統計と確率
データ分析、確率分布、仮説検定、統計手法。
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a state lottery randomly chooses 6 balls numbered from 1 through 44 wit…
D. The experiment is not binomial. B. The experiment is not binomial. C. The experiment is not binomial.
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a state lottery randomly chooses 6 balls numbered from 1 through 44 wit…
D. No, because the probability of success is different for each trial. D. The experiment is not binomial. B. The experiment is not binomial.
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when a new drug is created, the pharmaceutical company must subject it …
B. Not to conclude the drug is safe when, in fact, it is safe.
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111 108 104 110 117 100 108 112 108 105 a) complete the grouped frequen…
(a) The grouped frequency distribution is: | Temperatures (in °F) | Frequency | |----|----| | 98 to 102 | 2 | | 103 to 107 | 4 | | 108 to 112 | 4 | | 113 to 117 | 5 | (b) The hist…
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use the probability distribution to complete parts (a) and (b) below. t…
The mean is \(1.5\), so the average batch of \(1000\) machine parts has \(1.5\) defects. The standard deviation is \(1.2\), so the typical number of defects in a batch of \(1000\)…
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2. the graph below shows the number of miles a car has driven over time…
a. Yes, the number of miles driven is proportional to the amount of time. The graph is a straight line passing through the origin and the ratio \(\frac{y}{x}\) (miles per hour) is…
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read the passage from animal farm. which statement best summarizes the …
Some cannot recognize that they are being oppressed and lied to, even when faced with it firsthand.
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read the passage from animal farm. meanwhile life was hard. the winter …
Readers realize that Napoleon is more concerned about himself than the farm.
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quiz complete 1 2 3 4 5 6 7 8 9 10 which best describes why infrastruct…
It helps society meet basic needs.
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a spinner with 8 equally sized slices is shown below. (the 8 slices are…
\( 1 \)
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last week, travis and his brother, wayne, rode their bikes on the same …
Travis
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the table below gives the monthly increases in users (in thousands) ove…
(a) February (b) May
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the table below gives the monthly increases in users (in thousands) ove…
(a) February (b) April
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a student answers all 48 questions on a multiple - choice test by guess…
D. \(0.0823\)
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(a) compare the temperatures of city a and city b using <, >, or =. 81 …
(a) \(81> - 11\), At 6 a.m., City B was colder than City A. (b) \(5>-23\), At 6 a.m., City C was warmer than City E.
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the height of women ages 20 - 29 is normally distributed, with a mean o…
The probability of randomly selecting 1 woman with a height less than 66 inches is \( 0.8051 \). The probability of selecting a sample of 14 women with a mean height less than 66 …
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checkpoint altitude (feet above sea level) 1 - 127 2 - 29 3 1072 4 2697…
(a) $-127<1072$, Checkpoint 1 is lower than Checkpoint 3. (b) $-29 > - 179$, Checkpoint 2 is higher than Checkpoint 5.
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write the binomial probability and the normal probability for the shade…
A. \(P(5\leq x\leq7)=P(4.5\leq x\leq7.5)=0.3612\)
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write the binomial probability and the normal probability for the shade…
B. \(P(4\leq x\leq8)=P(4)+P(5)+P(6)+P(7)+P(8)=0.5875\)
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write the binomial probability and the normal probability for the shade…
The binomial probability \(P(5\leq x\leq7)\approx0.3634\) and the normal probability (with continuity correction) \(P(4.5 < X < 7.5)\approx0.3612\). The two probabilities are rela…
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the modeled shua takes a trip to an amusement park and rides a wheel. t…
The maximum is \(180\) (b) feet and it represents (b) the car's highest point.
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random sampling step 1: add all the numbers in the boxes. = step 2: fin…
Step 1: \(196\) Step 2: \(19.6\) Step 3: Si el área total es \(100\), el resultado es \(1960\)
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write the binomial probability and the normal probability for the shade…
C. \(P(5\leq x\leq7)=P(5)+P(6)+P(7)=0.3634\)
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find the probability that in 200 tosses of a fair six - sided die, a fi…
B. \(0.1210\)
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11. solve the equation 5.3g + 9 = 2.3g + 15. a. find the value of g. b.…
a. \(g = 2\) b. Substitute the value of \(g\) into the original equation. Calculate the left - hand side and the right - hand side. If they are equal, the value is correct. If not…
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the annual salary for one particular occupation is normally distributed…
The mean is \(\mu_{\bar{x}} = 122000\), and the standard deviation is \(\sigma_{\bar{x}}\approx4226\)
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what does it mean if an equation is equivalent to ( 0 = 0 )? explain th…
The equation has infinitely many solutions because the statement \(0 = 0\) is always true.
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ten percent of the population is left - handed. a class of 6,550 studen…
B. \(P(x\leq11.5)\)
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the body temperatures of adults are normally distributed with a mean of…
B. 0.9772
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the population mean and standard deviation are given below. find the re…
The probability is $0.7486$. Since the probability ($0.7486>0.05$), the sample mean is not unusual.
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the population mean and standard deviation are given below. find the re…
The probability is $0.7486$. The sample mean would not be considered unusual because it has a probability that is greater than $5\%$.
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write the binomial probability in words. then, use a continuity correct…
The probability of getting exactly 133 successes. The normal probability statement is \(P(132.5 < X<133.5)\)
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the average number of pounds of red meat a person consumes each year is…
D. 0.0985
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assume that the heights of women are normally distributed with a mean o…
B. 0.9811
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determine whether the statement is true or false. if it is false, rewri…
A. The statement is false. A sampling distribution of a sample mean is approximately normal if either \(n\geq30\) or the population is normal.
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what happens to the mean and standard deviation of the distribution of …
B. The mean of the sample means stays constant and the standard error increases.
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a population has a mean (mu = 87) and a standard deviation (sigma = 29)…
$\mu_{\bar{x}} = 87$ $\sigma_{\bar{x}}\approx1.892$
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in your readings you learned that \correlation does not imply causality…
Just because there is a relationship between two behaviors does not mean that one causes the other.
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use the central limit theorem to find the mean and standard error of th…
B. $\$1,100.00,\$29.21$
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what does it mean to have a psychology research question that is object…
That the phenomenon can be observed without introducing personal bias.
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lesson 20: writing and solving inequalities in one variable cool down: …
1. The mathematical representation is \(x\geqslant5\) (where \(x\) is the number of hours worked per week) and \(8.25x + 10\leqslant175\). 2. Lin can work \(5\leqslant x\leqslant2…
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use the correction for continuity and determine the normal probability …
B. \(P(x\leq108.5)\)
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assume that blood pressure readings are normally distributed with a mea…
B. 0.9938
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read the excerpt and choose the best answer from each drop - down menu.…
the narrator will pretend to enjoy Lisette's brownies.
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a drug tester claims that a drug cures a rare skin disease 67% of the t…
\(0.0351\)
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random sampling step 1: ————————— all the numbers in the boxes. = step …
Step 1: 50 Step 2: número total ; total ; 0.2 Step 3: 10
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gillian is writing a research paper about drones invading the publics p…
B. What legal protection do individuals have when someone's drone enters their property?
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random sampling area is a large forest. you want to count the populatio…
Total mice in 5 squares: $64$ Average number of mice in each square: $12.8$ Estimate of total population: $320$
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the graph of the annual snowfall distribution (in feet) for a particula…
\(\mu_{\bar{x}} = 4.3\), \(\sigma_{\bar{x}}=0.35\)
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the graph of the annual snowfall distribution (in feet) for a particula…
B.
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three out of seven students in the cafeteria line are chosen to answer …
35
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determine whether the graph shows a positive correlation, a negative co…
b. positive correlation; as time passes, the CPI increases.
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the scatter plot shows the study time and test scores for the students …
B. 94
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read the excerpt from part one of trifles. county attorney (with the ga…
It characterizes the County Attorney as someone desirous of showing respect to women, even if he does not mean it.
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read the excerpt from part one of trifles. mrs. hale (examining the ski…
looking very closely
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o, it came oer my ear like the sweet sound, that breathes upon a bank o…
The sounds are fading.
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select the word or phrase that is redundant and can be removed without …
Either "incinerate" or "burn" (as they are redundant with each other in this context).
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robert gathered data about the annual snowfall in relation to the eleva…
B.
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details no additional details were added for this assignment. listen wh…
deeply thoughtful
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complete the frequency table for the following set of data. you may opt…
| Interval | Frequency | |--|--| | \(0 - 4\) | \(2\) | | \(5 - 9\) | \(7\) | | \(10 - 14\) | \(6\) | | \(15 - 19\) | \(5\) |
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the table displays the scores of students on a recent exam. find the me…
\(79.2\)
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instructions the following sentence has a blank indicating that somethi…
fluctuate
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arrange the pieces below in two ways without changing the meaning or te…
Zucchini will be planted by me in Ravi Ross's vegetable garden.
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cars in a parking lot: how many suvs are in the parking lot? how many r…
Number of SUVs: \(25\) Number of red Hondas: \(8\) Number of red cars not SUVs: \(20\) Total number of cars: \(56\)
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in a recent year, the total scores for a certain standardized test were…
(a) \( 0.1451 \) (b) \( 0.4428 \) (c) \( 0.0394 \) (d) D. The event in part (c) is unusual because its probability is less than \( 0.05 \)
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bentley left his house and drove to the store. he stopped and went insi…
5
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which excerpt from \the love song of j. alfred prufrock\ indicates that…
No! I am not Prince Hamlet, nor was meant to be;
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mrs hale: (eyes fixed on a loaf of bread beside the bread - box, which …
focused
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read the excerpt from part one of trifles hale. well, she looked queer.…
strange
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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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a standardized exams scores are normally distributed. in a recent year,…
The z - score for 1880 is \(1.29\) The z - score for 1200 is \(-0.87\) The z - score for 2220 is \(2.36\) The z - score for 1360 is \(-0.36\) A. The unusual value(s) is/are \(2220…
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question a survey asked a random sample students if they estimated they…
\(65.7\%\)
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a survey was conducted at a local ballroom dance studio asking students…
For the first question: $32$ For the second question: $40$
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here is an example for you to analyze connotation. read this sentence. …
It suggests that Martina is not happy to see Luis. It explains more about how Martina feels. It shows how angry Martina is at Luis.
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the latina side of my identity was forged and closely nurtured by my fa…
They show the strong connection between the speaker and her family.
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if necessary, rearrange the pieces below so that the sentence is in the…
Sandy Cheeks hugged the llama.
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a random sample of students was surveyed and asked to list their grade …
The missing value (6th - grade students with pets) is \(28\)
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statistics notes 7.2 standard normal distributions robert scott example…
The amount of cheese \(6.9\) ounces is \(2.2\) standard deviations from the mean. The pizza parlor is not in danger of losing its franchise.
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the histogram below represents the number of television sets per househ…
15
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if a histogram is constructed from the following frequency distribution…
7
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the following data was collected from a survey in which people identifi…
9
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(a) during which year was the percentage the highest? approximately wha…
(a) Year: 2014, Percentage: 40% (b) Year: 2004, Percentage: 30%
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describe, in context, the joint frequency cell containing the value 4. …
Of those included in the sample, four are left handed and short.
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what is the marginal distribution for people who prefer sports cars? ge…
$30.9\%$
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what three points are identified on the graph? what is the unit rate? w…
- The three points are \((2,0.80)\), \((3,1.20)\), \((5,2.00)\) - The unit rate is \(0.40\) dollars per seashell. It means that for each seashell, the cost is \(0.40\) dollars.
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describe, in context, the joint frequency cell containing the value 19.…
Of those included in the sample, 19 are right handed and tall.
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a survey of statistics students asked the students for their eye color.…
Brown
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kevin asked some of his friends how many hours they had worked during t…
A. 3
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find the area to the left of $z = 1.18$.
\( 0.8810 \)
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below is a box plot of a board game stores board game price ranges. wha…
\(8\)
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find the interquartile range of the data set represented on the box plo…
$12$
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find the median of the data set using the box plot. show your work here…
\(6\)
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a school district performed a study to find the main causes leading to …
| Cause | Frequency | | ---- | ---- | | \(U\) | 9 | | \(I\) | 9 | | \(F\) | 7 | | \(O\) | 5 |
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lesson 12 | session 1 3 tameka pilots a hot air balloon. she lowers the…
The integer is \(-15\). It means the hot - air balloon's elevation decreases by 15 meters each time Tameka lowers it.
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9. lifeguard jon viponds job is hot. he is in the sun all day. jon vipo…
Surfing is awesome.
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find the range of the data set using the box plot.
\( 350 \)
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question 100 (1 point) state \yes means yes\ policies allow that a) peo…
C. saying "yes" to sexual activity does not constitute consent if the individual was intoxicated at the time.
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fill in the blanks below 6. the formula ( c = 20 + 15f ) represents the…
The slope of the graph means the cost per flyer is \(\$15\). The \(y -\)intercept of the graph represents a fixed additional fee of \(\$20\).
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a definition of a statistical question is given below. statistical ques…
(a) No (b) Yes (c) No (d) No (e) Yes
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the graph shows the relationship between the number of dvds purchased, …
The constant of proportionality is \(3.2\); It costs \(3.2\) dollars per \(1\) DVD(s). The point \((4,12.80)\) means that \(4\) DVDs cost \(12.80\) dollars.