统计与概率
数据分析、概率分布、假设检验与统计方法。
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the standard deviation of the sampling distribution of the sample mean …
B. \(n\) increases
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the standard deviation of the sampling distribution of the sample mean …
B. \(n\) increases
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determine the critical pearson correlation coefficient for the table be…
\(0.917\)
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in 5 - card poker, played with a standard 52 - card deck, _ { 52 } c _ …
\(0.999526\)
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question 14 this word means to reach or arrive at. hover elude attain p…
attain
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you are dealt one card from a 52 - card deck. find the probability that…
\(\frac{10}{13}\)
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you are dealt one card from a 52 - card deck. find the probability that…
\(\frac{12}{13}\)
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question 4 of 10 what must be present in order to say that a correlatio…
C. A relationship between variables
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a car increases, then decreases, its speed. which table could represent…
The second table (with speed values \(45,47,49,48,47\))
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determine whether the statement is true or false. if the statement is f…
B. False, if the odds in favor of event \(E\) are \(a\) to \(b\), then the probability is \(P(E)=\frac{a}{a + b}\)
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this word means able to catch fire eas moor propel jeopardy flammable
flammmable
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determine whether the following statement is true or false. the odds ag…
The statement is **true** because the odds in favor of \(E\) are found by taking the probability that \(E\) occurs and dividing by the probability that \(E\) does not occur and th…
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question 8 this word means of the highest quality: splendid. aloft supe…
B. superb
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the table shows the total distance that myra runs over different time p…
increasing
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proportional relationship and slope practice {hw} a beverage company bo…
The slope is \(60\). This means that the company bottles \(60\) drinks per minute.
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choose the best vocabulary word to go with each definition. question 7 …
propel
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determine whether the following statement is true or false. the probabi…
C. The statement is false because the probability that an event will not occur is equal to 1 minus the probability that it will occur.
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proportional relationship and slope practice {hw} possible points 10 er…
Erin needs \(0.75\) tablespoons of fruit punch mix for every \(1\) cup of water. This means the slope is \(0.75\).
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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.
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choose the best vocabulary word to go with each definition. question 6 …
pollute
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fill in the blank so that the resulting statement is true. if the odds …
\(\frac{a}{a + b}\)
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choose the best vocabulary word to go with each definition. question 5 …
stationary
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the graph below represents the distance of a dog from a trainer after a…
The dog stopped to lie down and obey the trainer's command.
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fill in each blank so that the resulting statement is true. the odds in…
The odds in favor of \(E\) can be found by taking the probability that \(E\) occurs and dividing by the probability that \(E\) does not occur.
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fill in the blank so that the resulting statement is true. if it is pos…
\(P(A)+P(B)-P(A\cap B)\)
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yara is an art student creating a bill writing a paper for history clas…
B. Yara began writing a new paper, deleted some of her words, took a break, and then began writing again.
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fill in each blank so that the resulting statements are true. if it is …
If it is impossible for events \(A\) and \(B\) to occur simultaneously, the events are said to be **mutually exclusive**. For such events, \(P(A\ or\ B)=P(A)+P(B)\).
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which excerpt from \lather and nothing else.\ is the best example of fa…
The first option: "The lather was drying on his face. I must hurry. Through the mirror, I took a look at the street."
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fill in the blanks so that the resulting statement is true. because ( p…
\(P(\text{not }E)=1 - P(E)\) and \(P(E)=1 - P(\text{not }E)\)
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the table shows the length of the tree that marge measured over an 11 -…
D. The tree decreased in height each month until the time period between month 9 and month 11.
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if a student guesses all answers on a 5 - question true/false quiz, wha…
B. \(0.03125\)
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first read: selection vocabulary identify the choice that best answers …
B. eliminate entirely
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what does the \ in the binomial probability formula represent? a. numbe…
d. Total number of trials
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in binomial probability, if the probability of success is 0.5 and the n…
d. \(0.375\)
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the graph below represents the speeds of kael and lynn as they run arou…
12
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question 1 this word means danger. jeopardy propel elude moor
jeopardy
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in binomial probability, what does \p\ stand for? a. probability of suc…
A. Probability of success on a single trial
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what does the \k\ in the binomial formula represent? a. probability of …
C. Number of successes in n trials
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based on its context, which meaning of the word articulate does the aut…
C. divided into distinct parts
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which of the following is a requirement for a binomial experiment? a. m…
B. Each trial has only two possible outcomes
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the graph below represents the speeds of kael and lynn as they run arou…
# Explanation: ## Step1: Identify the time intervals Lynn's speed is greater than Kael's from \(t = 2\) to \(t = 14\) and from \(t = 20\) to \(t = 28\). ## Step2: Calculate the du…
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which scenario can be analyzed using binomial probability? a. rolling a…
B. Flipping a coin 10 times to count the number of heads
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identify the choice that best answers the question. what is the most li…
D. preoccupied with holding on to money
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if the probability of rain on any given day is 40%, what is the binomia…
B. \(0.278\)
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assuming two hikers begin at a trail start, which scenarios must be tru…
- Melissa hiked up the trail for a longer period of time than Corey. - Melissa’s and Corey’s elevations were same at some time between 60 and 90 minutes. - Corey began his descent…
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the standard deviation of the sampling distribution of the sample mean …
C. \(n\) decreases
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binomial probability is the probability of obtaining a specific number …
1. successes 2. success; failure 3. \(n\) 4. \(p\)
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read the passage from sugar changed the world. with their victory, the …
B. They use a primary source to show that a song was spreading the idea of equality across the Caribbean. C. They use a secondary source to show that the idea of an enslaved peopl…
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amy and laura recorded the average gas mileage (mpg) of their vehicles …
Both Amy and Laura increased their gas mileage in the first two weeks.
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binomial probability is the probability of obtaining a specific number …
successes, success, failure, \(n\), \(p\)
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7 true or false 1 point in our class studies, you learned that the cour…
False
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a game of scrabble has 100 tiles, as shown to the right. the number of …
\(\frac{1}{80850}\)
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a game of scrabble has 100 tiles, as shown to the right. the number of …
\(\frac{1}{495}\)
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consider a political discussion group consisting of 6 democrats, 4 repu…
\(\frac{12}{35}\)
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consider a political discussion group consisting of 5 democrats, 6 repu…
\(\frac{15}{182}\)
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the phrase \all politics is local\ roughly means ________. the local co…
The local constituents tend to care about things that affect them
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9. a survey was given to people who owned a certain type of car. what p…
\(55\%\)
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the theoretical probability of drawing an ace from a deck of cards is: …
B. \(\frac{1}{13}\)
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if the theoretical probability of rain tomorrow is 30%, what is this ex…
A. 0.3
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you flip a coin 10 times and observe heads 7 times. how does this compa…
b. Empirical probability is higher than theoretical.
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in an experiment, you draw marbles 100 times, and the empirical probabi…
C. 40
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in a game, you spin a spinner with 8 equal sections. the theoretical pr…
d. \(\frac{1}{8}\)
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if the theoretical probability of an event is 0.25, what is the percent…
C. 25%
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what is the theoretical probability of flipping heads on a coin? a. 1.0…
d. 0.5
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elizabeth brought a box of donuts to share. there are two - dozen (24) …
\(\frac{1}{46}\)
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how many outcomes are there when rolling two six - sided dice? a. 18 b.…
C. 36
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what is the total probability of all possible outcomes for any event? a…
B. 1
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17. the following are scores for 6 students in mr. schulers math class.…
D. 210
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which of the following could explain a discrepancy between theoretical …
B. All of the above
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18. the table shows a restaurants cost per meal for each of the five ty…
A. \(\$5.40\)
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read the excerpt from \the most dangerous game.\ \i wanted the ideal an…
he is opposed to the idea of hunting humans.
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1 fill in the blank 1 point n weighted average what is the weighted ave…
\(\frac{9}{4}\)
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which excerpt from \the most dangerous game\ best portrays zaroff as ra…
"“Why should I not be serious? I am speaking of hunting.” “Hunting? General Zaroff, what you speak of is murder.”"
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a coin is tossed and a die is rolled. find the probability of getting a…
\(\frac{1}{6}\)
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what is the probability of obtaining two tails in a row when flipping a…
\(\frac{1}{4}\)
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guiding questions which of the following best describes mrs. mallards r…
B. She realizes that her husband's death means that she will be free and independent.
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you draw one card from a 52 - card deck. then the card is replaced in t…
\(\frac{1}{52}\)
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ch 23 we want to test whether proportions from two populations are diff…
D. \(H0:p1 = p2, Ha:p1 eq p2\)
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ch 23* in 2012, respondents to the general social survey were asked: \t…
\(H_0: p_M = p_F\) versus \(H_a: p_M eq p_F\)
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ch 23 in a pooled sample proportion, two samples are combined to estima…
True
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unit 3: the constitution era lesson 3: the constitutional convention vo…
- Bicameral: The Senate; distribute - Unicameral: one group - Unity: parts; together - Republic: elect leaders - Civil Discourse: respectful; disagree
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use the spinner shown. it is equally probable that the pointer will lan…
\(\frac{1}{12}\)
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determine whether each statement is true or false. if the statement is …
A. This statement is false. "And" probabilities can be determined using the formula \(P(A\ \text{and}\ B)=P(A)\cdot P(B)\) only if \(A\) and \(B\) are independent. Otherwise, they…
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question 15 1 pts ch 23 in a pooled sample proportion, two samples are …
0.450
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ch 23* in an experiment to learn if substance m can help restore memory…
may be inaccurate because some counts of successes and failures are too small.
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ch 23* in an experiment to learn if substance m can help restore memory…
Question 15: True
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ch 23 when comparing proportions from two populations, we make inferenc…
\(\hat{p}1 - \hat{p}2\) (assuming the third option in the original list which is \(\hat{p}1-\hat{p}2\) is the intended correct one as per the reasoning above. If the options are l…
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ch 23 when comparing proportions from two populations, we make inferenc…
\(0.592 - 0.54\)
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ch 23* in 2012, respondents to the general social survey were asked: \t…
The 90% large - sample confidence interval for the difference $p_M - p_F$ is about $0.033\pm0.038$
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what was christianitys appeal to the people of the roman empire? choose…
Jesus' teachings made many Romans feel their life had meaning. Christianity gave people hope for a better future--at least in the afterlife.
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ch 22 tv news program conducts a call - in poll about a proposed city b…
There is no way this sample can be viewed as an SRS of all TV news viewers, so we can't use this sample to estimate \(p\).
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fill in the blanks so that the resulting statement is true. the probabi…
The probability of event \( B \), assuming that event \( A \) has already occurred, is called the **conditional** probability of \( B \), given \( A \). This probability is denote…
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ch 22 tv news program conducts a call - in poll about a proposed city b…
Yes, because both \( np \) and \( n(1 - p) \) are greater than \( 15 \).
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38. how do you calculate the probability of two independent events occu…
d. Multiply their probabilities
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ch 22 eggs that are contaminated with salmonella can cause food poisoni…
\(0.2\%\) is a parameter and \(\frac{16}{200}\) is a statistic.
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fill in each blank so that the resulting statement is true. if the occu…
dependent; \(P(A)\times P(B|A)\)
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5 the stem and leaf plot shows the ages of 24 counselors at a summer ca…
A. 3 counselors are exactly 20 years old. B. 0 counselors are exactly 40 years old. C. The difference is \(54 - 17=37\) years.
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ch 22 eggs that are contaminated with salmonella can cause food poisoni…
\(0.80\pm0.0098\)
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ch 22* the proportion of drivers who use seat belts depends on characte…
The mean of the sampling distribution of the sample proportion is \(0.6\), so the answer is \(0.6\)
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fill in the blank so that the resulting statement is true. the probabil…
the event will not occur