Statistik
Datenanalyse, Wahrscheinlichkeitsverteilungen und Hypothesentests.
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complete the sentence with the word that best fits the overall meaning …
prosperous
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complete the sentence with the word that best fits the overall meaning …
tiff
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complete the sentence with the word that best fits the overall meaning …
ebb
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complete the sentence with the word that best fits the overall meaning …
saturated
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complete the sentence with the word that best fits the overall meaning …
approaching
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complete the sentence with the word that best fits the overall meaning …
superfluous
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complete the sentence with the word that best fits the overall meaning …
captivated
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complete the sentence with the word that best fits the overall meaning …
persistence
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complete the sentence with the word that best fits the overall meaning …
mainstay
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complete the sentence with the word that best fits the overall meaning …
ominous
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complete the sentence with the word that best fits the overall meaning …
fluent
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practice quiz: chapter 07 creating a flexible organization 12 of 20 tot…
managers likely have narrow spans of management
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who is correct and why? shelby is correct because the line of best fit …
Ashik is correct because the points are a strong correlation to this nonlinear association.
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there is a positive linear correlation. there is a negative linear corr…
There is a nonlinear correlation.
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which describes the correlation shown in the scatterplot?
No correlation.
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which statement it true regarding their claims? adele is correct becaus…
Monte is correct because in both scatterplots, the \(y\) values decrease as the \(x\) values increase so both have a negative correlation.
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what is the probability that a random point on \\( \\overline{ab} \\) w…
\(0.13\)
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analyze the graph. determine what, if any, association there is. explai…
There is no association. The points in the scatter - plot are randomly distributed, with no discernible pattern (such as a positive linear, negative linear, or non - linear relati…
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which statement is true? a strong association implies a positive correl…
A positive correlation implies a positive slope.
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identify the level of association and correlation in the scatterplot. s…
weak association, negative correlation
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analyzing a scatterplot analyze the scatterplot to determine its charac…
weak association, positive slope
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determine if there is a correlation and slope for the scatterplot. posi…
positive correlation, positive slope
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determine if there is a correlation and slope for the scatterplot. posi…
no correlation
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draw a line to approximate the points on the graph. use the slope of th…
positive slope, positive correlation
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analyzing a scatterplot draw a line to approximate the points on the gr…
positive slope, positive correlation
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what is the probability that a random point on ab will be on cd? enter …
\( 0.20 \)
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identifying the correlation in a scatterplot identify the correlation i…
No correlation
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what is the probability that a random point on (overline{ab}) will be o…
\(0.45\)
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identify the correlation in the scatterplot. positive correlation negat…
Negative correlation
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what is the probability that a random point on ab will be on cd? enter …
\(0.47\)
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using the scatterplot, determine the association. linear association no…
No association
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using the scatterplot, determine the association. linear association no…
No association
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5. tanya is considering playing a game at the fair. there are three dif…
a. The expected value of Game 1 is \(0.1\), of Game 2 is \(2.05\), and of Game 3 is \(1\). b. Tanya should choose Game 2. Because the expected value of Game 2 (\(E(X_2) = 2.05\)) …
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4. claire is considering investing in a new business. in the first year…
a. Claire should invest. The expected value of the investment is \(\$300\) (calculated as \((-10000)\times0.2+0\times0.4 + 5000\times0.3+8000\times0.1 = 300\)), which means on ave…
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3. the point guard of a basketball team has to make a decision about wh…
a. The expected value for shooting a three - point shot is \(0.9\), and the expected value for passing (two - point shot) is \(0.96\). b. He should pass the ball. Since the expect…
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2. a game at the fair involves a wheel with seven sectors. two of the s…
| \(X_i\) | \(3\) | \(1\) | \(0\) | \(-1\) | | ---- | ---- | ---- | ---- | ---- | | \(P(X_i)\) | \(\frac{1}{7}\) | \(\frac{2}{7}\) | \(\frac{2}{7}\) | \(\frac{2}{7}\) |
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student guide (continued) 1. miguel is playing a game in which a box co…
a. \(P(X = 2)=\frac{1}{6}\), \(P(X=-1)=\frac{5}{6}\) b. Miguel's expected value from playing the game is \(-\frac{1}{2}\) (or \(- 0.5\))
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the probability of the number of defective circuit boards in a shipment…
The expected number of defective circuit boards for company A is \(1.36\). The expected number of defective circuit boards for company B is \(1.54\). Since \(1.36<1.54\), company …
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natalie can take one of her three friends with her on a trip to italy. …
No, one friend will have fewer numbers assigned.
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a bag contains four red marbles, three yellow marbles, and three purple…
- The probability you select a purple marble is \(\frac{3}{10}\). - \(P(\text{Red})+P(\text{Yellow})+P(\text{Purple}) = 1\) - The probability you select a green marble is \(0\).
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a proportional relationship has a constant rate. that means the distanc…
200
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the number of siblings each student at a softball game has is recorded.…
5 siblings
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a project is graded on a scale of 1 to 5. if the random variable, x, is…
3
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6. read the following sentences from the text. \the first big sit - in …
A. would not do something ### 7.
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a family has two children. if b represents a boy and g represents a gir…
The first table (where \(X = 0\), \(P_X(x)=0.25\); \(X = 1\), \(P_X(x)=0.5\); \(X = 2\), \(P_X(x)=0.25\)) is the correct probability distribution.
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a spinner contains four sections: red, blue, green, and yellow. joaquin…
The first probability distribution (with \(P(X = 0)=0.5625\), \(P(X = 1)=0.375\), \(P(X = 2)=0.0625\)) is correct.
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which of the following represents a valid probability distribution? pro…
Probability Distribution B.
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taylor surveys students in one grade level who own at least one pet. sh…
The first probability - distribution graph (where \(P(X = 1)\approx0.3\), \(P(X = 2)=0.5\), \(P(X = 3)\approx0.1\), \(P(X = 4)\approx0.1\)) is the correct probability distribution…
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a spinner is divided into two equal parts, one red and one blue. the se…
The first table (with \(P_X(0) = 0.25\), \(P_X(1)=0.5\), \(P_X(2) = 0.25\)) is the correct probability distribution.
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a teacher assigns a score from 1 to 4 to each student project. the tabl…
3
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which of the following probability distribution types has a mean, media…
symmetric
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the results and develops the probability distribution below for a rando…
\(1.50\)
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what type of data distribution is shown on the graph? symmetric coin to…
positively skewed
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what type of data distribution is shown on the graph? symmetric coin to…
equal to the median.
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what type of data distribution is shown on the graph? probability ( p(x…
positively skewed
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the probability distribution below is negatively skewed the mean is don…
less than the median.
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the graph shows the relationship between the length of time ted spends …
C. It takes Ted 16 hours to knit a scarf.
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the probability distribution below is negatively skewed symmetric x pos…
negatively skewed
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the probability distribution below is negatively skewed symmetric posit…
positively skewed
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shelia does quality control for a company that manufactures lawn mower …
\(0.04\)
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using the data from the table, what is p(3)? what is the mean of the pr…
The mean of the probability distribution is \(2.0\)
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using the data from the table, what is p(3)?
\(0.2\)
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the graph shows the relationship between the volume of coffee in a cup …
A. Cassie pours coffee at a rate of 50 milliliters per second.
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the fair spinner shown is spun 2 times. the set of possible outcomes ar…
\(0.375\)
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the fair spinner shown is spun 1 time. there are four possible outcomes…
\(\frac{1}{2}\)
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the fair spinner shown is spun 1 time. there are four possible outcomes…
\(\frac{1}{4}\)
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casey types at a constant speed, as shown in the following table. words…
C. Casey takes 5 seconds to type a word.
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the fair spinner shown is spun 1 time. there are four possible outcomes…
- The probability of each outcome is equal. - The outcomes have a uniform probability distribution.
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what type of data distribution is shown on the graph? the mean is the m…
greater than the median
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what type of data distribution is shown on the graph? the mean is done …
less than the median
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what type of data distribution is shown on the graph? negatively skewed…
negatively skewed
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solomon is 3d printing chess pieces. the table gives the amount of time…
A. It takes Solomon 16 minutes to print each chess piece.
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the graph on the right shows the theoretical probability of getting a g…
\(5\)
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in a survey, 100 people were asked how many car accidents they had in t…
\(0.080\)
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question 10 1 pts a random sample of 250 sports fans are surveyed, and …
\(0.060\)
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a large random sample of car owners is surveyed in order to estimate th…
We are 95% confident that the interval from 0.318 to 0.402 includes the population proportion of car owners who waited more than 45 minutes for their most recent oil change.
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a coin is tossed three times, with possible outcomes: {hhh, hht, hth, t…
The correct graph should have bars at \(x = 0\) with height \(0.125\), at \(x = 1\) with height \(0.375\), at \(x = 2\) with height \(0.375\), and at \(x = 3\) with height \(0.125…
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a coin is tossed two times. the set of outcomes is given as ( s={hh,ht,…
\(a=\frac{1}{4}\), \(b = \frac{1}{2}\), \(c=\frac{1}{4}\)
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a political scientist surveys a random sample of eligible voters and co…
The second confidence interval will likely have the same width as the first confidence interval because the sample sizes and confidence levels are identical.
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to learn more about the proportion of college students who drink coffee…
The interval describes a range of plausible values for the actual proportion of all college students who drink coffee at least once per day.
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researchers survey 1000 grocery store customers and find that, when giv…
None of the above answer options are correct.
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a random sample of 715 adults is surveyed in order to investigate how c…
The value of \(\hat{p}\) is \(0.80\) because this is the proportion that was calculated based on the sample of data.
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to estimate the proportion of all adults who take daily vitamin d suppl…
If the sampling method were to be repeated many times, about 90% of the resulting confidence intervals would contain the true population proportion.
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if two fair dice are rolled, there are two different ways to roll a sum…
For the number of ways to roll a sum of 4: 3. For the probability question: B. different.
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the proportional relationship between the number of hours a business op…
A. The \(y\) - coordinate of point \(A\) represents the total cost of electricity when the business operates for 4 hours. B. The total cost of electricity is \(\$20\) when operati…
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if two fair dice are rolled, there are two different ways to roll a sum…
3
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a fair die is a cube with number 1 through 6 on the sides, represented …
\(\frac{1}{6}\)
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the theoretical probability of an event is the number of ways an event …
The theoretical probability of selecting a king is \(\frac{1}{13}\). The experimental probability of landing on heads is \(\frac{9}{20}\)
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fill in the blank a local ice cream shop tracked the high temperature f…
weak positive
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six girls and four boys have entered the science fair. first, second, a…
10%
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six sophomores and 14 freshmen are competing for two alternate position…
\(\frac{_{6}C_{2}}{_{20}C_{2}}\) (First option)
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a standard deck of 52 playing cards contains 13 cards in each of four s…
0.1275
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a student wants to check six websites. four of the websites are social …
0.267
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using a linear model, which equation best models the set of data in the…
\(y = 1.5x+5.5\)
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a student must choose to participate in two different events during fie…
0.227
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determine which scenario could be found using ( p(a)=\frac{(_{5}c_{2})(…
probability of choosing two male and one female committee members from a group containing five men and eight women
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a website randomly creates an initial password for people when they fir…
The approximate probability that the first letter of the password will be'm' is \(0.03846\)
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a deck of playing cards has four suits, with thirteen cards in each sui…
The first statement (The total possible outcomes can be found using \(_{52}C_{5}\)) and the fifth statement (The probability of choosing five clubs is roughly \(0.0005\)) are true.
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a bag contains eight yellow marbles, nine green marbles, three purple m…
\(P(Y\ and\ R)=\frac{(_{8}C_{1})(_{5}C_{1})}{_{25}C_{2}}\) (the second option)
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18 multiple choice 1 point the table below shows the amount of water, y…
The average rate, in gallons per minute, that water is draining from the tank.