Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
-
claim: the mean systolic blood pressure of all healthy adults is less t…
\(-0.33\)
-
given in the table are the bmi statistics for random samples of men and…
\(-0.518<\mu_1-\mu_2<5.475\)
-
given in the table are the bmi statistics for random samples of men and…
\(1.66\)
-
given in the table are the bmi statistics for random samples of men and…
D. \(H_0:\mu_1=\mu_2\), \(H_1:\mu_1 eq\mu_2\)
-
choose the best answers using the distance - time graph. three runners …
19. The first table (time (s): 2,4,6,8; distance (m):88,176,264,352) represents Line C. 20. Runner A.
-
tylers walk tyler was at the amusement park. he walked at a steady pace…
1. After \(40\) seconds, Tyler is \(50\) meters from the ticket booth. 2. (Since the process of filling the table and plotting is more of a graphical task, but for the distance at…
-
homestead act assimilation gilded age free enterprise transcontinental …
1. Homestead Act 2. Transcontinental Railroad 3. assimilation 4. Gilded Age 5. free enterprise
-
read the passage from sugar changed the world gandhi began to see that …
The evidence shows how Gandhi experimented with ways to assert one's dignity and be free.
-
4) match the descriptions with the terms. race ethnicity social constru…
- race: people who share physical appearance and social qualities - ethnicity: based on cultural groupings such as religion and traditions - social construct: a concept that peopl…
-
read the passage from sugar changed the world. on the day the coolies w…
Indians retained some of their individuality by being able to keep their names.
-
3) choose the best answer. which point of agreement in the compromise o…
- **Question 3**: agreeing to end federal involvement in race relations in the South - **Question 4**: - Hayes would remove federal troops from the South and end federal interfere…
-
2) choose the best answer. why were southern blacks still dependent on …
2) They lacked the financial means to invest in land of their own or even to buy their own tools. 3) Perpetual debt ensured that the workers would remain indebted to the landowner…
-
18. choose the best answer. what did andrew johnsons reconstruction pla…
18. It excluded Black representation. 19. scandals in the Grant administration allowed them to recapture Congress.
-
the coca-cola company, a fortune 500 company, actively seeks to increas…
B. Affirmative action
-
question 18 1 pts after a survey of its employees, a car manufacturing …
2396
-
suppose 9 orange and 3 blue identical objects are in a jar. a blindfold…
a) \(\frac{1}{4}\) b) \(\frac{8}{11}\) c) \(\frac{9}{11}\)
-
9) use the table to answer the following question. select the best answ…
hours
-
question 7 1 pts the sample space for rolling a six - sided die is ( s=…
a) \(\frac{1}{6}\) b) \(\frac{1}{2}\) c) \(\frac{1}{2}\)
-
question 7 1 pts the sample space for rolling a six - sided die is ( s=…
b) \(\frac{1}{2}\) c) \(\frac{1}{2}\)
-
question 6 1 pts suppose events e and f are mutually exclusive, with p(…
a) The odds for \(E\) are \(1\) to \(9\) b) The odds against \(E\) are \(9\) to \(1\)
-
question 5 1 pts suppose events e and f are independent, with p(f)=0.64…
a) \(1\) to \(3\) b) \(3\) to \(1\)
-
question 4 1 pts if ( p(e)=0.36 ), then calculate and find that (enter …
a) \(9\) to \(16\) b) \(16\) to \(9\)
-
given the following venn diagram: data answer the following questions b…
a) \( 0.74 \) b) \( 0.34 \) c) \( 0.3 \) d) \( 0.09 \)
-
traffic engineers are investigating the high rate of fatal accidents at…
\(0.4071\)
-
dear class, you have 80 minutes to complete this practice exam from the…
\(0.9\)
-
what does the m in smart goal stand for? o a. minimal o b. measurable o…
B. Measurable
-
backs on the real challenges that face us here and now. even if we can,…
We should not send humans to Mars because the costs and risks are too great.
-
interpret the least squares regression line of this data set. dan is a …
\(3.014\)
-
use the least squares regression line of this data set to predict a val…
\(44.924\)
-
interpret the least squares regression line of this data set. a reporte…
\(0.047\)
-
use the least squares regression line of this data set to predict a val…
\(8.274\)
-
coach leonard is responsible for recruiting male athletes to join the e…
\(0.041\)
-
find the equation for the least squares regression line of the data des…
\(y=-0.034x + 14.118\)
-
before beginning guitar lessons, jane already knew how to play 8 songs.…
After each month, she knows 2 more songs.
-
find the equation for the least squares regression line of the data des…
\(y = 205.674x+972.259\)
-
what does the slope mean in this situation? slope = \\frac{vertical dis…
Playing \(1\) more game(s) will add \(4\) more dollar(s) to the total cost.
-
interpret the least squares regression line of this data set. jasmine i…
\(0.005\)
-
find the equation for the least squares regression line of the data des…
\(y = 0.005x+20.976\)
-
interpret the least squares regression line of this data set. paula has…
\(1.747\)
-
find the equation for the least squares regression line of the data des…
\(y=-1.746x + 54.123\)
-
use the least squares regression line of this data set to predict a val…
\(11077\)
-
fans of the science fiction television show space cruiser zeta are host…
\(1.514\)
-
find the equation for the least squares regression line of the data des…
\(y = 1.629x+1082.784\)
-
jamal wants to determine how much bottled water he should stock in his …
\(184\)
-
6. jada and lin refill their water bottles at a drinking fountain after…
a. Jada's line. A proportional relationship graph passes through \((0,0)\), and Jada's line does. b. At time \(t = 0\) seconds, Jada's bottle has \(0\) mL of water. c. At time \(t…
-
question 20 (1 point) page 20 of 25 according to the bureau of justice …
B. 40%
-
question 10 (1 point) in what terms is the success of probation and par…
A. Recidivism
-
3. a bakery sells round loaves of bread and pans of rolls. the graph sh…
A. Both lines show a proportional relationship between the number of each type of bread and the number of servings. B. 2 pans of rolls can serve 28 people. E. A round loaf serves …
-
question 7 (1 point) in order to appreciate the difficulty of providing…
A. True
-
use the given information to fill in the number of elements for each re…
The number of elements in region \(x\) is \(10\), the number of elements in region \(y\) is \(11\), the number of elements in region \(z\) is \(18\), and the number of elements in…
-
the given contingency table lists the cross tabulation of whether adult…
\(923\)
-
the table to the right gives the amount of several farm products (in mi…
C. (Wheat, Rice)
-
homework question 25, 8.1.71 - be hw score: 88.46%, 23 of 26 points poi…
B. \(J = \varnothing\)
-
the top six genres of podcasts in the year 2016 are listed in the table…
A. \(F = \{\text{Sports, Comedy, News, Fashion}\}\)
-
sales (in millions of dollars) in a country at various eating and drink…
A. \(\{F, D\}\)
-
in this lesson, you will learn how to talk to the host or hostess, the …
1. h, 2. a, 3. e, 4. g, 5. d, 6. f, 7. c, 8. b
-
ap stats lesson 6.2 homework name 1. determine whether each of the foll…
a. Continuous random variable b. Discrete random variable c. Neither d. Continuous random variable
-
the actual probability of suffering injury, disease, death, or some los…
risk
-
find the standard deviation for the group of data items. 8, 9, 10, 11, …
$1.41$
-
find the standard deviation for the group of data items. 10, 11, 11, 11…
\(0.58\)
-
find the standard deviation for the group of data items. 3,4,5,6,7 the …
$1.41$
-
a risk assessment requires at least 3 things. two of these are hazard i…
Calculating the consequences of risk
-
find the standard deviation for the group of data items. 3,4,5,6,7 the …
$1.41$
-
find the standard deviation for the group of data items. 3,4,5,6,7 the …
\(1.41\)
-
determine whether the statement makes sense or does not make sense, and…
D. The statement does make sense because a large number of student scores would be piled up at the low end of the distribution, and few student scores would be at the high end.
-
determine whether the statement makes sense or does not make sense, and…
C. The statement does make sense because the median, or second quartile, is the 50th percentile.
-
using a random sample of 1412 tv households, acme media statistics foun…
We can be 95% confident that between \(58.44\%\) and \(63.76\%\) of all households watched the final episode of "Still Hanging On."
-
using a random sample of 1412 tv households, acme media statistics foun…
a. The margin of error is \(\pm2.54\%\) b. We are 95% confident that the percentage of TV households in the population who tuned into the final episode of "Still Hanging On" is be…
-
using a random sample of 1412 tv households, acme media statistics foun…
a. The margin of error is \(2.61\%\) b. We are \(95\%\) confident that the percentage of TV households in the population who tuned into the final episode of “Still Hanging On” is …
-
using a random sample of 1432 tv households, acme media statistics foun…
a. The margin of error is \(2.51\%\) b. We are \(95\%\) confident that the percentage of TV households in the population who tuned into the final episode of "Still Hungry On" is b…
-
a set of data items is normally distributed with a mean of 855 and a st…
\(759\)
-
a set of data items is normally distributed with a mean of 300 and a st…
\(375\)
-
a set of data items is normally distributed with a mean of 600 and a st…
\(840\)
-
scores on a dental anxiety scale range from 0 (no anxiety) to 20 (extre…
\(-0.5\)
-
scores on a dental anxiety scale range from 5 (no anxiety) to 30 (extre…
\(-0.25\)
-
a set of data items is normally distributed with a mean of 65 and a sta…
\(1.5\)
-
question 2 which of the following statements regarding jim crow laws is…
B. Jim Crow laws were enacted after the Civil War to give African Americans a vote. (This option is incorrect as Jim Crow laws were meant to suppress African - Americans, not give…
-
2015 > chapter 6: 6.5 - 6.7 quiz > quiz 6 use a graphing calculator to …
\(y\approx2.37\times1.89^{x}\)
-
week 1 2 3 4 5 6 7 8 laps 24 27 31 38 39 42 47 48 write the equation fo…
The equation of the best - fit line is \(y = 3.59x+20.85\). Keon should expect to swim about \(64\) laps in week \(12\).
-
robert pays for his family to go to the arcade. he pays an entrance fee…
5. The slope is \(\frac{3}{4}\), meaning the cost increases by \(\frac{3}{4}\) dollars per game. 6. The \(y -\)intercept is \(12\), meaning the entrance fee is \(12\) dollars. 7. …
-
what is the ratio of circles to squares? write your answer as a fractio…
$\frac{1}{2}$
-
click to correct the one capitalization error. in april 1961, the cia l…
The sentence has no capitalization error.
-
find the probability that the mean of a sample of 25 people is less tha…
Assuming \(\mu = 10\) and \(\sigma = 5\) (since they are not given in the problem, these are common values for illustration purposes. If actual values of \(\mu\) and \(\sigma\) ar…
-
population and the correction factor can be ignored. use the standard n…
\(0.9984\)
-
the average number of moves a person makes in his or her lifetime is 12…
$0.0016$
-
emails times spent by americans a survey found that the average time pe…
$0.5572$
-
what formula is used to gain information about an individual data value…
\(z=\frac{X - \mu}{\sigma}\)
-
a rocket is shot off from a launcher. the accompanying table represents…
The quadratic regression equation is \(y=-16x^{2}+176x - 10\). The height at \(x = 7.8\) seconds is \(389\) feet.
-
3 when a bond sells at a premium: multiple choice the bond pays no inte…
The contract rate is above the market rate.
-
find the z value that corresponds to the given area in the figure below…
\(-1.66\)
-
find the = value that corresponds to the given area in the figure below…
\(0.76\)
-
6. bad dotplot janie asked 10 friends how many photos they posted on in…
The intervals on the number line are not equal.
-
find the probability using the normal distribution: ( p(1.17 < z < 1.23…
\(0.0117\)
-
find the probability using the normal distribution: ( p(-1.72 < z < 1.9…
\(0.9334\)
-
find the probability using the normal distribution: ( p(z < -2.14) ). u…
\(0.0162\)
-
5. sugar high(er)? researchers collected data on 76 brands of cereal at…
a. Yes, the data supports the claim. The bottom shelf (shelf 1) has more cereals with high sugar content (e.g., many dots towards the higher end of the sugar scale) compared to th…
-
(a) make a scatter plot of the data in the table given to the right. (b…
\(y = 3.467x^{0.397}\)
-
3. looking at the old how old is the oldest person you know? prudential…
The distribution is left - skewed (negatively skewed).
-
2 customers at the gym pay a membership fee to join and then a fee for …
## Part A The slope means the cost per class. ## Part B The vertical intercept means the membership fee (the cost to join the gym).
-
find the area under the standard normal distribution curve to the right…
\(0.0049\)