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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7 solve the following equation: \\(log_{4} (3x - 1) = log_{4} (2x + 3)\…
A. 4
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18 this question has two parts. first, answer part a. then, answer part…
parts of life, such as work, home, or entertainment
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what does a correlation coefficient reflect? relationship between two v…
A. Relationship between two variables
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averages: mean, median & mode data and graphing worksheet find the mean…
| Given Set | Mean | Median | Mode | |-----------------|------|--------|------| | a. 4, 4, 3, 9, 5 | 5 | 4 | 4 | | b. 8, 4, 5, 8, 5, 4, 8 | 6 | 5 | 8 | | c. 10, 13, 11, 13, 13 | 1…
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which do most psychologists and statisticians accept as real statistica…
A. $p <.05$
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15. how does the author establish a main disadvantage of virtual school…
by explaining the challenges students face when dissecting a frog at home
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2) identify the type of sampling used. an independent research company …
Cluster sampling
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type your answer in exactly as one of the following: population, sample…
1) POPULATION 2) CLUSTER
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type your answer in exactly as one of the following: population, sample…
1) B. Experiment 2) convenience
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type your answer in exactly as one of the following: population, sample…
1) B. Experiment 2) stratified
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the correlation coefficient between two observed variables is -.84. fro…
C. As one variable increase, the other is likely to decrease, showing an inverse relationship.
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20. a jar contains 6 chocolate, 9 peanut butter, and 11 oatmeal cookies…
$\frac{63}{325}$
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14 part b which sentence from the passage best supports the answer to t…
The option "However, as convenient as they may be, they can never take the place of a teacher" (the fourth option in the first set of options for question 14 Part B).
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4. an accountant calculated the total salaries paid by each client corp…
The mean is \(\$24,577,416\) ### Part B: Find the Median
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13. the question has two parts. first, answer part a. then, answer part…
B. unable to be withdrawn or taken back (assuming the second option is labeled B; if the original options had labels like A, B, C, D, we use the correct label with text. From the …
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type your answer in exactly as one of the following: population, sample…
1) OBSERVATIONAL STUDY 2) VOLUNTARY
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type your answer in exactly as one of the following: population, sample…
1) undercoverage 2) voluntary
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directions: writing a story from a graph 1. look closely at the graph. …
A possible story: "At the race’s start, Kristen (purple) led with a head start, Evie (blue) trailed, and Leslie (red) began from 0 distance. Leslie then sped up, her red line stee…
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12-17-25-unit 4 post test- a christmas carol the following is a charact…
C. both of the above
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type your answer in exactly as one of the following: population, sample…
undercoverage convenience
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type your answer in exactly as one of the following: population, sample…
1) biased 2) systematic
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type your answer in exactly as one of the following: population, sample…
1) biased 2) convenience
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type your answer in exactly as one of the following: population, sample…
biased stratified
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type your answer in exactly as one of the following: population, sample…
nonresponse stratified
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which best describes a scientific poll? ○ it is the same as a straw pol…
C. Its sample accurately reflects the universe.
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type your answer in exactly as one of the following: population, sample…
OBSERVATION ### Question 2
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multiply using scientific notation: \\((4 \\cdot 10^3) (6 \\cdot 10^2)\…
\(2.4\cdot10^{6}\) (the last option, e.g., if the last option is \(2.4\cdot10^{6}\), then the answer is that option with its label)
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type your answer in exactly as one of the following: population, sample…
observation stratified
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choose the larger number: $5.9 \\cdot 10^5$ $6.5 \\cdot 10^4$
\(5.9 \cdot 10^{5}\)
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9. which forecast accuracy measure expresses error as a percentage? * 1…
C. MAPE ### Question 10
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as jacqueline searched for books, she discovered something that really …
The text evidence is: "It took some poems from a teacher and a prize for her writing for Jacqueline to feel confident. Also, at first, she found poetry to be difficult, but that c…
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7. basic exponential smoothing is most useful for generating forecasts …
B. Has no clear trend or seasonality ### Question 8
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2) identify the type of sampling used: marianne wanted to know students…
Convenience sampling
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estimate the amount of the tip by rounding the bill to the nearest doll…
15
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5. what is the main purpose of applying a moving average to a time seri…
C. To smooth short - term fluctuations ### Question 6
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what are the main elements of a project status update? (choose two) wha…
A. What has been completed within a specific time period. C. What is forecast to be completed in the next time period.
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divide using scientific notation: \\(\\frac{8.4 \\cdot 10^7}{2.1 \\cdot…
4. \( 4 \cdot 10^5 \)
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1. a dataset shows sales increasing steadily over several years with no…
C. Trend ### Question 2
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write in standard form: $3.7 \\cdot 10^6 =$
\( 3700000 \)
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short answer 1. solve $20 = 14 - 2x$ 2. solve $45q - 29 = 52q - 99$ 3. …
To solve these problems, we'll address each one step by step. Let's start with problem 2: Solve \( 45q - 29 = 52q - 99 \). ### Step 1: Subtract \( 45q \) from both sides To get al…
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averages: mean, median & mode data and graphing worksheet find the mean…
| Given | Mean | Median | Mode | | --- | --- | --- | --- | | a. \(4, 4, 3, 9, 5\) | \(5\) | \(4\) | \(4\) | | b. \(8, 4, 5, 8, 5, 4, 8\) | \(6\) | \(5\) | \(8\) | | c. \(10, 13, 1…
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type your answer in exactly as one of the following: population, sample…
B ### Question 2
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question chase’s math teacher finds that there’s roughly a linear relat…
A student’s expected quiz score if they spent 1 hour on their homework.
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question 43 1 pts which amendment gave citizenship and full rights to f…
C. 14th Amendment ### Question 44
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write in scientific notation: 0.0000061 6.1·10⁻⁵ 6.1·10⁻⁶ 6.1·10⁵ 6.1·1…
\( 6.1 \cdot 10^{-6} \) (the second option)
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8-what does \volatility\ refer to in financial markets? * a) how stable…
B) How quickly and how much the price moves ### Question 9
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estimate the amount of the tip by rounding the bill to the nearest doll…
16.8
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question claire’s math teacher finds that there’s roughly a linear rela…
The change in expected quiz score for every additional one hour students spend on their homework.
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question 6. the chang family is on their way home from a cross - countr…
C. 1,380; The Chang family is 1,380 miles from home after 15 hours of driving
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6-currency value is most directly influenced by: * a) the number of tok…
B) Demand and supply in foreign exchange markets ### Question 7
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interpret linear equation in context (mc) question starting at noon, mi…
The amount of snow on the lawn at 12:01 p.m.
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question carloss math teacher finds that theres roughly a linear relati…
The number of hours a student should spend on their homework to expect a score of 92 on the quiz.
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question nakeisha is going to the amusement park, where she has to pay …
The total amount of money Nakeisha will spend if she goes on 1 ride.
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7 multiple choice 1 point _______ attacks are when you attack the perso…
D. Ad hominem ### Question 8
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why is economic development important in countries? a it usually means …
C. It reduces poverty and increases social and political stability.
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estimate the amount of the tip by rounding the bill to the nearest doll…
10
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use the information to complete the following sentence. the function ( …
25
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estimate the amount of the tip by rounding the bill to the nearest doll…
10.6
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4. create and solve a story problem about a baker and some flour whose …
The baker will use 2 kilograms of flour.
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several years ago, frederick and gail each bought a boat on the same da…
54856.00
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given a real - world context, write ratios to show the relative sizes o…
### Animal Shelter (Cats to Total Animals): - Simplest ratio: $\frac{31}{50}$ (or 31:50, 31 to 50) - Additional ratios: $\frac{62}{100}$, $\frac{93}{150}$, $\frac{124}{200}$ (or 6…
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tyreese invests $750 in an account that pays 3.8% simple annual interes…
\(\$1035\)
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4. a jar contains 8 chocolate, 9 peanut butter, and 11 oatmeal cookies.…
\(\boldsymbol{\frac{63}{325}}\) (the option with \(\frac{63}{325}\))
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1. you randomly choose blocks from the set. if you choose two blocks at…
\(\frac{1}{33}\) (the first option: \(\frac{1}{33}\))
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niceville community plans to invest $1,200 to host a concert. the commu…
\$80 ### Second Problem (Card Game)
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bluebonnet learning k-5 math lesson 15 problem set 3. jill and matt pla…
Matt completes the homework faster. The difference is 14 minutes (or $\frac{7}{30}$ of an hour).
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% chance of rain. how much money can the community expect to make? ou p…
The expected amount to win is approximately \(\$0.65\) (or \(\frac{17}{26}\) dollars). ### Third Question (Raffle Ticket Expected Gain)
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ney invested. the weather forecast for the day of the concert is chance…
The expected win is approximately \(\$1.29\) (or \(\frac{67}{52}\) dollars exactly).
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11 0.056 ÷ -0.004
\(-14\)
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8 it is $-12.5^circ$c outside when the temperature starts increasing by…
3 hours
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7 over 4 days, krista deposited $45 into her bank account, transferred …
The mean change per day is \$14.
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which of the following options have the same value as 10% of 33? choose…
C. \( \frac{1}{10} \cdot 33 \), D. \( 0.1 \cdot 33 \), E. \( \frac{10}{100} \cdot 33 \)
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read the excerpt from dispatches. you came to love your life, to love a…
a soldier who is always vigilant
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heather is a cashier. she can ring up 12 customers in 9 minutes. at thi…
3
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which excerpt from \harrison bergeron\ best illustrates irony? hazel ha…
The option: "And she had to apologize at once for her voice, which was a very unfair voice for a woman to use. Her voice was a warm, luminous, timeless melody."
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the tape diagram shows that rita answered 14 questions correctly on a p…
For "350% of the correct pre - test questions": 14 For "50% of the correct pre - test questions": 2 For "100% of the correct pre - test questions": 4
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alicia drove at a constant speed and traveled 183 miles in 3 hours. how…
671
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here are the numbers of times 11 people ate out last month. 5, 6, 0, 4,…
No mode
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the following list gives the number of pets for each of 10 students. 1,…
1, 4
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write the following ratio using two other notations. \\(\\frac{8}{5}\\)…
Notation one: $8:5$ Notation two: $8$ to $5$
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write the following ratio using two other notations, 2 to 3 use only th…
Notation one: $\boldsymbol{\frac{2}{3}}$ (using the fraction box with 2 in the numerator and 3 in the denominator) Notation two: $\boldsymbol{2:3}$ (using the $\square:\square$ bo…
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(a) answer the questions below. is there a cluster from 16 to 19? yes ○…
Yes #### Second Question: Is there a gap from 20 to 21?
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data analysis and probability identifying peaks, symmetry, gaps, and cl…
### Part (a) #### 1. Is there a gap from 20 to 21? # Explanation: ## Step1: Analyze dot plot for 20 - 21 Check dots between 20 and 21. The plot has no dots at 20, 21 (dots at 17,1…
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a teacher recorded the time (in minutes) 12 students each spent on a qu…
Yes
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which of the following is the interpretation of the y - intercept of th…
A. the mass of the can only
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screw hooks are used to hang plants and other decorations from walls an…
The y - intercept represents the mass of the can when the number of screw hooks (\(x\)) is \(0\) (i.e., the mass of the empty can).
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train travel, a timeless mode of transportation, ____ long captivated t…
B. has
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adapted from a hazard of new fortunes by william dean howells march bla…
D. He spends too much money on books.
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question 15. c. ✓ ( y leq 40 ) d. (square) ( y geq 40 ) e. ✓ ( y leq 1.…
42
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tom is training to run a race. he wants to run no more than 40 miles pe…
C. \( y \leq 40 \), E. \( y \leq 1.1x \) (assuming E is \( y \leq 1.1x \) as per the image) But since the options are labeled A to E, and E is \( y \leq 1.1x \), the correct optio…
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question 10. - mia and carmen plan to save $300 each. - each girl will …
Carmen saves faster (assuming the question is about comparing savings rates, with Carmen's rate 15 and Mia's 12).
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marjorie bought a new car with some miles already clocked on it. she ke…
The line has a positive, constant slope (it is a straight, increasing line, indicating a constant rate of increase of car mileage with respect to the number of days).
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31. andrew needs at least 60 pencils (x) and markers (y) for his class …
\( 12x + 6y \geq 60 \) (or simplified \( 2x + y \geq 10 \)) ### Problem 31 - Part B
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at the beginning of the month, there were 80 ounces of peanut butter in…
A) $\frac{2}{3}\cdot80$
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noahs oven thermometer gives a reading that is 2% greater than the actu…
a. $\boldsymbol{331.5}$ b. $\boldsymbol{74.5}$
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a watermelon weighs 8,475 grams. a scale measured the weight with an er…
7458
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the depth of a lake is 15.8 m. a. jada accurately measured the depth of…
a. \(16\) b. \(0.2\) c. \(1.27\)
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63. the expression 1.08 represents accrued 8% interest on the principal…
D. \( \frac{27}{25}\)
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the line graph above shows the number of text messages that shad receiv…
The bottom - middle histogram (the one with the striped bars, the second histogram in the middle row, bottom one)
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in a high school basketball game, sarah scored 10 points in the first h…
B. 7