Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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use the image to answer the question. letitia tells her son, evan, that…
Yellow: \(\frac{3}{10}\), Green: \(\frac{1}{5}\), Purple: \(\frac{1}{10}\), Pink: \(\frac{2}{5}\)
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a frequency distribution table using data this list of 16 random number…
| Class | Frequency | Rel.Freq | | ---- | ---- | ---- | | 20 - 29 | 3 | 0.1875 | | 30 - 39 | 4 | 0.2500 | | 40 - 49 | 3 | 0.1875 | | 50 - 59 | 6 | 0.3750 |
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based on the data, what is the amount of time cadence will most likely …
4-6 minutes
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classify each of the sampling procedures below. sampling procedure a re…
1. Simple - random sampling 2. Systematic sampling 3. Stratified sampling 4. Cluster sampling
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bag of apples average apple weight (lbs) 1 0.9 2 1.0 3 0.8 4 1.2 5 0.9 …
0.8 lb and 1.2 lbs.
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measures of dispersion ten friends kept track of how many times they se…
Range: 15 Sample standard deviation: 5.53
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ice cream consumption vs. temperature what conclusion can you draw base…
There is a positive correlation between temperature and ice - cream consumption per person.
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which of the following random variables are continuous variables and wh…
a) discrete b) continuous c) discrete d) discrete e) continuous
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interpreting bar graphs the bar graph above shows the number of compute…
How many computers did they sell on Thursday? 10 How many computers did they sell in total over the four days? 28 What percent of the total number of computers sold were sold on T…
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wayne gretzky, a retired professional hockey player, played 20 seasons …
a. (Since no data is given, we can't give exact values for \(Q_1,Q_2,Q_3\)). Interpretation of quartiles: B. b. (Since no data is given, we can't give an exact value for \(IQR\)).…
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identify the histogram for the frequency distribution below. | data | f…
By comparing the frequencies in the table with the heights of the bars in each histogram option, we can identify the correct histogram. Without the option - specific naming, we de…
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the graph of a uniform distribution is shaped like a pyramid an exponen…
C. a straight line
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statistics were gathered on the number of homicides committed with guns…
First blank: time - series; Second blank: a downward trend
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in this problem, you will use desmos to compute a few statistics. • ope…
Mean: 63.6 Median: 63.5
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part 1: getting ready to write an expository paragraph that includes st…
No specific answer is required as the task is to underline well - written sections in the given paragraph.
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tia performed an experiment in which she flipped a coin 100 times. the …
The number 100 represents the total number of trials in the experiment. 49/100 = 49%. The 49% represents the experimental probability of the coin landing heads up.
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determine whether the variable given is qualitative, quantitative - dis…
qualitative since this variable would yield categories
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match the graph to the description that best fits. use each only once. …
a. Bimodal b. Skewed right c. Skewed left d. Symmetric
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in this problem, you will use desmos to compute a few statistics. • ope…
62.575
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in this problem, you will use desmos to compute a few statistics. • ope…
Part 1: $62.385$ Part 2: $63.75$ Part 3: $63.1$ Part 4: The distribution will probably be skewed to the left.
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analyze first names 1. explain what does kofis name mean? 2. vocabulary…
1. Kofi significa nacido el viernes. 2. Mis amigos se llaman Daniela y Marilyn. Daniela tiene un nombre único.
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the data set represents the number of errors on a typing test. 5 6 8 8 …
a. Median: 9. Half of the people taking the typing test made 9 or fewer errors, and half made 9 or more errors. b. IQR: 2
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in this problem, you will use desmos to compute a few statistics. • ope…
$63.1$
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which of the dot plots shows a symmetric distribution? a. b. c. d.
B.
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match the name of the sampling method descriptions given. situations - …
1. a. Stratified 2. e. Simple Random 3. d. Systematic 4. c. Cluster 5. b. Convenience
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in this problem, you will use desmos to compute a few statistics. • ope…
Mean: \(62.385\) Median: \(63.75\)
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student mean word length 1 7.1 2 4.5 3 6.9 4 5.2 5 5.0 6 4.7 7 6.1 8 4.…
Range of average word lengths: 2.6 Variation between sample means: small
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the number of people who survived the titanic based on class and gender…
a) $0.314$ b) $0.307$ c) $0.413$ d) $0.127$ e) $0.494$
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in this problem, you will use desmos to compute a few statistics. • ope…
62.385
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in this problem, you will use desmos to compute a few statistics. • ope…
The distribution will probably be skewed to the right.
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for the sample data shown, answer the questions. round to 2 decimal pla…
Mean: $16.61$ Median: $19.45$ Sample standard deviation: $7.74$
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d) what is the probability that a survivor was a male and in the 3rd cl…
d) Without data, unable to provide a numerical answer. e) Without data, unable to provide a numerical answer.
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the number of people who survived the titanic based on class and gender…
a) $0.314$ b) $0.307$ c) $0.413$
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favorite sport | |basketball|football|soccer|baseball|other/hate sports…
$22.5\%$
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in this problem, you will use desmos to compute a few statistics. • ope…
The distribution will probably be skewed to the left.
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4. listed below are sorted duration times (seconds) of eruptions of the…
a) The problem encountered when rounding the class - width calculated as above is that the upper - class limit of the last class will be greater than the maximum value in the data…
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movie genre superhero comedy drama 6th grade 11 18 5 7th grade 12 19 12…
10
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grocery options | | store | online | total | |--|--|--|--| | women | 20…
11
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consider the below normal curves. determine which normal curve has the …
the means are equal blue curve (dashed curve)
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pets survey | | pets | no pets | total | | ---- | ---- | ---- | ---- | …
21
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in this problem, you will use desmos to compute a few statistics. open …
64.05
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screen time | | above | below | |--|--|--| | less than 4 hours | 9 | 6 …
37
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in this problem, you will use desmos to compute a few statistics. • ope…
$63.615$
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consider the following sample data, which represent weights of sea muss…
2.3
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question 2 2 pts vocabulary check: previewing the characters when you r…
A. Brave and courageous
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consider the following sample data, which represent weights of sea muss…
$2.3$
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in a large population, 66% of the people have been vaccinated. if 5 peo…
$0.9955$
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suppose that a rap group called rg2 has released its first cd with live…
D. The recording label should expand the production and distribution of RG2's first CD
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5. the box plot represents the distribution of speeds, in miles per hou…
a. The smallest value is 4 miles per hour. It is the speed of the slowest car among the 100 cars. b. The largest value is 48 miles per hour. It is the speed of the fastest car amo…
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consider the following sample data, which represent weights of sea muss…
$2.23$
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karen took three samples from a population of students to measure their…
Sample 1: 6 Sample 2: 13 Sample 3: 1
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consider the histogram shown below. determine whether the mean is less …
The mean is greater than the median since the distribution is skewed to the right.
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2. the dot plot displays the number of bushes in the yards for houses i…
8
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consider the following sample data, which represent weights of sea muss…
Part 1 of 5: 2.3 Part 2 of 5: 2.3 Part 3 of 5: 2.3
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1. select all the statistical questions. a. what is the typical amount …
A. What is the typical amount of rainfall for the month of June in the Galapagos Islands? D. How many songs does the class usually listen to each day? G. How long does it typicall…
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consider the following sample data, which represent weights of sea muss…
2.35
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use the appropriate formulas and methods to answer the following questi…
$2.3$
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determine what the key terms refer to in the following survey. to deter…
Sample: b. The 29 Oxnard College students who were surveyed Statistic: c. The average number of classes of those 29 students in the sample is 3 Parameter: a. The average number of…
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2.5 points monotheism means that a only one god is worshiped. b two or …
A. only one god is worshiped.
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text messages sent what is the mean of this population? the sum of all …
15
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consider the following sample data, which represent weights of sea muss…
Part 1: $2.04$ Part 2: $2.2$ Part 3: $2.2$ Part 4: $2.2$ Part 5: The distribution will probably be skewed to the left.
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on a recent biology quiz, the class mean was 22 with a standard deviati…
a. 2.5000 b. 1.6667 c. Biology quiz d. 16.364 e. 6.585 f. Biology quiz
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consider the following sample data, which represent weights of sea muss…
$2.2$
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consider the following sample data, which represent weights of sea muss…
Mean: $2.13$ Mode: $2.2$
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in the muslim faith, the word \allah\ means a god. b unity. c praise. d…
A. God
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consider the following sample data, which represent weights of sea muss…
$2.04$
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170 people are asked how many siblings they have? the (incomplete) resu…
| # of Siblings | Frequency | Relative Frequency | Cumulative Frequency | | ---- | ---- | ---- | ---- | | 0 | 32 | 0.1882 | 32 | | 1 | 39 | 0.2294 | 71 | | 2 | 37 | 0.2176 | 108 |…
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consider the following sample data, which represent weights of sea muss…
Part 1: 2.2 Part 2: 2.25 Part 3: 2.3 Part 4: 2 Part 5: The distribution will probably be skewed to the left.
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consider the following sample data, which represent weights of sea muss…
Part 1: 2.15 Part 2: 2.2 Part 4: 2
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the deaths attributed to uv radiation have a mean of 168.4 with a stand…
588 deaths would be unusual since it is more than two standard deviations from the mean.
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question 24 2.5 points in arabic, the word jihad means a struggle. b pi…
A. struggle
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which of the following is a true statement about self - interest as use…
A. Any action can be based on self - interest if the person has some reason for the action
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question 5 given a set of data that is skewed - left, there is at least…
88.9
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consider the following sample data, which represent weights of sea muss…
$2.095$
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consider the following sample data, which represent weights of sea muss…
Part 1: $2.085$ Part 2: $2.2$ Part 3: $2.1$ Part 4: $2.15$ Part 5: The distribution will probably be skewed to the left.
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a group of 20 registered voters were polled and asked what party they b…
| Value | Frequency | Relative Frequency | | ---- | ---- | ---- | | R | 6 | 0.3 | | D | 8 | 0.4 | | G | 2 | 0.1 | | I | 4 | 0.2 |
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consider the following sample data, which represent weights of sea muss…
$2.15$
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consider the following sample data, which represent weights of sea muss…
Mean: \(2.085\) Median: \(2.2\) Mode: \(2.1\)
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a survey was given to 84 students at a local high school, asking how ma…
# Explanation: ## Step1: Determine x - axis and y - axis The x - axis will represent the time intervals (minutes) and the y - axis will represent the number of students (frequency…
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here are the shopping times (in minutes) for each of fifteen shoppers a…
| Shopping times (in minutes) | Frequency | | ---- | ---- | | 18 to 22 | 4 | | 23 to 27 | 3 | | 28 to 32 | 3 | | 33 to 37 | 5 | For part (b), to construct the histogram: - On the …
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consider the following sample data, which represent weights of sea muss…
$2.085$
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consider the following sample data, which represent weights walnuts in …
Part 5 of 6: The distribution will probably be skewed to the right. Part 6 of 6: The mean would get larger. The median would not change.
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a group of 20 registered voters were polled and asked what party they b…
| Value | Frequency | Relative Frequency | | ---- | ---- | ---- | | R | 5 | 0.25 | | D | 5 | 0.25 | | G | 1 | 0.05 | | I | 9 | 0.45 |
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chapter 1-2 test 30 points possible answered: 3/16 question 4 calculate…
$24.85$
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consider the following sample data, which represent weights walnuts in …
The distribution will probably be skewed to the right.
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consider the following sample data, which represent weights walnuts in …
$17.05$
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suppose babies born after a gestation period of 32 to 35 weeks have a m…
B. The baby born in week 41 weighs relatively more since its z - score, 0.34, is larger than the z - score of 0.21 for the baby born in week 32.
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the population of old town is 130,000. one hundred of the residents wer…
The residents of Old Town represent the entire population. The 100 residents surveyed represent the sample.
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consider the following sample data, which represent weights walnuts in …
14.4
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consider the following sample data, which represent weights walnuts in …
$15.9$
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basic measures of center -2 score: 11.88/23 answered: 1/4 progress save…
$15.955$
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the selling prices for homes in a certain community are approximately n…
(a) $68$ (b) $2.5$ (c) $16$ (d) $83.85$
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review which one of the economic goals do you think is the most importa…
Equity. It is important because it promotes fair distribution of economic benefits, reduces social disparities, and fosters social stability and justice.
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the test scores of ms. jacksons 105 students are summarized in the tabl…
A frequency histogram with x - axis labeled "Test Score" (with intervals 50 - 59, 60 - 69, 70 - 79, 80 - 89, 90 - 99), y - axis labeled "Number of Students" (with scale 0 - 55 in …
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question 25 based on the boxplot above, identify the 5 number summary. …
7, 8, 9, 14, 18
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a teacher put all her students quiz scores up on the dot plot below. qu…
40
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the graph below represents the result of a survey in which a number of …
10
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question 25 based on the boxplot above, identify the 5 number summary. …
6, 8, 10, 12, 18
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the students in a class collected data on the number of minutes some of…
0.5
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a company produces hammers, screwdrivers, utility knives and wrenches. …
Hammers: 396 Screwdrivers: 1650 Utility knives: 330 Wrenches: 924