Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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*2. sharlas batting average in softball is $0.58\\overline{3}$. which f…
d. 7/12
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question find the equation of the exponential function represented by t…
$y = 0.02(4)^x$
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tasty things bakery recently sold 20 desserts, including 2 slices of pi…
$\frac{1}{10}$
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does the graph of $x \\geq 13$ have an open circle or a closed circle a…
closed: ●
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elevations are measured compared to sea level. an elevation of 0 feet i…
1. -5 ft, -2 ft 2. $x < 0$ 3. The left number line (open circle at 0, shading to the left towards negative numbers)
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elevations less than 0 feet is \below sea level\ which two of these ele…
A. -5 ft, B. -2 ft
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9. expand the logarithmic expression. $ln \frac{x}{3y} = square$
$\ln x - \ln 3 - \ln y$
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fraction word problems 1. (text is unclear and incomplete) answer $\fra…
$\frac{1}{5}$ ---
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1. matthew has 8 pencils. three of them do not have erasers on the end.…
$\frac{1}{3}$
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8. 45¢, 45¢, 50¢, 50¢, 75¢ the price of five different packs of crayons…
B. 50¢
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fraction word problems 1. matthew has 8 pencils. three of them do not h…
$\frac{3}{8}$
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7. 35, 30, 30, 40, 45 the number of minutes five people exercised on a …
B. 35
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6. in which data set or sets below does the median equal 100? a. 50, 10…
A. 50, 100, 100, 200
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5. in which data set below is the median 37? a. 30, 37, 50, 12, 8 b. 30…
C. 37, 35, 39, 37, 37, 39
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4. 405, 400, 425, 450, 540 determine the median of the set of data abov…
C. 425
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3. 21, 12, 17, 17, 8 the number of birds spotted by 5 people on a bird …
D. 17
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13. connect concepts a city dumps plastic shade balls into a reservoir …
The city can purchase no **more** than **12,500** shade balls.
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ential growth functions what is the rate of change of the function desc…
5
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the ordered pairs show amounts y (in inches) of rainfall equivalent to …
about 0.57 inches of rain Justification: A linear regression model \(y \approx 0.1058x - 0.0663\) was fitted to the given (snow, rain) data points. Substituting \(x=6\) (inches of…
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1. to find the median of a set of a data, you: a. add all the numbers i…
B. Put the numbers in order from smallest to largest and then find the number in the middle.
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12. a store sells $2\\frac{1}{4}$ pounds of mulch for every $1\\frac{1}…
108 pounds of mulch 72 pounds of gravel
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listen 11. connecting to real life you mix 0.25 cup of juice concentrat…
2 cups of juice concentrate 16 cups of water
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tea (cups) milk (cups) 3.75 1.5 a □ 1 b □ 3.5 c □ 2.5
$a = 2.5$, $b = 8.75$, $c = 6.25$
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14. use the information to answer part a and part b. farmer bill plante…
14. Part A: 31 more sweet corn plants Part B: 816 ears of corn 15. 9 kids 16. B. $2\frac{1}{4}$ 17. B. $\frac{8}{9}$
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at 11:59 am complete: 44% lation (scatter plot) t from data table best …
41 hot cocoas
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sample response: mr. rodriguez made a reasonable inference. his samplin…
- The ratio in the sample is 12/60, or 0.2. - The sample was random. - The sample was chosen without bias. - The sample size was large enough.
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10. add the following fractions. do not simplify the answer. select the…
10. A. $\frac{6}{5}$ 11. 25712 12. A. $\frac{1}{2} = \frac{2}{4}$, B. $\frac{3}{3} > \frac{5}{12}$, D. $\frac{3}{5} > \frac{1}{6}$
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apply. ☑ $1,203 - d = 758 ☐ $d - 1,203 = 758 ☐ $d - 758 = 1,203 ☐ $758 …
1. Valid equations: - $1,203 - d = 758$ - $1,203 - 758 = d$ 2. 2A: $s - 37.50 = 73.29$ (or $73.29 + 37.50 = s$) 3. 2B: $\$110.79$ 4. 3: 12 5. 4: $3\frac{4}{5}$ (or $\frac{19}{5}$)
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left on the card, y, as a function of the number of cups of coffee she …
### (i) The rate of change is $-3$. It represents a decrease of $\$3$ in the amount on the gift card for every cup Nevaeh purchases. ### (ii) The initial value is $\boldsymbol{25}…
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nevaeh uses a gift card to buy a cup of coffee every morning. the table…
The rate of change is $\boldsymbol{-3}$. It represents a decrease in the amount on the gift card Nevaeh purchases.
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9. find the missing values in the ratio table. then write the equivalen…
Missing tea values: 8.75, 6.25 Equivalent ratios: $3.75:1.5$, $2.5:1$, $8.75:3.5$, $6.25:2.5$ (all simplify to $5:2$)
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use the information to answer questions 3 and 4. two number cubes are r…
3. $0.15$ 4. $0.05$
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the total number of characters wesley knows, $y$, is a function of the …
- Rate of change: $20$, represents the number of characters Wesley learns each week. - Initial value: $60$, represents the number of characters Wesley knows at the start of summer…
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the total number of characters wesley knows, $y$, is a function of the …
- Rate of change: $20$, represents the number of characters Wesley learns each week. - Initial value: $60$, represents the number of characters Wesley knows at the start of summer…
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at the start of summer vacation, wesley decides to learn a number of ka…
## Rate of change: The rate of change is $20$. It represents the number of characters Wesley learns each week. ## Function: $y=20x+60$ ## Initial value: The initial value is $60$
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today 2. the spinner is spun 50 times. based on the results from the ta…
$\frac{3}{5}$ or 0.6
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5 fill in the blank 1 point 5 f is the independent variable | f | 3 | 5…
$25f$
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multiple select question select all that apply which of the following a…
A. They can be used for quantitative data. B. They can be used for qualitative data. C. No observation can fit into more than one class.
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multiple choice question which of the following best describes a freque…
A. A grouping of qualitative data into classes showing the number of observations in each class.
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multiple choice question the value shown on the vertical axis of a cumu…
counting the number of observations less than the upper limit of the class
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4. kofi plans to run 30 miles this week. he wants to run the same numbe…
### Question 4: Kofi is not correct. If he runs $\frac{7}{30}$ mile each day for 7 days, he only runs $\frac{49}{30}$ miles total, which is much less than his 30-mile goal. To run…
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santiago buys a container of milk to make atole. the cups of milk left …
$y=-4x+16$
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inferring from a ratio mr. rodriguez asked 60 randomly chosen students …
Yes, Mr. Rodriguez made a reasonable inference. 20% of the randomly selected 60 students chose science fiction, and applying this proportion to the 150 total students gives $0.2 \…
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name armani: t date 1. solve using a tape diagram. a. $\frac{1}{4}$ of …
a. 6 b. 12 c. 12 d. 6 e. 21 f. 36 g. $10\frac{1}{3}$ h. 8 i. $6\frac{1}{4}$ j. 15
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multiple choice question a frequency distribution table shows the numbe…
Frequency is plotted on the vertical axis and the class midpoint is plotted on the horizontal axis.
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the equivalent ratios are $20: \\frac{1}{6}$, $\\square:\\frac{2}{3}$ ,…
The missing number is $\boldsymbol{80}$
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multiple choice question which of the following operations is true rega…
A. The relative frequency is found by dividing the class frequencies by the total number of observations.
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5 of 10 concepts completedmultiple choice questionwhich of the followin…
It can show the total number of observations less than a particular class' upper limit.
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multiple choice question which one of the following is true regarding r…
Raw data are simply a listing of data before summarizing it.
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9. find the missing values in the ratio table. then write the equivalen…
Missing tea values: 8.75, 6.25 Equivalent ratios: $3.75:1.5$, $2.5:1$, $8.75:3.5$, $6.25:2.5$ (all simplify to $5:2$)
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multiple choice question in a frequency polygon the points are plotted …
class midpoints
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ordering question click and drag on elements in order place the followi…
1. Decide on the number of classes. 2. Determine the class interval. 3. Set individual class limits. 4. Tally the number of observations in each class.
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4. the new vigo the vampire hunter novel is 520 pages. skyler has read …
a. Ramon reads faster. b. Approximately 16.77 hours (or exactly $\frac{520}{31}$ hours). Ramon's reading rate is 31 pages per hour, so dividing the total 520 pages by this rate gi…
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multiple choice question which of the following features is not part of…
The frequency of occurrence of a nominal variable.
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solve problems involving inferences and sample size and write about the…
Most students in the school would like to have more laptops available in the library.
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5. a bag contains: • 3 blue marbles • 4 red marbles • 11 green marbles …
1. The experimental probability of drawing a blue marble is $\frac{11}{45}$ (or approximately 0.244) 2. The experimental probability of both coins landing on tails is $\frac{13}{5…
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calories 20 □ 10 90 miles $\frac{1}{6}$ $\frac{2}{3}$ □ □ the equivalen…
The missing values are: - Calories for $\frac{2}{3}$ miles: $80$ - Miles for 10 calories: $\frac{1}{12}$ - Miles for 90 calories: $\frac{3}{4}$ Filled table pairs: $80:\frac{2}{3}…
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multiple choice question suppose that the miles per gallon for 80 cars …
0.20
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multiple choice question the mode of a set of data is _______. ○ the va…
the value or values that occur most often
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multiple choice question a relative frequency distribution shows: ○ the…
the fraction or percentage of observations in each class interval
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multiple choice question what is the final step in creating a frequency…
Count the number of observations in each class.
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multiple choice question which one of the following is not a characteri…
It summarizes qualitative data.
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fill in the blank question the ______ of a set of data is the value or …
mode
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jada knit a total of 15 centimeters of scarf over 3 nights. how many ni…
19 nights
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multiple choice question which of the following is a feature of a relat…
The sum of the relative frequencies must be one (assuming no rounding errors).
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lorenzo jarred 15 liters of jam after 5 days. how much jam did lorenzo …
30 liters
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identify whether the table given below is a frequency table or a freque…
This is a frequency table.
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name:date: february 10, 2016 period: 3/4/4bassignment - probability, da…
$\frac{1}{9}$
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norma took a total of 12 quizzes over the course of 3 weeks. how many w…
10 weeks
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2 look at the example. suppose only 5 classrooms share 4 packages. how …
Each classroom would get $\frac{4}{5}$ of a package. The model would show 4 total packages split equally into 5 parts (each classroom's share), and the answer is the reciprocal of…
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larry bought 15 postcards during 3 days of vacation. after 4 days of va…
20 postcards
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aisha knit a total of 12 centimeters of scarf over 3 nights. how many n…
4 nights
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ayana learned a total of 6 appetizer recipes over the course of 3 weeks…
18 appetizer recipes
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chapter 2 - target practice file home insert share page layout formulas…
## Corrected Cut-Offs: | Metric | Ping Pong | Crumpled Paper | |--------------|-----------|----------------| | IQR-Low | -8 | -3 | | IQR-High | 8 | 5 | | SD-Low | -4.7159 | -1.769…
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practice: ratios and ratio tablescalories 20 □ 10 90miles $\frac{1}{6}$…
The completed ratio table and equivalent ratios are: Calories: $80$; Miles: $\frac{1}{12}$, $\frac{3}{4}$ Equivalent ratios: $20:\frac{1}{6}$, $80:\frac{2}{3}$, $10:\frac{1}{12}$,…
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11. caleb paid $4.50 for 12 bagels. describe a unit price for bagels th…
Any unit price greater than $0.375 per bagel, for example, $0.40 per bagel (or $0.50 per bagel, $0.38 per bagel, etc.) is a valid answer.
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2 check my work wachesaw manufacturing incorporated produced the follow…
a. 4 b. 1.5 c. 25
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wachesaw manufacturing incorporated produced the following number of un…
a. 4 b. 1.5
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bridgette read a total of 12 books over 2 months. after belonging to th…
18 books
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akira spent 6 minutes on the phone while routing 2 phone calls. in all,…
3 phone calls
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all year 3. marli gets to choose one sweet treat and one salty treat fr…
$\frac{1}{9}$ --- ### Problem 5
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jackie took a total of 8 quizzes over the course of 2 weeks. after atte…
12 quizzes
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the equivalent ratios are $20: \\frac{1}{6}$, $\\square:\\frac{2}{3}$ ,…
The missing number is $\boldsymbol{80}$
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lesson 18 | session 2 3 nodin makes soap sculptures of sea turtles. eac…
1. Number of sea turtles: 8 2. Value of $k$: $-18$ 3. Cost of each postcard: $\$0.70$
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dillon walked a total of 6 kilometers by making 3 trips to school. how …
10 trips
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two thousand one hundred frequent business travelers were asked which m…
| City | Frequency | Relative Frequency | |---------------|-----------|--------------------| | Indianapolis | 115 | 0.055 | | Saint Louis | 400 | 0.190 | | Chicago | 1365 | 0.650 …
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however, other researchers in this field have questioned these findings…
1. difficult but beneficial 2. Some researchers 3. strengthen memory 4. new experiences, relationships, and opportunities
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practice: ratios and ratio tables6. find the missing values in the rati…
### Completed Ratio Table: | Meters | 8 | 4 | 6 | 10 | |--------|---|---|---|----| | Minutes | $\frac{1}{3}$ | $\frac{1}{6}$ | $\frac{1}{4}$ | $\frac{5}{12}$ | ### Equivalent Rati…
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however, other researchers in this field have questioned these findings…
1. difficult but beneficial 2. Some researchers 3. strengthen memory 4. new experiences, relationships, and opportunities
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soon after lincolns election, several southern states decided to secede…
The state withdraws from the country.
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10. the houck family and roberts family took trains for their family va…
The Roberts family's train is traveling faster, by 1 mile per hour.
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summarizing: informational text — quiz — level h this diagram compares …
Similar experiments have produced different results, so more are needed to link bilingualism and brain function.
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13. -/1 points find all the zeros of the function. when there is an ext…
$x=4, \frac{1}{3}+i, \frac{1}{3}-i$ --- ### Second Function: $g(x) = x^5 - 8x^4 + 30x^3 - 68x^2 + 88x - 48$
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today 2. what is the probability of flipping three coins one time and e…
1. The probability of flipping three tails is $\frac{1}{8}$ 2. The probability of spinning a 5 and rolling a 5 is $\frac{1}{36}$
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2. what is the probability of flipping three coins one time and each co…
2. $\frac{1}{8}$ 4. $\frac{1}{36}$
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select all that apply which three of the following are not proper and e…
- Use samples that represent only a desired part of a population. - Report only those statistics that support his conclusions. - Remove outliers that bias the data too far in one …
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multiple choice question what level of data is represented by the ages …
Ratio
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true or false question statistics knowledge is necessary to successfull…
True
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multiple choice question which of the following best describes interval…
The distance between values is a known unit of measure.
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multiple choice question which of the following best describes the role…
C. The statistician should strive to present analysis with clarity, honesty, and integrity.