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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are the ratios 6:2 and 9:3 equivalent? yes no
yes
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are the ratios 3:2 and 8:12 equivalent? yes no
no
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interpretive sociologists examine meanings attached to behaviors. they …
C. qualitative
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is it appropriate to use the normal distribution to approximate the sam…
For \( np \): \( 68 \) For \( nq \): \( 17 \) And the normal approximation is appropriate.
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let ( u ) be the universal set, where: ( u = {1,2,3,4,5,6,7,8,9,10,11,1…
s: - \( A' \cup B \): \( 1,2,4,5,6,7,8,10,11,12,13 \) - \( A \cap B \): \( 8,10,11 \) - \( C' \cup A \): \( 1,2,3,4,6,7,8,9,10,11 \) - \( (A \cap B)' \): \( 1,2,3,4,5,6,7,9,12,13 …
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are the ratios 16:2 and 8:1 equivalent? yes no
yes
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3. - / 1 points is it appropriate to use the normal distribution to app…
D. No, \( np \) is less than 5. ### Question 4
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if a research design has _________, it means the researcher feels confi…
A. generalizability
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are the ratios 6:4 and 18:12 equivalent? yes no
yes
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1.4 cardinality score: 0/100 answered: 1/15 question 1 0/6 pts 99 detai…
5
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2. - / 5 points assume that the population proportion is 0.53. compute …
For a sample size of 100: $\boldsymbol{0.0499}$ For a sample size of 200: $\boldsymbol{0.0353}$ For a sample size of 500: $\boldsymbol{0.0223}$ For a sample size of 1000: $\boldsy…
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are the ratios 1:2 and 11:14 equivalent? yes no
no
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graphing assignment #12 (3rd quarter, second graph) make a graph of the…
## Graph Requirements Summary: 1. Title: *Number of Super Bowl Viewers by Year* 2. X-axis (Independent): Labeled "Year", with evenly spaced years: 1967, 1972, 1977, 1982, 2009, 20…
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find the values for each of the following data sets: median: ______ mod…
Median: $12$ Mode: $13$ Range: $9$ Shape: skewed left
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in this lesson, you will learn useful words and expressions to use when…
1. g 2. i 3. a 4. j 5. e 6. b 7. f 8. h 9. c 10. d
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commas and coordinate adjectives writers often include coordinate adjec…
The content belongs to the subfield of Linguistics (under Arts) as it focuses on language grammar (comma usage with coordinate adjectives) and syntax.
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find the values for each of the following data sets: median: mode: rang…
Median: 8 Mode: 8 Range: 14 Shape: skewed right
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lena brought $7.36 to school. she then spent $6.27 to buy lunch. how mu…
$1.09
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instructions: solve each problem to put the puzzle together. ty george …
$\frac{1}{8}$
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ivan has 23 game cards. he wants to deal each of 3 players the same num…
Number of cards each player will get = 7 Number of cards remaining = 2
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raffael has 22 carnival ride tickets and it takes 6 tickets to ride the…
Number of times he can ride the coaster = 3 Number of tickets left over = 4
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identify whether each set of ordered pairs is a function or is not a fu…
Not a function
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scott has 19 one - dollar bills. he wants to give each of his 3 childre…
Number of bills he can give each child = \(6\) Number of bills remaining = \(1\)
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practice identify the dependent variable and the independent variable i…
1. Independent variable: speed ($s$), Dependent variable: distance traveled ($d$) 2. Independent variable: amount of the snack ($a$), Dependent variable: calories ($c$) 3. Indepen…
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Question was provided via image upload.
This situation **does** represents a function because each x-value corresponds to **exactly one** y-value.
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a girl makes a chart of her height, in inches, each year on her birthda…
Yes, this relation is a function. Each age (input value) is associated with exactly one height (output value), with no input having multiple distinct outputs.
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chapter 02 quiz: the research enterprise in psychology attempts left: 3…
1. Formulating hypotheses 2. infer cause and effect.
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a train is traveling at a steady rate of 48 miles per hour. which diagr…
The bottom-right diagram (Distance: 168 miles, Time: 3.5 hours)
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a biker began riding her mountain bike from the 0 - mile mark of a trai…
The bottom-left diagram (with 28$\frac{1}{2}$ miles over 3 hours) best represents the information.
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4 mph, \\(\\frac{5\\frac{1}{4} \\text{ miles}}{\\frac{3}{4} \\text{ hou…
| Name | $\frac{\text{distance}}{\text{time}}$ | Unit rate (speed) | |--------|----------------------------------------|-------------------| | Cyndy | $\frac{6 \text{ miles}}{1\fr…
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ruby is working two summer jobs, making $12 per hour washing cars and m…
13, 14, 15 hours
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instructions: solve each problem to put the puzzle toget bob has a box …
$\frac{5}{51}$
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instructions: solve each problem to put the puzzle together. type your …
$\frac{2}{15}$
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13. $1\\frac{1}{8}$ 14. $\\frac{1}{12}$ 15. $\\frac{7}{30}$ 16. $\\frac…
$\boldsymbol{>}$ ### Question 20:
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name period due date thursday, jan 29, 2020 every problem must have wor…
C ### Problem 2: Graph for Frozen Treats Sold
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2. the mean mark on a quiz was 7. the median mark was 6 and the mode wa…
a) A possible sorted set of marks: 1, 2, 3, 4, 5, 5, 5, 6, 6, 7, 8, 9, 10, 10, 10 b) - Mean: Increases from 7 to 7.8125, since the new mark (20) is higher than the original mean, …
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5. \\(\\frac{13}{100}\\)\ 6. \\(\\frac{4}{5}\\)\ 7. \\(\\frac{7}{10}\\)…
0.13 ### Problem 6: $\boldsymbol{\frac{4}{5}}$
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in exercises 19-22, write the number in scientific notation. 19. 22.2 ×…
19. $2.22 \times 10^{4}$ 20. $2.22 \times 10^{7}$ 21. $5.4 \times 10^{-5}$ 22. $5.4 \times 10^{-14}$
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16.1, 8.7, 6.4, 24.5, 4.2, 21.6; miles - kilometers table: miles 10, ki…
| Miles | Kilometers | |-------|------------| | 10 | 16.1 | | 4.2 | 6.7 | | 8.7 | 14 | | 15.2 | 24.5 |
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assignment do not go gentle you will now work through dylan thomass \do…
1. "Burn and rave" suggests a fierce, bright flame; people should resist death instead of fading quietly. 2. "Rage" means anger at death's injustice and passionate will to cling t…
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the height of a lamp is 100 centimeters. how tall is the lamp in inches…
39.37 in.
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at another sanctuary, the number of nesting turtles decreased by 10%. t…
260
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a bag of flour weighs 2.5 kilograms. about how much does the bag of flo…
5.5 lb
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a machine at a bakery is pouring out flour. the graph shows the amount …
(a) $5$ minutes (b) As time increases, the amount of flour in the machine decreases. At what rate is the amount of flour decreasing? $140$ grams per minute
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in exercises 13-18, write the number in scientific notation. 13. 72,000…
13. $7.2 \times 10^4$ 14. $7.2 \times 10^{12}$ 15. $7.2 \times 10^{-7}$ 16. $4.19 \times 10^7$ 17. $4.19 \times 10^{-3}$ 18. $4.19 \times 10^{-10}$
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1. - / 4 points a sample of size 110 is selected from a population with…
$0.50$ ### Part (b)
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mrs hale: id hate to have men coming into my kitchen, snooping around a…
1. "places in proper order" 2. organize 3. Arrange suggests a proper way to stack the pans and shows sympathy for Mrs. Wright.
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Question was provided via image upload.
13. 1320 14. 620 15. 6770 16. 9760 17. 211 18. 6390
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a town has a population of 13000 and grows at 5% every year. what will …
22234
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in exercises 7-12, write the number in decimal form. 7. $3.8 \\times 10…
7. $380000$ 8. $0.000038$ 9. $38000000$ 10. $62500$ 11. $0.00625$ 12. $0.0000000625$
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an airplane flies from san francisco to los angeles. the distance of th…
| Distance traveled in km, x | Number of people, y | |-----------------------------|----------------------| | 540 | 5 | | 540 | 25 | | 540 | 40 | | 540 | 60 |
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a college finds that 10% of students have taken a distance learning cla…
\( 0.42 \)
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4. odakota recorded the number of grades 7 and 8 students born in each …
a) Suitable graphs include: - Double/Grouped Bar Graph: Ideal for comparing the number of Grade 7 and Grade 8 students across each season with side-by-side bars. - Stacked Bar Gra…
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a town has a population of 12000 and grows at 5% every year. what will …
21550
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a bus ticket costs $2.50 to ride, regardless of how far you travel. thi…
y = 2.50
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question a town has a population of 10000 and grows at 2.5% every year.…
11887
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3. rob researched accident statistics in his community. he learned that…
Rob's inference is **not valid**. He only compares total injury numbers, not the rate of injuries relative to how many people use each vehicle type. Since far more people drive ca…
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a new car is purchased for 22400 dollars. the value of the car deprecia…
12680.64 dollars
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in exercises 3-6, find the value of n. 3. 94,000,000 = 9.4 × 10ⁿ 4. 555…
3. $n=7$ 4. $n=11$ 5. $n=-5$ 6. $n=-11$
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the vertical change for this graph is the change in cost. what do we kn…
The cost, or the y-coordinate, is always $2.50.
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24. - / 5 points a college finds that 10% of students have taken a dist…
\( 0.08 \)
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1. - / 5 points assume that the population standard deviation is $\\sig…
(for part a): - Sample size $n = 50$: $\boxed{7.778}$ - Sample size $n = 100$: $\boxed{5.500}$ - Sample size $n = 150$: $\boxed{4.491}$ - Sample size $n = 200$: $\boxed{3.889}$ ##…
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23. - / 3 points g and h are mutually exclusive events. - $p(g) = 0.5$ …
\( 0.8 \)
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a, b, c, d four options, each with a table of q and r values. a: q=5, r…
A
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which situation best describes the relationship between all the values …
A. Rachel had six dollars and then started to save one dollar each week.
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question 5 the word diaspora means a. \a scattering over a wide area.\ …
A. "a scattering over a wide area."
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15) the table below shows preference between beef and chicken and apple…
### Problem 15a: Complete the table We have a contingency table for preferences between beef/chicken and apples/oranges. Let's define the rows as Apples, Oranges, and the columns …
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4. 1 / 1 points a random sample is selected from a population with mean…
\(n = 41\), \(n = 60\), \(n = 120\), \(n = 480\) (the options with these \(n\) values should be selected) ### Question 5 (a)
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question 7 m8 mod 5 dynamic review at a candy factory, a machine is put…
(a) 60 pounds (b) Correct statement: As time increases, the amount of candy in the container increases. Rate of increase: 40 pounds per minute
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an experiment consists of tossing a nickel, a dime, and a quarter. of i…
\(\frac{1}{2}\)
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22. -/ 3 points an experiment consists of tossing a nickel, a dime, and…
HHH, HHT, HTH, HTT, THH, THT, TTH, TTT
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an experiment consists of first rolling a die and then tossing a coin. …
B. \(\{(1, H), (1, T), (2, H), (2, T), (3, H), (3, T), (4, H), (4, T), (5, H), (5, T), (6, H), (6, T)\}\) ### Part (b)
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20. 7 / 8 points a special deck of cards has ten cards. four are green …
\(\frac{3}{10}\)
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28. 250% of 25 = 29. 106% of $50 = 30. 75.2% of 130 = 31. 0.5% of 60 = …
28. $62.5$ 29. $\$54$ 30. $97.76$ 31. $0.3$ 32. $0.48$ 33. $2.25$ 34. $19.5054$ million households 35. $\$19.95$
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a special deck of cards has ten cards. four are green (g), two are blue…
A and C \(\boldsymbol{\text{are}}\) mutually exclusive because they \(\boldsymbol{\text{cannot}}\) happen at the same time. Thus, \( P(A \text{ and } C) = \boldsymbol{\frac{0}{20}…
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a special deck of cards has ten cards. four are green (g), two are blue…
\( 0 \)
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a special deck of cards has ten cards. four are green (g), two are blue…
A and B are not mutually exclusive because they can happen at the same time. Thus, \(P(A \text{ and } B) = \frac{2}{5}\) (or \(\frac{8}{20}\) simplified to \(\frac{2}{5}\)).
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name ______________________________ date __________ period ______ lesso…
1. 2 2. 12 3. 18 4. 5 5. 150 6. 3.3 7. 110 8. 0.1 9. 42 10. 0.4 11. 108.54 12. 47.3 13. 319.64 14. 3.5 15. 11.7 16. 56.5 17. 115 18. 6.4 19. 64.8 20. 17.28 21. 11.25
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a special deck of cards has ten cards. four are green (g), two are blue…
\(\frac{1}{10}\)
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a special deck of cards has ten cards. four are green (g), two are blue…
{GH, GT, BH, BT, RH, RT}
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reasoning joanne cannot decide which of two washing machines to buy. th…
The sale price of the first washing machine is $\$347$ (rounded to nearest dollar). The sale price of the second washing machine is $\$356$ (rounded to nearest dollar). Joanne sho…
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6. (a) what number is 140 percent of 70? work the problem and then draw…
98 ### Diagram Description: ``` 100% (70) 40% (28) |-------------------|---------| <-----------------------------> 140% (98) ``` The entire bar represents 140% of 70, split into t…
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part (d) in words, explain what ( p(a mid b) ) represents. - ( p(a mid …
\(\frac{1}{7}\)
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question 19 (1 point) according to to scene 1, what warning does stella…
b. Stanley and his friends are not the types of people Blanche is accustomed to
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9 gregory buys a 5-oz packet of oregano. how much oregano will he have …
To solve these problems, we need the recipe for taco seasoning (amount of each ingredient, especially oregano and chili powder) which is missing. Please provide the taco seasoning…
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assessment practice answer these questions before moving on to the anal…
C. to show how eavesdropping provides an animal with prey ### Question 2 - Part A
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1. the defense budget was spent on halberds and other armor in the rati…
8000 farthings
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3. a scientist measured the weights of squirrels in two populations. th…
C. The data for the two populations have different skews. ### Question 4
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successive differences practice complete this assessment to review what…
The 2nd differences are a constant value of 2.
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4 the table below shows the length of several roads. what is the combin…
22 miles
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respuesta usando fracciones de referencia. fracciones dadas a continuac…
\( 5\frac{1}{3}<5\frac{3}{4} \)
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in the following passage, the narrator, nick carraway, is recounting hi…
"In consequence, I'm inclined to reserve all judgments, a habit that has opened up many curious natures to me and also made me the victim of not a few veteran bores."
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sasha is swimming laps at the community pool. she starts in her lane at…
The first graph (top - left)
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roy is riding the merry - go - round at the carnival while his mom wait…
The graph in the second (top - right) box, which shows a periodic pattern of distance increasing to a peak, decreasing to a trough, and repeating as time increases.
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solve. 1. a female rabbit gave birth to 6 babies. each baby weighed 4 o…
1. 24 ounces 2. The 128-ounce watermelon is heavier, by 16 ounces. 3. It weighs more than 1 pound, by 5 ounces. 4. 6 pints 5. 384 fluid ounces 6. 7 pints
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at first, her plan was to make him homemade magnets using cut - outs fr…
The most meaningful gifts don't have to cost a lot.
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marcy and her friends are playing hide - and - seek at recess. everyone…
The third graph (bottom - left one with a positive slope, then horizontal, then negative slope, starting from (0,0))
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pours down the drain. he sets the empty pot on the coffeemaker, adds gr…
The first graph (the top - left graph with the x - axis labeled "Time (min.)" and y - axis labeled "Volume (c)")
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which time interval has a greater rate of change? 2) which states popul…
1. Temperature rate of change: $\frac{-17}{6} \approx -2.83 \, ^\circ\text{F/hour}$ (the only interval provided, so it is the measured rate) 2. California's population grew more q…
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on saturday morning, mia biked to her friends house. she stayed there f…
The first graph (top - left) which has a line starting at the origin, increasing to a constant value, then decreasing back to the x - axis.