Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
-
7. on a field trip, there are 3 chaperones for every 20 students. there…
a. 12 b. 80
-
5. complete each statement. a. 20% of 60 is ______ b. 25% of ______ is …
a. 12 b. 24 c. 14 d. 45 e. 70 f. 21
-
4. order from greatest to least: - 55% of 180 - 300% of 26 - 12% of 700
55% of 180, 12% of 700, 300% of 26
-
1. a. to find 40% of 75, priya calculates \\(\\frac{2}{5} \\cdot 75\\).…
a. Yes, her calculation gives the correct value. 40% is equivalent to $\frac{2}{5}$, so $\frac{2}{5} \times 75 = 30$, which is the same as $0.4 \times 75 = 30$. b. Yes, $\frac{2}{…
-
round to the nearest 1,000. 1,307
1000
-
graph. x < 0 to draw a ray, plot an endpoint and select an arrow. selec…
To graph \( x < 0 \): 1. Place an open circle at \( x = 0 \) on the number line (since 0 is not included in the solution). 2. Draw a ray starting from the open circle at 0 and ext…
-
question: 18 or 30 which of the following is the fractional representat…
Assuming the first option is \(\frac{3}{8}\) (e.g., A. 3/8), the answer is A. 3/8 (or the option corresponding to \(\frac{3}{8}\)).
-
5. an ant travels at a constant rate of 30 cm every 2 minutes. a. at wh…
a. $\frac{1}{15}$ minutes per centimeter b. 15 centimeters per minute
-
4. select all the expressions whose value is larger than 100. a. 120% o…
A. 120% of 100 D. 20% of 800 F. 500% of 400
-
pacific northwest native american groups utilized an abundance of resou…
B. salmon
-
significant figures practice worksheet how many significant figures do …
4 significant figures, precise to the nearest liter. ### 2) 3010 grams
-
the domain of the function defined by the set of points below. express …
\(\{-9, -8, -7, -4, 3, 5, 9\}\)
-
find the domain of the function defined by the set of points below. exp…
The domain is \(\{-5, -3, 0, 7\}\)
-
question find the domain of the function defined by the set of points b…
\(\{-5, - 3,0,7\}\)
-
find the range of the function defined by the set of points below. expr…
\(\{-3, -2, 2, 6\}\)
-
part 3: the power of compounding use the compound interest calculator (…
4. One way: Increase his monthly contribution. A higher monthly deposit means a larger principal base for compound interest, which will grow to a much larger total over 40 years. …
-
estimate the percent of the number 17. 52% of 83 18. 24% of 45
Approximately 43 (or 40, depending on rounding method; the precise value is 43.16) ### Problem 18: Estimate 24% of 45
-
massachusetts 47.7 virginia 44.3 michigan 32.8 washington 38.4 minnesot…
6, 55–59.99: 3, 60–64.99: 3. So for part (a), the correct frequency for 10–14.99 is 5? Wait, no, the sum is 50, so let's recheck: 0 (0–4.99) + 1 (5–9.99) + 5 (10–14.99) + 4 (15–19…
-
examples 2 and 3 3. awards the student of the month gets to choose one …
\(\frac{1}{2}\)
-
examples 2 and 3 3. awards the student of the month gets to choose one …
\(\frac{1}{2}\)
-
which of the following best describes a \false cognate?\ words between …
A. Words between languages that look and sound similar, but have different meanings.
-
2. sales a street vendor is selling t - shirts outside of a concert are…
To determine the number of T - shirts that are blue or large, we use the principle of inclusion - exclusion for sets. The formula for \(n(A\cup B)=n(A)+n(B)-n(A\cap B)\), where \(…
-
2. ellie is going to see a movie and is taking her 4 kids. each movie t…
For 7 snacks, total cost is \(\$101.5\). For \(x\) snacks, total cost is \(70 + 4.50x\) dollars.
-
example 1 determine whether the events are mutually exclusive or not mu…
The events are not mutually exclusive. Because rolling a 6 (event 1) and rolling an even number (event 2) can happen simultaneously (as 6 is an even number), so they are not mutua…
-
example 1 determine whether the events are mutually exclusive or not mu…
The events (rolling a 6 or rolling an even number) are not mutually exclusive because a roll of 6 is both a 6 and an even number, meaning the events can occur simultaneously.
-
1. kylies math teacher finds that theres roughly a linear relationship …
B. The number of hours a student should spend on their homework to expect a score of 91 on the quiz.
-
each day, salma records the number of news articles she reads. the dot …
(a) Range: 8 (b) Mode: 2
-
eleven adults were asked how many different jobs they have had. their a…
(a) Range: \( 7 \) (b) Mode: \( 6 \)
-
express the following fraction as a decimal and as a percentage.\\(\\fr…
Decimal: $0.125$, Percentage: $12.5\%$
-
point e is located at $2.6 \\times 10^{-6}$. plot point e on the number…
To plot Point E at \(2.6\times10^{-6}\), we first recognize that \(2.6\times10^{-6}\) is \(2.6\) micro - units (where each micro - unit is \(10^{-6}\)) from \(0\). On the number l…
-
single step word problems using addition subtraction within 1000 1. sar…
377 For question 2:
-
does ellen spend more time on homework or sports? (pie chart with secti…
sports (the segment for sports is larger than the segment for homework in the pie chart)
-
name _______________________________ dat 1. the value of y varies direc…
50
-
2 lee cada problema y realiza la división que lo resuelve. a) abiel tie…
# Explicación: --- ### Ejercicio 2 ## a) Paso 1: Dividir total entre porción $\frac{12.30}{0.75} = 16.4$ ## a) Paso 2: Tomar valor entero (paquetes completos) Se descarta la parte…
-
one table below shows some values of the domain and range for the funct…
(a) (i) $5$ (a) (ii) $3$ (b) $3$
-
2 lee cada problema y realiza la división que lo resuelve. a) alvin tie…
# Explicación: --- ### Problemas de reparto (punto 2) ## a) ## Paso 1: Dividir total entre porción $\frac{12.50}{0.75} \approx 16.67$ ## Paso 2: Tomar valor entero inferior Se tom…
-
(b) a relative frequency distribution. average precipitation (inches) r…
To solve this, we need the frequency (number of observations) in each class interval. Since the frequencies are missing, we'll assume we have a dataset with total number of observ…
-
kansas 28.9 south dakota 20.1 kentucky 48.9 tennessee 54.2 louisiana 60…
The frequency distribution table is as follows: | Average Precipitation (inches) | Frequency | | --- | --- | | 0 - 4.99 | 0 | | 5 - 9.99 | 0 | | 10 - 14.99 | 2 | | 15 - 19.99 | 0 …
-
use the graph of g to find g(6). g(6) = \\square
$3$
-
13. 17% of 40
\( 6.8 \)
-
quiz for lessons 5-1 through 5-6 5-1 ratios 1. a concession stand sold …
The ratio of strawberry to orange drinks is greater. ### Question 2:
-
unit: scatter plots and homework 4 trend line equations apply your know…
1. $y=1.5x+60$ 2. 105 3. Approximately 26.67 minutes 4. False, correct equation: $y=-12x+100$ 5. False, about 40% of the project remains 6. False, likely spent about 7.5 days 7. 6…
-
instructions read the question carefully and select the best answer. wh…
C. noun | people living outside their native country
-
solve each problem. 1 jenna borrows $8,000 for college at a yearly simp…
Interest: \(\$7,200\); Total Amount: \(\$15,200\) ### Problem 2: Mike's Savings
-
14. maria and daniel are running for 8th grade class president. four st…
B. 81 to 117 votes
-
which of these statements is most strongly supported by the following p…
A. Former artistic traditions were not sufficient mediums through which to capture the horrors of the modern world.
-
13. last year, jordan had 80 video games in his collection. now, he has…
Choice 1: B. Increased Choice 2: C. 25%
-
8. thursday afternoon between 4:00 and 5:00 you spend $\frac{1}{4}$ of …
\(\frac{1}{4}\), \(35\%\), \(0.4\)
-
a doctors office staff studied the waiting times for patients who arriv…
(a) | Waiting Time | Frequency | Relative Frequency | |--------------|-----------|--------------------| | 0–4 | 2 | 0.1 | | 5–9 | 10 | 0.5 | | 10–14 | 5 | 0.25 | | 15–19 | 2 | 0.1…
-
write the fraction or mixed number as a percent. 4. ( 1\frac{11}{20} )
\(155\%\)
-
question 4 points 2 choose the option where comma is used correctly. so…
Sometimes, Jack, can come off as a bit insensitive, but I know he means well.
-
at the school carnival, students played a game where they had to guess …
1. This word has a meaning similar to guessed or predicted. → estimated 2. This word has a prefix and means "incorrectly guessed too much." → overestimated 3. This word has a pref…
-
*12. sports harriets current score after two rounds in a freestyle skat…
\( 45.7 + x \geq 83.2 \) (where \( x \) is the score Harriet achieves in the remaining rounds) or \( x \geq 83.2 \) (where \( x \) is Harriet's total score). However, the more acc…
-
chapter 4 test a 6.1.7 i can convert between equivalent representations…
\(\frac{3}{20}\) ### Problem 2: 240% as a mixed number
-
the table shows the test scores of students who studied for a test as a…
The correct option is: "Both distributions are nearly symmetric, so the mean and the standard deviation are the best measures for comparison."
-
multiple-choice question whats the meaning of this personification? \th…
D. Photos of me are always really good. (assuming the options are labeled A - D in order as: A. I own an expensive camera., B. I like to visit art museums., C. Photography is one …
-
who can ride? luis is allowed to ride the kiddie swings. omar is 6 inch…
Yes
-
section of text balthasar. as i did sleep under this yew tree here, i d…
1. Balthasar's dream is a direct foreshadowing: It shows his master Romeo killing another man, which exactly foreshadows Romeo fighting and killing Paris at Juliet's tomb. 2. What…
-
aring data sets the box plots show the data distributions for the numbe…
The difference between the medians of both data sets is 2. (So the first option is correct)
-
number of coupon users per hour day 1 day 2 0 1 2 3 4 5 6 7 8 9 10 11 1…
interquartile range
-
shows the distributions of prices for packs of adult of kid socks at a …
median
-
practice makes perfect 63.1 pham is conducting a survey for the school …
a. Pham first calculated the total number of students with either device ($175-110=65$). Then he found the sum of students with iPhones and iPads ($28+44=72$), and subtracted the …
-
for the first time in his life, nicolás was at the beach! he stared in …
1. Nicolás feels like he is having a wonderful day at the beach. 2. Meanwhile, Santi thinks about how he has visited the beach often. 3. Now he wishes he could go to the ocean
-
practice makes perfect 63.1 pham is conducting a survey for the school …
a. Pham first calculated total students with at least one device ($175-110=65$). Then he subtracted the students with only an iPhone (21) and only an iPad (37) from this total: $6…
-
your ride you are in charge of determining the height restriction for y…
A number line with a closed blue dot placed directly at 60 (matching the provided number line range from 54 to 66), with no shaded regions or arrows extending left/right, as only …
-
jack flips a coin and rolls a number cube labeled 1 through 6. what is …
0.083
-
expected outcomes to the actual outcomes of standard number cubes. whic…
- The standard deviation of the actual sums is less than that of the expected sums. - The range of the sums is the same for both sets of data. - Both data sets are symmetrical.
-
which table represents a linear function? a | x | y | |----|----| | 3 |…
# Explanation: To determine which table represents a linear function, we check if the rate of change (slope) between consecutive points is constant. The slope formula is $m = \fra…
-
round to the nearest hundredth. 5 4.157 6 349.332 7 21.034 8 6.976 roun…
\(4.16\) ### Question 6: Round 349.332 to the nearest hundredth
-
morning customers who visited ne - month period. what is the best measu…
s: 1. Best measure of center: Median 2. Best measure of variation: Interquartile range (IQR) 3. Reason: Skewed (or have outliers, so we use resistant measures) (Note: The exact op…
-
4. the number $5 \\times 10^8$ is how many times as much as $1 \\times …
\(500\)
-
which set of ordered pairs (x, y) could represent a linear function? a …
C
-
kiddie swings you must be 48 inches or shorter to ride the kiddie swing…
To graph \( h \leq 48 \) on the number line: 1. Find the position of 48 (between 46 and 50 on the given number line). 2. Place a **closed circle** at 48 (because 48 is included, a…
-
5. where should the dash be placed? this does not mean that basketball …
A. This does not mean that basketball is a game only for giants—thank goodness!
-
which expression means the same as \the quotient of 8 less than x and 4…
E. $(x - 8) \div 4$
-
ws the yearly earnings, in thousands of dollars, over a for college gra…
The distribution of earnings for wage earners is more symmetric than the distribution of earnings for the self - employed.
-
e shows the monthly data usage in gigabytes for two cell on a family pl…
s: - Range of primary phone: \( \boldsymbol{0.28} \) - Range of secondary phone: \( \boldsymbol{0.73} \) - Median difference: \( \boldsymbol{0.48} \)
-
3. which shows the number 6,350 in scientific notation? a 6×10³ b 6.35×…
C. \( 6.35 \times 10^3 \)
-
b. complete the table to show the number of pages noah reads in the fir…
b. The completed table is as shown above (all values are correctly filled). c. 20 d. $p = 20d$
-
the histogram shows the number of morning customers who visited north c…
The north restaurant can expect about 55 morning visitors.
-
the box plots show the distributions of daily temperatures, in °f, for …
(Assuming the two correct answers are "Both distributions are skewed right" and another correct statement like "The median temperature in Longview is higher than in Cedar Rapids" …
-
4 complete the table to show the number of pages noah reads in the firs…
| Number of Days, $d$ | Calculation | Number of Pages, $p$ | |----------------------|-------------|-----------------------| | 1 | $1 \times 20$ | 20 | | 2 | $2 \times 20$ | 40 | |…
-
warm-up here are two signs for two different rides at an amusement park…
Roller coaster
-
aring data sets shana is fostering two kittens, janet and mr. paws. the…
s: - The median amount of Janet’s food is $\boldsymbol{\text{less than}}$ the median amount of Mr. Paws’ food. - The range of Janet’s food is $\boldsymbol{\text{less than}}$ the r…
-
four math classes recorded and displayed student heights to the nearest…
# Explanation: ## Step1: Recall skewed left definition A left - skewed (negatively skewed) histogram has a longer tail on the left side. This means that the majority of the data i…
-
1. noah reads 20 pages of a novel each day. he wants to determine the n…
The independent variable is $d$ (number of days Noah reads), and the dependent variable is $p$ (number of pages Noah reads). The total pages read ($p$) depends on how many days ($…
-
on your restaurants menu, you need to make sure that \\(\\frac{3}{4}\\)…
12
-
examine los datos dados para un tallo de maíz. día, ( x ): 9, 12, 22, 4…
$a \approx -76.5$ $b \approx 37.8$ Día más cercano: 51 días
-
the number represented by the model is different depending on which blo…
Smallest block represents 1: $2033$ Largest block represents 1: $2.033$
-
lesson check (cc.6.ns.8) 1. richie wants to paint his bedroom ceiling a…
1. $\boldsymbol{\frac{8^2(4+1)}{40}}$ (Option A) 2. $\boldsymbol{A. 9 boxes}$ 3. $\boldsymbol{B. 16 tickets}$ 4. $\boldsymbol{C. 69}$ 5. $\boldsymbol{A. 2.5 pounds}$ 6. $\boldsymb…
-
antonio is renting a car on vacation. cost 0 100 200 miles driven 0 25 …
According to the graph, the miles driven is a function of the cost of the car rental.
-
name for enslaved laborers in sparta; from the greek word meaning \capt…
C. helots
-
3. the temperature in city c is greater than 2°c. let c represent the t…
The inequality is \( \boldsymbol{c > 2} \). To graph it, place an open circle at \( 2 \) on the number line and draw an arrow pointing to the right (towards positive infinity).
-
which question would likely have a variety of answers and could be anal…
A. How many hours do ninth graders spend on homework each week?
-
which of the following is a statistical question? ○ what is the average…
A. What is the average height of students in the ninth grade at our school?
-
given the data points (1, 3), (2, 5), and (3, 7), what is the equation …
B. y=2x+1
-
which of the following best describes the purpose of a line of best fit…
To show the general trend of the data points.
-
given the data points (1,2), (2,3), (3,5), and (4,4), which equation is…
D. $y=0.5x+2$
-
what would a perfect negative correlation look like on a scatterplot? ○…
All points lie on a straight line that slopes downward from left to right.
-
if the points on a scatterplot trend upward from left to right, what ki…
Positive correlation