Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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1) data set: 5, 2, 8, 4, 7, 10, 13, 12, put data in order: ____________…
Put Data in Order: $2,4,5,7,8,10,12,13$ Median: $7.5$ Upper Quartile: $11$ Lower Quartile: $4.5$ IQR: $6.5$
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data set: 23, 18, 17, 9, 21, 27, 12, 14, 13, 16 put data in order: 9, 1…
Median $= 17$, Lower Quartile $= 12.5$, Upper Quartile $= 22$, $IQR = 9.5$
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context clues determine the meaning of the bolded words in each example…
| Text Evidence | Context Clue | What I think the word means | Dictionary Definition | |--|--|--|--| | Greg, except for an involuntary tremor in his knees, stood stock still. | Th…
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chapter 3 - 4 practice test due sun sep 23, 2025 11:59pm attempt 1 in p…
Mean: $12.54$ Variance: $3.8284$ Standard Deviation: $1.9566$ Expected Value (same as mean for discrete random variable): $12.54$
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5. solve the following by factoring. be sure to state the zeros/x - int…
a) For \(9n^{2}-25\), zero/x - intercepts are \(n =-\frac{5}{3}\) and \(n=\frac{5}{3}\); for \(4x^{2}+20x=-25\), zero/x - intercept is \(x =-\frac{5}{2}\) b) For \(5x^{2}-4x + 11 …
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1) data set: 5, 2, 8, 4, 7, 10, 13, 12. put data in order: ____ median …
Put Data in Order: $2,4,5,7,8,10,12,13$ Median $=7.5$ Upper Quartile $=11$ Lower Quartile $=4.5$ IQR $=6.5$ ### 2. Second data - set: 23, 18, 17, 9, 21, 27, 12, 11, 13, 16
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use the following probabilities to answer the question. round to 4 deci…
$0.1111$
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79% of all bald eagles survive their first year of life. give your answ…
a. $0.137$ b. $0$ c. $1$ d. $0.874$
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read the paragraph. when you are writing, try to incorporate interestin…
include
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2. test scores, out of 100 points 92 84 95 77 74 80 95 70 66 73 68 90 7…
| Interval | # of values | | ---- | ---- | | 50 - 59 | 1 | | 60 - 69 | 4 | | 70 - 79 | 12 | | 80 - 89 | 4 | | 90 - 99 | 6 |
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2. test scores, out of 100 points 92 84 95 77 74 80 95 70 66 73 68 90 7…
| Interval | # of values | |--|--| | 50 - 59 | 1 | | 60 - 69 | 4 | | 70 - 79 | 12 | | 80 - 89 | 3 | | 90 - 99 | 7 |
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79% of all bald eagles survive their first year of life. give your answ…
a. $0.139$ b. $0.247$ c. $0.456$ d. $0.910$
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consider the discrete random variable x given in the table below. calcu…
$\mu = 13.9400$ $\sigma^{2}=39.9164$ $\sigma = 6.3179$ The expected value of $X$ is $13.9400$
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directions: create a histogram for each set of data. for the first prob…
| Interval | # of values | |--|--| | 1 - 20 | 0 | | 21 - 40 | 4 | | 41 - 60 | 6 | | 61 - 80 | 6 | | 81 - 100 | 5 |
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multiple - choice 1 point the spell worked! i knew la llorona was real,…
excited
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based on its use near the end of the text, which word most nearly means…
B. comfort
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b. what is the expected number of occurrences in three time periods? 6 …
0.1040
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2 $f(x)=\frac{2^{x}e^{-2}}{x}$ 3 $f(x)=\frac{2^{x}e^{2}}{x!}$ equation …
$0.1377$
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a. which of the following is the appropriate poisson probability functi…
a. Equation #1 b. 6 c. Equation #3 d. 0.2707 e. 0.1055
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consider a poisson distribution with a mean of two occurrences per time…
a. 1. $f(x)=\frac{2^{x}e^{-2}}{x!}$ b. 6 c. 3. $f(x)=\frac{6^{x}e^{-6}}{x!}$ d. 0.2707
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reread the sentences from the passage. today, bataclan has given away n…
fans and friends
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section 6.1 homework score: 15.99/21 answered: 16/21 question 21 determ…
Discrete
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section 6.1 homework due monday by 11:59pm points 21 submitting an e se…
Continuous
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section 6.1 homework score: 13.99/21 answered: 14/21 question 19 is thi…
Continuous
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you want to measure traffic on ca-283 n/wildwood ave bridge during the …
The number of cars that use the bridge in one hour, The total number of cars that cross the bridge
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identify the histogram for the probability distribution below. |x|p(x)|…
The first histogram shown in the image.
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question 2 what key elements are essential in the literal meaning of a …
B. character, setting, plot
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question 1 what does the literal meaning of a text refer to? only chara…
What actually happens in a story on the surface
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select the correct histogram for the probability distribution: |x|p(x)|…
The first histogram.
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use the affix list as a reference to fill in the table below with clues…
Root Word: obscure Suffix: none
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the ohio lottery has a game called pick 4 where a player pays $1 and pi…
| \(X\) | \(P(X)\) | |---|---| | \(-1\) | \(0.9999\) | | \(2100\) | \(0.0001\) |
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c) which of the following is the correct interpretation of the expected…
If you play the Ohio lottery many times, you can expect to win - 0.79 dollars per game. This implies that on average, per game, you will lose 0.79 dollars.
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b) what are your expected winnings? round final answer to 2 decimal pla…
b) The expected winnings are - 0.79 dollars. This means that on average, each time you play the Ohio lottery, you will lose 0.79 dollars. So over many plays, you can expect to win…
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for the computer to grade this one correctly make sure that your x valu…
-0.79
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section 6.1 homework score: 11.28/21 answered: 11/21 question 15 the oh…
| \(X\) | \(P(X)\) | | ---- | ---- | | \(-1\) | \(0.9999\) | | \(2100\) | \(0.0001\) | The expected winnings are \(-0.79\)
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c) if you were to draw a histogram for the number of heads, what shape …
d) Mean number of heads: 1.500, no units (it's a pure number in this context) e) Standard deviation of number of heads: 0.866, no units (it's a pure number in this context)
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un mariscal de campo lanza un pase incompleto. la altura del balón en e…
La solución -0.2 s se puede eliminar porque el tiempo no puede ser un valor negativo.
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f) find the probability of having two or less heads.
\(\frac{7}{8}\)
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which of the following is the correct symbol for the standard deviation…
$\sigma$
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e) find the standard deviation for the number of heads. round final ans…
If \(n = 10\), the standard deviation is approximately \(1.581\), units: number of heads.
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which of the following is the correct interpretation of the mean? selec…
If you flip a coin 3 times over and over, you can expect to get an average of 1.5 heads for every 3 flips
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d) find the mean number of heads. round final answer to 3 decimal place…
0.500, number of heads
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c) if you were to draw a histogram for the number of heads, what shape …
Bell - shaped
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b) write the probability distribution for the number of heads. make sur…
| \(X\) | \(P(X)\) | | ---- | ---- | | \(0\) | \(\frac{1}{8}\) | | \(1\) | \(\frac{3}{8}\) | | \(2\) | \(\frac{3}{8}\) | | \(3\) | \(\frac{1}{8}\) |
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suppose you have an experiment where you flip a coin three times. you t…
a) rv $X$ = the number of heads flipped when you flip a coin three times c) Symmetric d) 1.5
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question 7 of 10 instead of 10 percent, juan plans to pay 20 percent as…
D. A higher down payment means he will have more equity.
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the student council is hosting a drawing to raise money for scholarship…
$-7.89$
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suppose that you are offered the following \deal.\ you roll a six - sid…
$1.67$
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a pair of fair dice is tossed. define the events a and b as follows. co…
$P(A)=\frac{11}{36}$, $P(B)=\frac{1}{6}$, $P(A\cap B)=\frac{1}{18}$, $P(A\cup B)=\frac{5}{12}$, $P(A^{C})=\frac{25}{36}$
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suppose that you are offered the following \deal.\ you roll a six sided…
a. | $X$ | $P(X)$ | | ---- | ---- | | -10 | 0.3333 | | 5 | 0.6667 | b. $0$
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section 6.1 homework score: 8.67/21 answered: 9/21 question 12 suppose …
a. | $X$ | $P(X)$ | | ---- | ---- | | - 10 | $0.1667$ | | 5 | $0.6667$ | | 7 | $0.1667$ | b. $-\$7.17$ c. No.
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section 6.1 homework score: 8.67/21 answered: 9/21 question 12 suppose …
a. | X | P(X) | |----|----| | - 10 | $\frac{1}{6}$ | | - 5 | $\frac{2}{3}$ | | - 3 | $\frac{1}{6}$ | b. -$5.50$ c. If you play many games, on average, you will lose $5.50$ per gam…
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score on last try: 0.25 of 1 pts. see details for more. at least one sc…
$10.37$
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section 6.1 homework score: 7.92/21 answered: 9/21 question 11 score on…
$\sigma^{2}=14.47$ $\sigma = 3.80$
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section 6.1 homework due monday by 11:59pm points 21 submitting an exte…
$\mu = 10.37$, $\sigma^{2}=14.47$, $\sigma = 3.80$
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find the standard deviation of this probability distribution. give your…
$1.14$
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section 6.1 homework score: 5.67/21 answered: 6/21 question 9 |x|p(x)| …
$2.2$
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the distribution of the tuitions, fees, and room and board charges of a…
The sample mean is $\$20864.88$ and the sample standard deviation is $\$2669.57$.
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a local bakery has determined a probability distribution for the number…
Probability of selling 15 cheesecakes: 0.33 Probability of selling at least 10 cheesecakes: 0.78 Probability of selling 5 or 15 cheesecakes: 0.45 Probability of selling 25 cheesec…
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data were collected from a survey given to graduating college seniors o…
a. \(0.753\) b. \(0.731\) c. \(0.11\)
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data were collected from a survey given to graduating college seniors o…
a. \(0.753\) b. \(0.529\) c. \(0.09\)
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data were collected from a survey given to graduating college seniors o…
a. $0.753$ b. $0.731$ c. $0.146$
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d. the probability of x being no less than a: p(x ≤ a) p(x > a) p(x = a…
d. $P(X\geq a)$ e. $P(X > a)$ f. $P(X = a)$
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each data pair shown is of the form below: (years since purchase, value…
6019
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a. the probability of x being no more than a: p(x ≥ a) p(x = a) p(x ≤ a…
a. $P(X\leq a)$ b. $P(X\geq a)$ c. $P(X\leq a)$ d. $P(X\geq a)$ e. $P(X > a)$ f. $P(X = a)$
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section 6.1 homework score: 2/21 answered: 2/21 question 5 complete the…
0.2
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section 6.1 homework score: 1/21 answered: 1/21 question 4 given a surv…
true
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section 6.1 homework score: 0/21 answered: 0/21 question 3 if two six -…
A. false
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determine whether this table represents a probability distribution. |x|…
Yes, it is a probability distribution
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section 6.1 homework score: 0/21 answered: 0/21 question 1 let x repres…
X is a random variable
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the correlation coefficient for the linear regression of the enrollment…
$0.996$
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the accompanying venn diagram describes the sample - space of a particu…
a. $P(A)=0.4$, $P(B)=0.3$ b. $P(A)=0.6$, $P(B)=0.2$
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a number cube with faces labeled 1 to 6 is rolled once. the number roll…
(a) 6 (b) 2,4,5,6 (c) 1,3,5
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in the 1960s, filipino and latino farmworkers in california went on str…
boycott
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multiple choice 10 points what does biased information mean? a. the aut…
c. The author has placed their own perspective into the writing.
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select the word that means very sad and hopeless. aspiring writers and …
despondent
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in robert louis stevensons book the strange case of dr. jekyll and mr. …
Antagonist
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select the word that means having a huge appetite. the shrew is a tiny,…
voracious
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select the word that means a state of resting. mary cassatt was a ninet…
repose
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the table summarizes the distribution of age and assigned group for 90 …
B. \(\frac{1}{4}\)
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the table summarizes the distribution of age and assigned group for 90 …
B. $\frac{1}{4}$
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the puppy was weighed again at 9 months old and weighed 52 pounds. data…
A. 5.9
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excited her - a picture book called stevie, by john steptoe, about an a…
jacqueline was especially grateful for authors who wrote about black girlhood. Reading books written by people who were black girls to her felt very important to Jacqueline.
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home > leaked exams > august 2025 international form a (complete exam) …
C. 5
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for how many of the 9 data points is the actual y - value greater than …
7
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which of the following statements must be true? i. the median of data s…
D. Neither I nor II
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the distribution of the tuitions, fees, and room and board charges of a…
$20864.88$
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in france, from 1643 - 1715, king louis xiv ruled as king. * 1 point de…
1. B. Monarchy 2. A. Theocracy 3. B. Democracy
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5. choose the best answer. just because you are good at something does …
A. enjoy
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evaluate $sigma=sqrt{\frac{sum (x - mu)^2}{n}}$ given $mu = 7.32$, $n =…
$0.74$
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evaluate $\frac{sum z}{100}$ |z| - 2056| - 2674| - 2845| - 2913| - 2847…
$-199.3$
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26. what does it mean to \aim high\ in steering? a. to look at the tops…
26. B. To look far ahead when you drive. 27. B. To show where you must stop for a stop sign or red light. 28. C. Shift into "park" and turn off the engine. 29. C. 1 year 30. B. To…
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1. what does a red \x\ lane signal mean? a. the lane is for emergency v…
1. C. Drivers may not use the lane. 2. C. 1 - year suspension 3. B. 3 years 4. B. In an emergency. 5. C. 0.18 g/dL
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question 6 of 6 recovery is possible but it is a process. this means re…
B. people may need support to continue their recovery
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kennedy and the cold war instruction active preventing nuclear war read…
His focus is on peace with the communists rather than on defeating them.
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the block of text below, taken from an evaluation of a shopping website…
Nevertheless, Polyvore has a couple shortcomings.
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a large movie - theater tracked its total number of tickets sold each d…
4645
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all guided lecture sheets (gls) must be submitted to gradescope in thei…
a. $(g\circ f)(x)=-\frac{3}{\sqrt{2 - 4x}}$ b. $(-\infty,\frac{1}{2})$
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linear equations w/ distribution (lev 1) score: 4/5 penalty: none quest…
$y=1$
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linear equations w/ distribution (lev 1) score: 3/5 penalty: none quest…
$y = 3$