Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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a total of 720 tickets were sold for the school play. they were either …
325
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here are yesterdays high temperatures (in fahrenheit) in 16 u.s. cities…
The box - and - whisker plot has: - Minimum: \(48\) - \(Q_1\): \(53\) - Median (\(Q_2\)): \(64.5\) - \(Q_3\): \(75.5\) - Maximum: \(82\) When plotted on the given number line, the…
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21. number sense maya has 462 pennies. use mental math to find how many…
12
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for the data given below, answer parts (a) through (d) x: -19, -16, -14…
B
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michael drove 268 miles using 12 gallons of gas. at this rate, how many…
201
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for the data given below, answer parts (a) through (d) | x | -19 | -16 …
B. \( y = 3.9613x + 178.4307 \)
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for the data given below, answer parts (a) through (d) | x | -19 | -16 …
D
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dante runs 6 miles in 55 minutes. at the same rate, how many miles woul…
4.8
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the following data lists the ages of a random selection of actresses wh…
# Explanation: ## Step1: Calculate differences (d) First, we find the differences \( d = \text{Actress Age} - \text{Actor Age} \) for each pair: - \( 30 - 68 = -38 \) - \( 30 - 40…
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for the data given below, answer parts (a) through (d) | x | -19 | -16 …
\(y = 4x + 178\)
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use technology to perform a linear regression to determine the equation…
\( 46.05 \)
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a proportional relationship is shown in the table below: x 0 1.3 2.6 3.…
\(\frac{10}{13}\) (or approximately \(0.77\))
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kala is driving a racecar. the table below gives the distance d(t) (in …
(a) \( 36.9 \) meters per second (b) \( 33.9 \) meters per second
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a baker bakes 1,632 muffins and packs them all into boxes of 24 muffins…
A. 68
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type the correct answer in the box. use numbers instead of words. a lib…
28
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type the correct answer in the box. use numbers instead of words. sarah…
112
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arthur and tavon each calculated lines of best fit for their last five …
To support or refute Arthur’s claim, we analyze residual plots: - A good linear model has residuals **randomly scattered near the \( x \) - axis** (small residuals) with **no clea…
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in the city of erie, 8 meters of snow fell in 20 days. at this rate, ho…
(for part a): $\boldsymbol{\frac{8}{20} = \frac{A}{60}}$ (or $\frac{A}{60}=\frac{8}{20}$, $\frac{20}{8}=\frac{60}{A}$, $\frac{60}{A}=\frac{20}{8}$ are also correct as long as the …
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review 8. two cards are selected from a standard deck of 52 cards, one …
$\frac{11}{221}$ ### Problem 9
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how can the graph of the line of best fit be used to make predictions a…
First blank: independent variable; Second blank: dependent variable
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priya’s pet store never has more than a combined total of 20 cats and d…
B. The graph labeled B (with vertical line at \( x = 8 \) and line \( y=-x + 20 \))
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the stem-and-leaf plot below gives the typing speeds of two groups of s…
### Part (a) # Explanation: ## Step 1: Find median of Group 1 Group 1 has 19 students. The median is the 10th value (since \((19 + 1)/2 = 10\)). Let's list the data from the stem …
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prefixes and suffixes are important in science to help understand the m…
D. water (assuming the options are labeled A to D with A: temperature, B: life, C: air, D: water)
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there are 300 seventh - grade students at amaya’s school. a random samp…
\(300\times\frac{16}{25}\)
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linear regression below is data collected on how long statistics studen…
Positive ### Part b)
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jason deposits $300 into an account that earns 5% annual compound inter…
Jason will have more at the end of 15 years.
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describe how the values of a and b in the linear model $y = ax + b$ are…
First blank: slope Second blank: y - intercept
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jen is going to save $3,000 for retirement over 20 years. which option …
Jen should go with Option B (a compound interest account with a 1.75% annual interest rate) as it results in a higher total amount ($\approx 4244.33$) compared to Option A ($4110$…
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3. a coach is taking his high school x-country team to ottawa for ofsaa…
### For 2006: #### Mean: ## Step1: Sum the temperatures The temperatures are \(5^\circ\text{C}\), \(4^\circ\text{C}\), \(3^\circ\text{C}\), \(4^\circ\text{C}\). The sum is \(5 + 4…
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27. write the equation of the line in point slope form that is perpendi…
\( y - 1=\frac{3}{4}(x - 6) \) (assuming the problem meant parallel instead of perpendicular, as the slope used in the answer matches the slope of the given line)
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dylan earns 3.7% simple interest on his principal amount of $10,500. no…
$\$10888.5$
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an employee puts $5,000 into a retirement account that offers 9.5 inter…
The amount of interest earned is approximately $\$2871.15$.
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3. un martin-pêcheur est un oiseau qui se nourrit de poissons quil capt…
10 mètres
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martina is running. the number of minutes she has run varies directly w…
(a) \(\boxed{5}\) (b) \(\boxed{0.2}\) (or \(\frac{1}{5}\), but 0.2 is decimal) Wait, but maybe the slope is calculated as \( \frac{x}{y} \) for calories per minute, but no, slope …
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martina is running. the number of minutes she has run varies directly w…
(a) 0.25 (b) 0.25
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gavin opened a savings account with a principal balance of $2,250 and w…
The total amount Gavin will have in his account at the end of 6 years is approximately $\$2597.36$ (or $\$2597.35$ depending on the calculator precision). If we round to the neare…
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mai is riding her bike. the number of revolutions (turns) her wheels ma…
(a) \( \boldsymbol{0.2} \) (or \( \boldsymbol{\frac{1}{5}} \)) revolution(s) per foot (b) \( \boldsymbol{0.2} \) (or \( \boldsymbol{\frac{1}{5}} \))
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lesson 5 practice problems 1. the cell phone plan from company c costs …
Using 2 gigabytes of data on Company C's plan costs $40 per month. ### Part (b)
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the table shows the results of a survey of 200 randomly selected people…
The marginal relative frequency for people who do not like cantaloupe is $\frac{91}{200}$ (or 0.455).
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a relative frequency table is made from data in a frequency table. freq…
27% (Option: 27%)
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last month jen drove her car 4,404.6 miles. that brought the car’s tota…
The car's total mileage before last month was \(74107\) miles.
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the two - way table represents data from a survey asking schoolchildren…
A. 4%
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2. try to reduce in one step. (1) $\frac{14}{42}=$ (2) $\frac{21}{42}=$…
(1) \(\frac{1}{3}\) (2) \(\frac{1}{2}\) (3) \(\frac{3}{4}\) (4) \(\frac{2}{5}\) (5) \(\frac{7}{9}\) (6) \(\frac{2}{3}\) (7) \(\frac{1}{4}\) (8) \(\frac{2}{3}\) (9) \(\frac{3}{5}\)…
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5.) students at albion middle school are given a fitness test. the resu…
### Part (a) #### Evan: # Explanation: ## Step1: Identify distance and time Evan runs \(1\frac{1}{2}=\frac{3}{2}\) miles in 15 minutes. ## Step2: Calculate time per mile To find t…
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a group of 75 math students were asked whether they like algebra and wh…
a = 29, b = 16, c = 24, d = 30, e = 22 (the last option: \( a = 29, b = 16, c = 24, d = 30, e = 22 \))
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an informal survey was taken at a farmer’s market. people were asked wh…
B. a = 12%, b = 18%
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at the kansas city airport, a group of pilots for skyways and yellow je…
Yellow Jet, going east
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linear regression below is data on how many absences a student has each…
A. Negative ### Part b)
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a rocket is shot off from a launcher. the accompanying table represents…
First, we use a quadratic regression calculator (or software) to find the quadratic equation \( y = ax^2 + bx + c \) for the given data points \((0.3, 40)\), \((0.8, 101)\), \((1.…
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a soccer coach surveyed the players to determine the number of players …
A. \(a = 27\%\)
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in a parking lot, ____ out of ____ vehicles are black. what fraction, d…
Fraction: \( \frac{5}{8} \), Decimal: \( 0.625 \), Percent: \( 62.5\% \) (assuming total vehicles 80, black vehicles 50). Wait, but maybe the grid is 10x8, shaded 50. So the fract…
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a group of 55 football players was polled about which synthetic grass t…
D. \( x = 13 \), \( y = 17 \), and \( z = 15 \) (assuming the last option is D, but as per the options given, the correct one is \( x = 13 \), \( y = 17 \), and \( z = 15 \))
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1 demarco has a piece of ribbon that is 6 yd long. he uses a piece that…
Demarco has 4 pieces of $\frac{3}{4}$ yd long ribbon.
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6. a dozen eggs costs $3.84. at this rate, how much would 50 eggs cost?
$16$
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jonah’s water bottle can hold up to 12 ounces. how much water can the b…
Any value less than or equal to 12 (and for the number line representation, we would mark 12 with a closed circle and draw an arrow to the left to represent all values from negati…
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4. a gym membership is advertised to cost $630 per year. what is the co…
The cost per month of the gym membership is $52.50.
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3. a postal carrier can deliver to 130 houses in a 2.5-hour period. at …
6
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multiply. \\(\\frac{4}{9} \\times \\frac{2}{7}\\)
\(\frac{8}{63}\)
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3. a postal carrier can deliver to 130 houses in a 2.5-hour period. at …
6 hours
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1. using the table below, answer the following questions: | x | y | |--…
Yes ### Sub - question 2: If it is a function, find the y - intercept.
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based on the data shown below, calculate the correlation coefficient (t…
\(-0.905\)
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angela started walking in march and kept track of how many miles she wa…
Angela walked 20 miles in March.
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angela started walking in march and kept track of how many miles she wa…
\(20\)
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question 9 12 pts based on the data shown below, calculate the correlat…
\( -0.905 \)
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heather is a cashier. she can ring up 12 customers in 9 minutes. at thi…
3
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angela started walking in march and kept track of how many miles she wa…
\( 1.5(m + 8) = 42 \) (or equivalent like \( \frac{3}{2}(m + 8)=42 \))
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which is the best way to complete the text? the voyager 1 space probe, …
B. music, and was
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solve the following problems. draw a picture, and write the number sent…
The total liters of beverages Sam brought to the party is $\boldsymbol{1\frac{5}{12}}$ liters (or $\frac{17}{12}$ liters). The number sentence is $\frac{2}{3} + \frac{3}{4} = \fra…
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6. when i add two numbers in scientific notation i coefficients and sel…
The sum of \((2.2\times10^{2})+(8.6\times10^{-2})\) is \(220.086\) (or \(2.20086\times10^{2}\) in scientific notation).
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5. when i multiply two numbers in scientific notation i coefficients an…
\( 6.16 \)
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Question was provided via image upload.
$1\frac{3}{8}$ (or $\frac{11}{8}$) tanks of gas.
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6-5. given the sequence 7, 11, 15, 19, ... homework help a. what kind o…
La secuencia es una secuencia aritmética. ### Parte b
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1. when i subtract two numbers in scientific notation i coefficients an…
\(-1.98 \times 10^3\) (or equivalent correct form after subtraction in scientific notation)
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the weekly sales of golf balls increased from 5000 to 6000 during the m…
C. 20%
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in a parking lot, ____ out of ____ vehicles are black. what fraction, d…
Fraction: \(\frac{3}{5}\), Decimal: \(0.6\), Percent: \(60\%\) (Assuming 60 out of 100 vehicles are black. If the actual count of shaded squares is different, adjust accordingly. …
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based on the data shown below, calculate the correlation coefficient (t…
\( 0.592 \)
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6 of 13 y.1 find the constant of variation robert walked a total of 13.…
1.1
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weekly practice 3 1. which list of numbers shows 1.7, 1\\frac{4}{5}, 1\…
\(4\) ### Question 6:
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marge needs more than 3 people to start her poetry club. write the ineq…
\( p > 3 \)
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name ashley.v hour 4 scar island chapters 22-30 discussion questions: p…
Jonathan knelt on the sinner’s sorrow as an act of defiant endurance, resisting the punitive system of Slabhenge and asserting his resolve. ### Question 2
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8 of 13 x.11 write and solve equations for proportional relationships h…
\( 4x \)
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a grade 6 4.10 solving percent problems what is 85% of 120? 85% of 120 …
102
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of the members of a student choir, 60% are boys. if there are 21 boys i…
B. 35
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of the members of a student choir, 60% are boys. if there are 27 boys i…
Wait, maybe I misread the percentage. Wait, maybe the percentage is 60%? Wait, no, maybe the percentage is 60% and the options are wrong. But according to the calculation, the tot…
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test prep celia rides her bicycle for 2 hours. how many hours does she …
630
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12 of 13 1 write equations for proportional relationships from tables a…
\( y = 2x \)
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you can spend at most $3.75 at a market. apples cost $0.40 each, and pe…
yes
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a marketing team is asked to come up with an ad, slogan and jingle for …
A. Social loafing
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multiply multiples of 10 by 1 - digit numbers 1 mp use structure mrs. j…
240
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mrs. boyd had a piece of yarn that was cut into multiple pieces. - ther…
12 inches
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7. alicia uses 200 beads to make bracelets for a craft fair. she uses 4…
800
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6. a game store sells video games for $22. the game st expects to sell …
B. about $160
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sarah wants to write a word problem using the model below. which best d…
d. Sarah has 3 friends. She wants to give each friend 4 cookies. She needs to make 12 cookies.
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choose the most appropriate completion of the sentence. in order to ind…
A. near -1 or 1
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the correlation coefficient, r, is a number between ○ −∞ and ∞ ○ 0 and …
-1 and 1 (the last option: \(\bigcirc\) -1 and 1)
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sam houston annexation to the u.s. what does annexation mean? answer wh…
### What does annexation mean? Annexation is the incorporation of a territory (e.g., a region, state) into another country/government’s jurisdiction, making it part of that politi…
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there are days in november. this year, only of those days were sunny. w…
Fraction: \( \frac{1}{5} \), Decimal: \( 0.2 \), Percent: \( 20\% \)
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here are the scatter plots for two sets of bivariate data with the same…
The second variable (w) has a stronger relationship with the response variable y.
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Question was provided via image upload.
\(<\)
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the word audience contains the root aud. what does the root aud mean? m…
hear or listen