the P - value is less than or equal to the significance level, \(\alpha\) - Final conclusion: A. There is s…
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let a and b be two events with the following probabilities. • ( p(a)=0.…
\(0.8\)
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a genetic experiment involving peas yielded one sample of offspring con…
\(P - value=0.064\)
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carmen had 8 green marbles, 6 red marbles, and 2 yellow marbles in a ba…
\(\frac{3}{16}\)
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this graph shows how the amount of gas remaining is related to the numb…
2.5 gallons
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refer to the accompanying data display that results from a sample of ai…
\(4.55\)
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based on the two data sets represented below, complete the following se…
The median of Data Set P is equal than the median of Data Set Q. The maximum of Data Set P is less than the maximum of Data Set Q.
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question based on the two data sets represented below, complete the fol…
The median of Data Set L is less than the median of Data Set M. The maximum of Data Set L is less than the maximum of Data Set M.
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which graph shows the line of best fit for the data in the scatter plot?
El primer gráfico (el que tiene la línea con pendiente positiva) es el que muestra la línea de mejor ajuste para los datos en el diagrama de dispersión.
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which scatter plot could have a line of best fit whose equation is $y=-…
El primer gráfico de dispersión no tiene una tendencia negativa clara. El tercer gráfico no tiene una tendencia negativa clara. El cuarto gráfico no tiene una intersección con el …
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which statements are true about the line of best fit for the data in th…
- It has a negative slope. - It crosses the \(y\) - axis at about \((0,6)\). - Its slope is about \(-\frac{2}{3}\).