Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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marisa recorded the number of hours she babysat each day last summer. s…
The data is skewed and shows that she was equally likely to work more than 3.5 hours or less than 5 hours.
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assume that when human resource managers are randomly selected, 63% say…
\(0.2811\)
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the probability of a randomly selected adult in one country being infec…
\(0.110\)
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question 4 1 pts when translated,______means \false science.\ previous …
Pseudoscience
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multiple-choice questions each have five possible answers (a, b, c, d, …
\(\frac{48}{125}\)
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denise and sandra are playing a target game. the object of the game is …
Denise is winning because she is generally closer to the center.
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the heights of the starting players on each of two basketball teams are…
Both of the means are correct, but the reasoning is incorrect.
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lisa and jen are each reading a different 250 - page book consisting of…
- the interquartile range of the chapter lengths in each book - the range of chapter lengths in each book
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miranda is conducting a poll to determine how many students would atten…
twenty names from each grade pulled blindly from a container filled with the names of the entire student body written on slips of paper
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which comparison of the distributions is true? the distribution of low …
The distribution of low temperatures is skewed right, and the distribution of high temperatures is nearly symmetric.
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the box plots show the weights, in pounds, of animals at two different …
10
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how might the graph be redrawn to emphasize the difference between the …
The scale on the y - axis could be changed to 25 - 40.
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multiple - choice questions each have five possible answers (a, b, c, d…
\(\frac{16}{125}\)
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1 0 1 4 5 2 3 3 5 6 6 3 1 6 6 8 9 9 9 4 0 1 2 4 6 6 0 2 3 6 7 0 1 which…
The interval of the stem - and - leaf plot is not consistent.
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which best represents the center of the data set below? average monthly…
median
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if a procedure meets all of the conditions of a binomial distribution e…
\(0.0617\)
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which measure would be the most appropriate to describe the center of t…
mean
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40% of consumers believe that cash will be obsolete in the next 20 year…
\(0.315\)
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suppose that a computer chip company has just shipped 5,000 computer ch…
(a) \(0.00000360\) (b) \(0.000004\)
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a histogram shows data that is skewed to the right. which most likely d…
The mean is greater than the median. The rightmost values in the data set raise the mean more than the median.
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based on a survey, assume that 31% of consumers are comfortable having …
\(6\)
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the stem - and - leaf plot below shows the number of pages each student…
33 pages.
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(a) determine the probability that both contain diet soda. p(both diet)…
\(0.1594\)
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the box - and - whisker plot below shows the same data. which of the fo…
The interval on the \(x\) - axis of the histogram is inconsistent.
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a poll asks shoppers at the mall how many cups of water they typically …
6
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the stem - and - leaf plot below shows the number of pages each student…
35 pages.
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which measure is most appropriate to describe the center of the data in…
median
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due to a manufacturing error, two cans of regular soda were accidentall…
(a) \(0.0036\) (b) \(0.8370\)
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a test to determine whether a certain antibody is present is 99.4% effe…
\(0.9762\)
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lifetime pets which of the following is most likely true? the mean and …
The mean is in the interval \(6 - 10\), and the median is in the interval \(1 - 5\).
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gemma is creating a histogram based on the table below.which scale can …
\(0 - 50\)
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cost per event number of events event cost why is the graph misleading?…
The data is not distributed equally across the x - axis intervals.
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in a certain marathon, 45 percent of the runners were men, and the rest…
\(59\)
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fast pax annual salaries (thousands of dollars) analysts determined tha…
The graph is right - skewed. The median is the most appropriate measure of center. You could tell a friend that Fast Pax has a right - skewed salary distribution and the median is…
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milo is seriously considering buying a small fast - food franchise. his…
D. He wants Milo to perform due diligence when evaluating the franchise opportunity.
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the report mentioned that the average salary is $39,500. based on the r…
The first two boxes (The data is skewed, so the mean is not a good measure of the data; A median of $20,000$ is probably a better indicator of the salary you would earn) should be…
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which of the following is true? i. the mode number of barrels sold is e…
III. The mode number of barrels sold is equal to the range of the number of barrels sold.
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fast pax annual salaries (thousands of dollars) the report mentioned th…
The average salary of $39,500 might not be a good representation of the typical salary. The box - and - whisker plot suggests a skewed distribution. It would be better to look at …
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2. consider the table of values at the right. complete the table so tha…
The value of \(y\) when \(x = 5\) is \(3\), and the value of \(x\) when \(y = 22\) is \(\frac{1}{4}\). The average rate of change (slope) of \(-4\) means that for every unit incre…
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the descriptive statistics are shown. the distribution is positively sk…
The data is skewed, The right whisker is long, The left whisker is short.
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multiple choice 1 point which of the following is true about loans and …
Higher credit scores typically lead to less favorable interest rates.
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exercise #15—short words are better the following phrases and sentences…
I have an idea. / Thanks for your letter. / Later we will need your approval. / All the living things died. / We are trying to build a more inclusive society. / Now. / Communicati…
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the descriptive statistics are shown. compare the measures. describe wh…
The distribution is positively skewed. In a box - and - whisker plot, this would mean that the right whisker (representing the higher values) is longer than the left whisker. The …
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which type of graph would be most appropriate to display this data? a h…
a box - and - whisker plot
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to qualify for a federal housing administration (fha) loan, a person mu…
- First question: fulfill income guidelines. - Second question: A personal loan without assets to cover the loan amount.
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using intervals of width 10, how many intervals are needed for this gra…
25 or more
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study the graph carefully. which of the following statements is true? t…
The intervals are not the same width.
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4 the bill of rights the conventions of a number of the states, having …
B. through the different sections outlining the various rights of the citizens
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readworks 6. read this stanza from the text \oh, mother, do get him som…
6. D. piece of clothing 7. C. before
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read the quotations below from ray bradburys fahrenheit 451. match each…
1. "How like a mirror, her face..." - Through others we learn about ourselves. 2. "We ought to be really bothered..." - Discomfort can show that you care about something meaningfu…
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what is the general aim of all sampling methods? (1 point) to study as …
To obtain a sample that is representative of the target population
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central ideas venice, the sinking city venice is a unique european city…
- "People use boats and gondolas to go from one place to another": The Floating City - "Venice, made up of 118 islands, is connected by canals and bridges": The Floating City - "T…
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literacy stephanie has $152 in the bank. she withdraws $20. then she de…
The addition expression is \(152+( - 20)+84\). The sum is \(216\), which means Stephanie has \(\$216\) in her bank account after the withdrawal and deposit.
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which of the following statements is true for the situation given above…
D. The number of visitors at the carnival each day ranged from 30 to 100.
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assume that a simple random sample has been selected from a normally di…
-2.24
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shawna is giving a speech about traveling to south africa. to start she…
A. images and anecdotes
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the number of times a player has golfed in ones lifetime is compared to…
It is a weak negative correlation, and it is not likely causal.
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use software or a calculator to find the range, variance, and standard …
The standard deviation \(s\) of the data set (after performing the calculation using appropriate software/calculator) is approximately \(0.54^{\circ}F\) (the actual value will dep…
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listed below are the amounts (dollars) it costs for marriage proposal p…
The variance of the sample data is \(440718.0\) dollars².
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the table below shows the scores on a science test. john 75 brett 80 el…
d. 2.2
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what percent of the data is greater than the median? please select the …
C. 50%
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determine which of the four levels of measurement (nominal, ordinal, in…
Ratio
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find the coordinates of p that represent the weighted average for the g…
\(P=(0.6,4.2)\)
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a student takes ten exams during a semester and receives the following …
a.
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fill in the blank. a is any event combining two or more simple events. …
compound event
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identify the level of measurement of the data, and explain what is wron…
The data are at the nominal level of measurement. It is wrong to calculate the mean for these data because nominal - level data are categorical (the numbers are just labels) and d…
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listed below in order are prices (in dollars) for a big mac hamburger i…
The range is \(4.91\) dollars. The variance is \(2.27\) dollars². The standard deviation is \(1.51\) dollars. For the multiple - choice question: C. The range alone tells us that …
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the principle of redundancy is used when system reliability is improved…
C. Yes, because total malfunction would not be impossible, but it would be unlikely.
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read the excerpt. select the correct answer and press the submit button…
B. It gives more information about the first sentence.
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the two - way frequency table shows the current inventory of hardwood t…
\(P(\text{maple})\cdot P(1\times2)=\frac{1}{15}\approx0.067\) The events “choosing a maple board” and “choosing a \(1\times2\) board” are independent. A maple board has the same p…
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a school creates a histogram representing the individual travel times f…
The median time is less than 25 minutes.
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the graph represents a mechanics labor costs for a given number of hour…
All repairs requiring 1 hour or less have the same labor cost.
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read the passage from animal farm. on the third sunday after snowballs …
Snowball is used as a scapegoat; Squealer uses glittering generalities to describe Napoleon's tactics.
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based on the scatter plot below, which i better prediction for x when y…
\(4\)
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the given jar contains yellow (y), blue (b), and red (r) balls. anne ra…
The odds against blue or yellow are \(6\) to \(5\).
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the histogram shows the weights, in pounds, of checked luggage on a fli…
The mean is most likely about 28 pounds.
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find the area of the shaded region. the graph depicts the standard norm…
For the first problem (area to the left of \(z = 0.66\)): \(0.7454\) For the second problem (area between \(z = 0\) and \(z=0.7\)): \(0.7580 - 0.5=0.2580\)
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the overhead reach distances of adult females are normally distributed …
a. \(0.1230\) b. \(0.7917\) c. B. The normal distribution can be used because the original population has a normal distribution.
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the population mean and standard deviation are given below. find the in…
The probability is $0.5000$. For the multiple - choice part: A sample mean is considered unusual if the probability of obtaining it (or a more extreme value) is less than $0.05$. …
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a population has a mean $mu = 79$ and a standard deviation $sigma = 20$…
\(\mu_{\bar{x}} = 79\) \(\sigma_{\bar{x}}\approx1.226\)
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sam kept track of the number of problems he was assigned for his math h…
The data is symmetric and shows that half of the assignments contained 15 problems or fewer.
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steve determined the number of states each of his friends has visited n…
The data is skewed right and shows that half of Steve’s friends have visited 10 to 40 states.
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marisa recorded the number of hours she babysat each day last summer. s…
The data is skewed and shows that she was equally likely to work more than 3.5 hours or less than 5 hours.
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which sample fairly represents the population? select two options. usin…
- Sending a mandatory and confidential e - mail survey to every tenth employee of a company to determine overall job satisfaction. - Taking a poll in the main hallway between clas…
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when randomly selecting an adult, a denotes the event of selecting some…
\(P(A)\) represents the probability of selecting an adult with blue eyes. \(P(\overline{A})\) represents the probability of selecting an adult who does not have blue eyes.
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a mini - golf course is determining the par score for each of its holes…
The mean is the best choice because the data is nearly symmetrical.
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6.4.3 test (cst): data and mathematical modeling by visual inspection, …
A. Quadratic
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6.3.3 quiz: nonlinear models by visual inspection, determine the best -…
C. Exponential
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by visual inspection, determine the best - fitting regression model for…
C. Exponential
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read the passage. then answer the question. australia is known for its …
C. wind, rain, and the sun
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about 5% of hourly paid workers in a region earn the prevailing minimum…
(a) \(0.0000\) (b) \(0.2510\) (c) \(0.9989\)
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a binomial experiment is given. decide whether you can use the normal d…
C. No, because \(nq<5\).
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use the information to construct 90% and 99% confidence intervals for t…
D. You can be 90% confident that the population mean commute time is between the bounds of the 90% confidence interval, and 99% confident for the 99% interval.
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you are given the sample mean and the population standard deviation. us…
\((71.52,130.48)\)
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the production supervisor at a particular office products company finds…
\(y = 400\). The ordered pair is \((0,400)\). This means that if no chairs (\(x = 0\)) are produced, then \(400\) desks (\(y = 400\)) can be manufactured, since \(4\times0+8\times…
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an automatic coffee machine dispenses cups of coffee whose volume per c…
A. One - Sample T test output.
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the dean of the engineering school at a technical university wants to e…
C. \(2.33\)
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question 4 values of the standard normal random variable are measured w…
in the number of standard deviations from the mean.
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the area under the normal curve between ( z = 0 ) and ( z = 1 ) is ____…
greater than
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excited, i snuck to my bedroom door to watch. my mother stopped prepari…
"Some people give up. Not you"