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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a lock consists of 3 dials, where each dial has 4 letters. what is the …
\(\frac{1}{64}\)
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for each spinner below, calculate the expected value
\(3.5\)
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college graduates starting salaries a recent survey found that the aver…
\(P(40000 < X < 50000)=0.5013\)
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college graduates starting salaries a recent survey found that the aver…
$0.1190$
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nico owns 11 instructional piano books. two are beginner books, six are…
\(\frac{6}{121}\) (the second option)
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the manager of a grocery store reports that there is a 12 percent chanc…
10.0 percent
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a survey was taken of children between the ages of 10 and 17 about how …
Out of the 97 children who have 1 sibling, 40 of them do not have a pet.
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a survey finds that 48% of people identify themselves as fans of profes…
- \(P(F|C) = 0.75\) - \(P(C\cap F)=0.09\) - \(P(C\cap F)=P(F\cap C)\)
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a survey asked about the number of people who eat breakfast almost ever…
\(\frac{53}{64}\)
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information about how the students at vista view high school got to sch…
111
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belleville high school offers classes on three different foreign langua…
A and B are independent events because \(P(A|B)=P(A)\)
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a prize bag contains four country music cds, eight pop music cds, and f…
0.07
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find the $z$ value that corresponds to the given area in the figure bel…
\(z = 0.76\)
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the weather report states that the probability it will rain on wednesda…
# Explanation: ## Step1: Convert percentages to decimals The probability of rain on Wednesday \(P(W)=30\% = 0.3\), and the probability of rain on Saturday \(P(S)=60\%=0.6\). ## St…
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college graduates starting salaries a recent survey found that the aver…
$P(40000 < X < 50000)=0.5389$
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the spinner is equally likely to land on any of the five sections. what…
\(\frac{3}{5}\) (the third option)
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consider the following events a. the burrito is a chicken burrito. b. t…
B and C
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juanita has a storage closet at her shop with extra bottles of lotion a…
\(P(\text{shower gel}|\text{scented}) = 42\%\) (the third option)
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part 2 of 2 (b) mean = 26.6 standard deviation =
$2.8$
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in the distributions shown, state the mean and standard deviation for e…
Mean = \(76.1\), Standard deviation = \(7.3\)
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the scores on a mathematics exam have a mean of 68 and a standard devia…
C. 90.5
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find the indicated value. $z_{0.09}$ 1.6954 1.3408 0.9154 0.6128
B. \(1.3408\)
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find the area under the shaded region. the graph depicts the standard n…
0.7224
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find the area under the shaded region. the graph depicts the standard n…
0.2776
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find the area under the standard normal distribution curve to the right…
0.3446
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2. in which line of poetry does the author use rhyme to connect words a…
Tanya climbed each rung of the corporate ladder, while those around her grew anxious and madder.
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find the area under the standard normal distribution curve between ( z …
0.1915
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1. which line of poetry has the clearest line of alliteration? with sor…
1. Is whispers flew like the wings of wrens. 2. When the child grew sad, she also became mad. 3. words or phrases used more than once.
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prison education in a federal prison, inmates can select to complete hi…
$0.831$
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3. which of the following is a metaphor? □ an obvious exaggeration □ a …
3. an implied comparison without using like or as 4. a comparison between two unlike things using like or as 5. a more imaginative meaning of a word
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multiple choice: (please highlight your answers) 1. which of the follow…
1. the feelings suggested by a word 2. an obvious exaggeration
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3. which word means “the people, animals, and other figures in a story”…
3. A. characters 4. D. Story elements help a reader understand the meaning of a story.
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1. which of the following is plot? a. the sequence of events in a story…
1. A. the sequence of events in a story 2. A. setting
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prison education in a federal prison, inmates can select to complete hi…
$0.805$
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teachers at newport elementary school asked students to name their favo…
$14$
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when salome, in elizabeth carys the tragedy of mariam, says \i mean not…
d. None of the above.
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select the word that means lacking social grace. what are good manners?…
gauche
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gift baskets the gift basket store has the following premade gift baske…
\(0.688\)
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an advertising company polled a group of high schoolers about how much …
100
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we watch and we hope as we see positive changes taking place. there are…
- Rhetorical Device: Metaphor - Effect of the Rhetorical Device: It makes the concept of positive change vivid, understandable, and presents it as a natural, stable, and life - gi…
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the table shows the total personal income in a country (in billions of …
\(y = 0.504x^{2}+ 100.305x + 411.7\)
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find the power function that models the data in the table below. the po…
The power function is \(y = 2.5x^{0.5}\)
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find the power function that models the data in the table below. the po…
The power function is \(y = 3.1x^{0.6}\)
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which statement best compares the shapes of the distributions of the nu…
The distribution for class 1 appears to be skewed right and the distribution for class 2 appears to be symmetric.
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the boxplot below displays the arm spans for 44 students. which of the …
\(143,162,168,180,202\)
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what do we mean by the separation of ownership from control in large co…
First question: C. Shareholders own the corporation, but it is controlled by managers. Second question: A. The agents (managers) may pursue their own interests rather than the int…
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what do we mean by the separation of ownership from control in large co…
C. Shareholders own the corporation, but it is controlled by managers.
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thirteen students in a statistics class were asked how many siblings th…
The box - plot where the box is centered around \(3\) (median), from approximately \(2.5\) (lower quartile) to \(5\) (upper quartile) with whiskers extending to \(0\) and \(6\) (a…
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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 stemplot below displays the arm spans, in centimeters, for 20 stude…
There are no outliers.
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which of the following is used to identify outliers in a set of data? 1…
1.5(IQR)
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the five - number summary of a data set is given below. minimum: 3 q₁: …
6 (the third option)
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the five - number summary for the lengths of songs, in minutes, perform…
Yes, 7.5 and 9.2 are outliers.
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the five - number summary of a data set is given below. minimum: 3 q₁: …
4
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the parallel dotplots below display the number of hours spent studying …
There is a larger standard deviation in the distribution of the number of hours spent studying for calculus.
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some teenagers collected trash for a beach cleanup. the data for the nu…
4.66 pounds
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without making any calculations, which distribution of data has the sma…
\(1,1,1,1,1,1\)
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in a recent survey, students were asked how long they play video games …
The middle half of the video game data has a range that is 43 minutes wide.
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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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which of the following statements is true about the iqr, range, and sta…
The IQR is the most resistant to extreme values.
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a statistics student gave a survey to students which asked how many fir…
\(8\) first cousins (since \(10-2 = 8\))
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the parallel dotplots below display the girths (belly circumference) of…
The IQR for the distribution of girths is larger in female pigs.
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some teenagers collected trash for a beach clean - up. the data for the…
\(15\) pounds (the fourth option)
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but i hear its whistle shriekling. all night there isnt a train goes by…
The imagery used helps the reader see and hear what the author does.
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15. what does it mean to rationalize the denominator?
Rationalizing the denominator is the process of eliminating radicals from the denominator of a fraction by multiplying the numerator and denominator by an appropriate expression.
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describe and correct any error a student may have made when solving the…
The student made an error in the distribution of \(0.15\) on the left - hand side. The correct value after distributing \(0.15\) in \(0.15(y - 0.2)\) is \(0.15y-0.03\). The correc…
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question 1 (2 points) loss aversion is the tendency to do which of the …
C. Prefer avoiding losses rather than acquiring equivalent gains.
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a professor gives a science exam every semester. she conducted a simple…
76
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what percentage of the shape is blue? write your answer using a percent…
40%
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a construction crew is paving a road. the function graphed below shows …
(a) After the crew has been working for \(16\) weeks, the distance left to pave is \(70\) kilometers. (b) \(16\); \(70\)
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use the accompanying venn diagram, which shows the cardinality of each …
\(25\)
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in a survey, cell phone users were asked which ear they use to hear the…
A. Yes, the table shows a probability distribution.
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read the quotation from booker t. washingtons 1895 atlanta compromise s…
Maintaining an individual and racial identity does not mean all people cannot work together.
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in hopes of raising more funds for arts education, some parents in the …
\(5\)
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alejandro wants to determine the average shoe size of all of the male s…
every member of the boys' basketball team
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you pick a card at random. without putting the first card back, you pic…
\(50.0\%\)
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find the area of the shaded region. the graph to the right depicts iq s…
\(0.2563\)
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you are dealt one card from a 52 - card deck. find the probability that…
\(\frac{43}{52}\)
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use the probability distribution to complete parts (a) and (b) below. t…
The mean is \(1.5\), the variance is \(1.5\), and the standard deviation is \(1.2\)
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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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the diagram below represents an experiment consisting of two independen…
\(\frac{8}{35}\)
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read this excerpt from chapter 1 of the scarlet letter using comprehens…
The prison and cemetery were built early, with the cemetery expanding in size from its original plot.
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sixteen cyclists were each asked the number of miles they biked last we…
0 to 3: 3, 4 to 7: 2, 8 to 11: 3, 12 to 15: 2, 16 to 19: 6.
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synonyms choose the word from this unit that is the same or most nearly…
1. heartbreaking 2. innocent 3. notice 4. banned 5. carry on 6. loss of life 7. fib 8. confrontational 9. wriggle 10. submerge
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read the passage from animal farm. meanwhile life was hard. the winter …
- It demonstrates hyperbole because Squealer exaggerates the figures related to positive developments of the farm. - It demonstrates repetition because Squealer reminds the animal…
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a pair of standard dice are rolled. find the probability of rolling a s…
\(\frac{1}{18}\)
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write the binomial probability and the normal probability for the shade…
The binomial probability \(P(4\leq X\leq8)\approx0.5876\), the normal - approximation probability \(P(3.5\leq X\leq8.5)\approx0.5865\). The results are about the same.
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the graph shows a distribution of data with a standard deviation of 6. …
It is within 2 standard deviations of the mean.
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in \mending wall,\ what is the figurative meaning of the speaker saying…
The speaker believes his neighbor’s ideas are misguided.
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the height of women ages 20 - 29 is normally distributed, with a mean o…
C. It is more likely to select a sample of 14 women with a mean height less than 66 inches because the sample of 14 has a higher probability.
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the root pens means weigh out or distribute. what does the word dispens…
a place where medicine is prepared and sold
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the root mal means bad or evil. what does the word malign mean? to give…
to tell harmful falsehoods about someone
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the root junc means join. what does the word juncture mean? a cheaply m…
a place where different paths come together
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look at the roots below. which one means drive or push? cede tele junc …
puls
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.4 determine the meanings of greek and latin roots p9m what does the ro…
good
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what does the word segregate mean? to cut down on the content of a spee…
to separate or isolate from others
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question 7 5 pts two variables are correlated (r = -0.64). what is the …
\(0.41\) (corresponds to the last option)
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what does the word prolific mean? pushy or assertive expressive or well…
E. productive or fruitful
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level l > s.4 determine the meanings of greek and latin roots p9m what …
time
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what does the word congregate mean? to assemble in large numbers to rep…
"to assemble in large numbers"