Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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there were 88 people riding a subway car. then 29 riders got off the ca…
\( 59 \)
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bree had 48 marbles. she gave 15 marbles to her sister. how many marble…
33
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there were 62 sweaters in a store. in one day, the store sold 37 sweate…
25
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andre has some tiles with numbers on them, as shown. he puts them in a …
D. greater than $\frac{1}{2}$ and less than 1
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david has a collection of 9 gray fingerboards, 4 white fingerboards, an…
B
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there are 16 junior high students in the brewster town swimming club. a…
Greatest possible number of 9th graders: 3 Least possible number of 9th graders: 1
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in greek, the word for poetry meant... to eat to swim to create
C. to create (assuming the options are labeled A, B, C as "To eat", "to swim", "to create" respectively)
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there are 40 junior high students in the environmental club. a student …
19
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a box contains 24 fruit bars. - the probability of choosing a cherry, a…
6
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a box contains 24 fruit bars. the probability of choosing a cherry, app…
5 strawberry bars
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an object is placed at 0 on a number line. it moves 3 units to the righ…
5
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based on the table below, x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 f(x…
$f(7)=28$ $x=2$
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nombre: gramática b2 10 el problema de pablo completa las siguientes or…
### Part 1: "El problema de Pablo" (Filling with appropriate verbs) #### 1. Pablo ______ a la oficina de la doctora. (va / se va) - Explanation: "va" means "goes (to a place)"; "s…
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question 38 of 50 write \\(\\frac{79}{16}\\) as a decimal. question 39 …
4.9375 ### Question 39
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question 34 of 50 a light bulb in alans house uses a total of 6.58 watt…
\boxed{1.43} (approximate, depending on the correct problem statement) ### Question 35
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question 22 of 50 for the last 6 days, diane worked 4.9 hours each day.…
29.4
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question 16 of 50 add. 1.72 + 7.39 + 6.6 question 17 of 50 subtract. \\…
15.71 ### Question 17
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q # 9. complete the equation of the line that best fits the data. y = x
The equation of the line is $y = -\frac{9}{10}x + 19$
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question 10 of 50 write 0.866 as a fraction. do not try to simplify you…
\(\frac{866}{1000}\) ### Question 11
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question 5 of 50 write the following number in standard decimal form. n…
\(0.0917\) ### Question 6
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country comparison | country | gender inequality index | gdp per capita…
A. There are a large number of women in the Spanish legislature, but few women have been elected in Kuwait.
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the function $f(x) = 68(1.3)^x$ represents the possible squirrel popula…
A. 1.3 times
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scientists released 8 rabbits into a new habitat in year 0. each year, …
A. $f(x) = 8(2)^x$
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the function $f(x) = 40(1.2)^x$ represents the fox population of a fore…
B. 40
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which graph represents the amounts of time martha can spend practicing …
B (the graph labeled B with the blue - shaded region below the line \( x + y = 50 \) and in the first quadrant)
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a basket holds at most 15 pounds of apples and oranges. there are no mo…
B. (2, 12)
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afternoon of the luddites \why dont you send your grandpa a postcard? m…
D. Corner finds it hard to find anything fun to do when his parents decide to reduce the family’s screen time, so he begins kicking around a soccer ball. His parents are happy whe…
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the table shows the price of a service over time. year | 1960 | 1970 | …
$\hat{y} = 20.9(1.059)^x$
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adapted from cupid and psyche by josephine preston peabody passage 1 a …
A. Psyche's sisters are awful, as they are obviously jealous of Psyche's situation of living a wonderful life with a loving husband. Full of green - eyed envy, the sisters convinc…
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a caterpillar crawls across the sidewalk at a constant speed of 2 centi…
1. Plot the points $(5, 10)$ and $(15, 30)$ on the provided grid (with the horizontal axis as Time in seconds, vertical axis as Distance in centimeters). 2. Draw a straight line p…
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apollo and the shepherd: a greek myth by apollonius rhodius (excerpt) a…
D. The simple things in life can bring great pleasure.
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jean invested $380 in stocks. over the next 5 years, the value of her i…
The value of her stock 10 years after her initial purchase is \(\boxed{562}\)
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a box containing 1,000 coins is shaken, and the coins are emptied onto …
The exponential regression equation is \( y = 1000.0000(0.6099)^x \), and the number of coins returned after the eighth trial is approximately \(\boxed{19}\) (the value may vary s…
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which expressions also have a value of 70? move each card to the correc…
- Value of 70: \(46 + 4 + 10 + 10\), \(46 + 4 + 20\) - Not a Value of 70: \(46 + 4 + 10\)
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the scale shown can be balanced when both sides have the same number of…
25 grams
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six girls and four boys have entered the science fair. first, second, a…
10%
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at a high school, students can choose between three art electives, four…
$\boldsymbol{\frac{(_{3}C_1)(_{4}C_1)}{_{12}C_2}}$ (the third option)
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the track team gives awards for first, second, and third place runners.…
\(\boldsymbol{\frac{_{12}P_3}{_{22}P_3}}\) (the first option)
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six sophomores and 14 freshmen are competing for two alternate position…
\(\frac{{}_6C_2}{{}_{20}C_2}\) (the 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 landscaper is selecting two trees to plant. he has five to choose fro…
60%
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probabilities with passwords a website randomly creates an initial pass…
s: - Probability of no vowels: \(\approx0.28\) - Probability first letter is \(m\): \(\approx0.038\) (or \(\frac{1}{26}\))
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a bag contains eight yellow marbles, nine green marbles, three purple m…
0.971
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analyzing scenarios to calculate probabilities a bicycle lock has a fou…
s: - Probability the code begins with 5: \(\frac{1}{10}\) - Probability the code does not contain 0: \(\frac{3}{5}\)
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read the quotation from \song of myself.\ i depart as air, i shake my w…
They create a sense of movement.
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a deck of playing cards has four suits, with thirteen cards in each sui…
- The total possible outcomes can be found using \(_{52}C_5\). - The probability of choosing five clubs is roughly 0.0005.
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read the quotation from \song of myself.\ you will hardly know who i am…
He wants to communicate directly with readers.
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a bag contains eight yellow marbles, nine green marbles, three purple m…
\( P(Y \text{ and } R) = \frac{(_8C_1)(_5C_1)}{_{25}C_2} \) (the second option)
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select the correct answer from each drop-down menu. blocks numbered 0 t…
The probability of picking an odd prime number is \(\frac{3}{10}\). The probability of picking a number greater than 0 that is also a perfect square is \(\frac{3}{10}\).
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select the correct answer. two 6 - sided dice are rolled at the same ti…
C. 4
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there are 4 red balls, 6 white balls, and 3 green balls in a bag. if on…
A. \( \frac{7}{13} \)
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kareem inserted 2 quarters into a dryer at a laundromat, and the dryer …
48 minutes (corresponding to the option "48 minutes")
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select the correct answer. a fair coin is tossed 3 times in a row. what…
A. \(\frac{1}{8}\)
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alejandra can husk 8 ears of corn in 24 minutes. at this rate, how many…
11
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answer the question below. type your response in the space provided. if…
32
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a baseball player had 4 hits in 8 games. at this rate, how many hits wi…
14 (corresponding to the option "14")
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sample student response: mickey set up the equivalent rate wrong. the c…
- Mickey set up the rate incorrectly. - He needs to find the unit price per carton of eggs. - He should switch the numerator and the denominator to find the correct unit price.
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select the correct answer. what is the relationship between the two var…
E. positive linear association with one deviation
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a movie producer conducted a survey after the screening of his movie to…
D. The majority of the audience in the 16 - 25 age group liked the movie.
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based on the essays central ideas, what is emerson trying to convince t…
- go out into nature and commune with the divine - experience real solitude to truly perceive nature - realize that individuals are meant to learn from nature and transcend it - t…
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mickey used these calculations to find how much he would spend on 7 car…
Mickey's error was in calculating the unit price. He should divide the total cost (\$22.20) by the number of cartons (12) to find the unit price, but instead he incorrectly divide…
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ivan can paint 25 square feet every half hour. how many square feet can…
150 square feet (the option with "150 square feet")
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anusha is walking on a hiking trail at a rate of \\(\\frac{3}{4}\\) mil…
3
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which vehicle gets the best mileage per gallon? vehicle miles traveled …
Minivan
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practice using unit rates in real - world situations. find the unit rat…
Sedan: 18 miles per gallon Minivan: 19 miles per gallon Truck: 16 miles per gallon
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question 5 if john, travelling at a constant speed on a stretch of high…
150 miles ### Question 6 (assuming the missing part is "and notices that three have tags on them. About how many rabbits are in the forest?")
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if 9 out of 10 doctors in a small city recommend afternoon naps, and th…
72
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question 3 a recipe for 4 ounces of frosting calls for 2 teaspoons of s…
You would need 6 teaspoons of sugar to make 12 ounces of frosting.
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respond to the following based on your reading. find the number that co…
s: a. \(c = 60\) b. \(n = 0.35\) c. \(x = 12\) d. \(k = 140\)
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a certain color paint should have a mix of blue and green in a ratio of…
20
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for every 15 columns of news stories in a newspaper, 4 columns of ads a…
80
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question 2 a recipe calls for 5 cups of flour for every 3 teaspoons of …
9 teaspoons
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check your learning: proportions and cross multiplication question 1 re…
s: a. \( \boldsymbol{48} \) b. \( \boldsymbol{15} \) c. \( \boldsymbol{33} \) d. \( \boldsymbol{15} \)
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michael ran 3 miles in 24 minutes. what is his average running speed in…
7.5 miles per hour (corresponding to the option: 7.5 miles per hour)
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if 2.5 pounds of strawberries cost $10, how much do 8 pounds of strawbe…
$32.00$ ### Second Question (Sugar for Cookies)
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if 2.5 pounds of strawberries cost $10, how much do 8 pounds of strawbe…
\$32.00 ### Second Question (Sugar for Cookies)
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jose ran \\(\\frac{1}{3}\\) mile in 3 minutes and 15 seconds. calculate…
$9\frac{3}{4}$ minutes per mile (the option with text "9$\frac{3}{4}$ minutes per mile")
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alan mows lawns in the summer to make money. he knows that, on average,…
\(\frac{2}{5}\) lawns per hour (corresponding to the option: \(\frac{2}{5}\) lawns per hour)
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belleville high school offers classes on three different foreign langua…
A and B are independent events because \( P(A|B)=P(A)\)
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. $\frac{9}{10} + \frac{7}{8} + 2\frac{3}{4}$
\(4\frac{21}{40}\) (or \(\frac{181}{40}\))
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information about how the students at vista view high school got to sch…
114
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a burrito restaurant recorded 200 customer orders. each order was categ…
The events "order type" (takeout or dine - in) and "day of the week" (weekday or weekend) are not independent. (The option: The events "order type" (takeout or dine - in) and "day…
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a survey was taken of children between the ages of 10 and 17 about how …
The correct statement is "Out of the 97 children who have 1 sibling, 40 of them do not have a pet." (The last option, as per the image’s options.)
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a survey was taken of children between the ages of 7 and 12. let a be t…
A and B are not independent events because \( P(A|B) = 0.375 \) and \( P(A) = 0.25 \) (corresponding to the last option: "A and B are not independent events because \( P(A|B) = 0.…
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the two - way table shows the medal count for the top - performing coun…
The probability that a randomly selected silver medal was awarded to Great Britain is \(\frac{17}{99}\) (the first option among the given options about silver medal and Great Brit…
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the two - way table shows the ages of the players on different soccer t…
To solve this, we analyze each statement by calculating the relevant probabilities using the two - way table. ### Statement 1: The probability that a randomly selected player on T…
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which statement is true about whether c and y are independent events? c…
C and Y are not independent events because \( P(C|Y) eq P(C) \) (the last option: "C and Y are not independent events because \( P(C | Y) eq P(C) \)").
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information about a shipment of mirrors to a local store is shown. char…
68
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which statement is true? the probability that a randomly selected adult…
The probability that a randomly selected person who chose Mexico as the preferred destination is a child is $\frac{14}{117}$? Wait, no—wait, the option says $\frac{14}{113}$. Wait…
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find p(y|b) from the information in the table. to the nearest tenth, wh…
0.4
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describing conditional probabilities explain why p(a|d) and p(d|a) from…
\( P(A|D) = \frac{2}{10} = \frac{1}{5} \) and \( P(D|A) = \frac{2}{8} = \frac{1}{4} \). They differ because \( P(A|D) \) conditions on \( D \) (denominator 10) and \( P(D|A) \) co…
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isabella created a new phone app and uploaded it to an app store. she f…
2 downloads/minute (Option: 2 downloads/minute) ### Second Question (Rabbit's Travel Rate)
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brown law firm collected data on the transportation choices of its empl…
# Explanation: To determine independent events, we use the formula for independent events: \( P(A \cap B) = P(A) \times P(B) \). First, we calculate the probabilities for each eve…
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the two - way table shows the distribution of gender to favorite film g…
The statement "Event F for female and event D for drama are independent events" is true.
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the two - way table shows the distribution of book style to genre. migu…
Yes, the two events are independent because \( P(\text{NF}|\text{PB}) = P(\text{NF}) \). (Corresponding option: "Yes, the two events are independent because \( P(\text{NF}|\text{P…
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a class of 24 students went on a picnic. they had a choice between havi…
D. 3 : 1 ### Second Question (Unit Rate for Fatima's Running)
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which of the following is the method used to determine whether or not a…
A. Cross multiplication ### Second Question (Ratio of Max's to Angela's running time):
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which of the following is a mathematical statement showing that one rat…
C. Proportion ### Second Question (Since a proportion involves two ratios, every proportion must have four terms. The first and fourth terms are called which of the following?)
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the two - way table shows the results of a recent study on the effectiv…
\( P(N|V) \approx 0.55 \) \( P(N) \approx 0.59 \) Are events \( N \) and \( V \) independent? No
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which of the following terms correctly describes 4 : 1? ratio percent f…
Ratio ### Question 2