統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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a news article reports the results of a survey of columbus residents wh…
The sample statistic obtained from surveyed residents.
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a farm records the average weight of a piglet for the first several wee…
16.3
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a coffee shop tracks the number of cups of coffee sold over four weeks.…
39
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3 multiple choice 1 point which of these correlations represents causat…
The more a person exercises, the more calories they burn.
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a study of a citys emergency response data finds a strong positive corr…
There is correlation but not causation between the number of firefighters and the damage amount.
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a data set includes 103 body temperatures of healthy adult humans havin…
\(98.727^{\circ}F<\mu<99.073^{\circ}F\) Since \(98.6^{\circ}F\) is not in the confidence interval \( (98.727,99.073)\), the sample suggests that \(98.6^{\circ}F\) is not a reasona…
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review the passage. the metaphor is shown in bold. dallben, master of c…
It indicates Dallben's beard is big and bushy.
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a food safety guideline is that the mercury in fish should be below 1 p…
\(0.277\) ppm \(<\mu<1.151\) ppm
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archeologists have studied sizes of egyptian skulls in an attempt to de…
\(126.34\) mm \(<\mu<141.02\) mm
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review the passage. the simile is shown in bold. if you could slice dee…
It illustrates that the earth's crust is fragmented.
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review the passage. grandson: a book? grandfather: thats right,... gran…
It highlights the grandson's lack of enthusiasm.
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a data set includes 103 body temperatures of healthy adult humans havin…
\(98.735^{\circ}F<\mu<99.065^{\circ}F\)
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read the passage. the personification is shown in bold. the driver agai…
It creates a suspenseful and scary tone.
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a data set includes 103 body temperatures of healthy adult humans havin…
\(98.732^{\circ}F<\mu<99.068^{\circ}F\)
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a data set includes 103 body temperatures of healthy adult humans havin…
\(98.735^{\circ}F<\mu<99.065^{\circ}F\)
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review the passage. the hyperbole is shown in bold. nations are possess…
It stresses the value of thoughtfulness.
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here are summary statistics for the weights of pepsi in randomly select…
D. One has 99% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of Pepsi in a can.
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review the passage. the simile is shown in bold. oh! but he was a tight…
It illustrates Scrooge's unfriendly personality.
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here are summary statistics for randomly selected weights of newbom gir…
C. One has 90% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls.
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here are summary statistics for randomly selected weights of newborn gi…
\(3016.9\) g\(<\mu<3405.3\) g
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read this excerpt from \a visit from the goon squad\. at last he found …
Does technology help or hinder meaningful communication?
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3. gage skated 1 hr 15 min each day for 5 days and 1 hr 30 min each day…
Since \(120\) minutes \( = 2\) hours, the answer is E. 2 hr.
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which excerpt from \harrison bergeron\ best illustrates irony? hazel ha…
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 graph contains individual supply curves for the only two firms in a…
A third firm would mean market supply increases.
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the belief that decision making should be easy might also impede our ab…
C. Wise people take time to make decisions.
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1939 - 1945 world war ii four freedoms freedom of speech freedom of wor…
- **Who was FDR trying to persuade with this speech?** Americans and opponents in Congress. - **The posters were designed by artist Norman Rockwell in 1943. What do you notice abo…
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16. five students ranging in age from 19 to 24 took part in a survey at…
A. \(3.4\)
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suppose we want to choose 3 colors, without replacement, from the 4 col…
(a) \(24\) (b) \(4\)
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why was carnegie steel considered a vertical monopoly? the company cont…
The company controlled every step of steel production, from raw materials to distribution.
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two athletes are training for a cycling race. each athlete recorded the…
(a) Athlete A (b) Athlete B (c) Athlete B (d) Athlete B
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suppose the percent of households y with internet subscription from the…
a. \((8,91.56)\) b. In 2018, approximately \(91.56\%\) of households had an Internet subscription. c. \(102.66\) d. One issue could be that the linear model assumes a constant rat…
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jaylen is the manager at gerties groceries. yesterday, he surveyed some…
\(18\)
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two science classes with the same number of students took a final exam.…
(a) Class A (b) Class A (c) Class A (d) Class A
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based on the scatter plot below, which is a better prediction for $x$ w…
\(59\)
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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which graph shows the line of best fit for the data?
The first graph (top - left graph) shows the line of best fit for the data.
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the word facility contains the root fac. what does the root fac mean? s…
do or make
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the word congregate contains the root greg. what does the root greg mea…
group
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question a random sample of students was surveyed and asked to list the…
\(57\%\)
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the two scatter plots below show the same data set. choose the scatter …
The second scatter - plot.
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assume that a randomly selected subject is given a bone density test. t…
The probability that a given score is less than \(-0.57\) is \(0.2843\). The correct graph is the one (assuming in the options) that has the shaded region to the left of \(z =-0.5…
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suppose that the heart beat per minute (bpm) of adult males has a norma…
A heart rate with a bpm more than \(40.9\) and less than \(95.0\) are not significant.
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understanding contextual meanings read the following sentences. if the …
1. Incorrect. New sentence: The company expedited the delivery of the package. 2. C 3. C 4. C 5. Incorrect. New sentence: The spurious claim was quickly debunked. 6. Incorrect. Ne…
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how does wilde develop lord henrys character in this excerpt? choose 1 …
B. Wilde uses Lord Henry's clever statements to reveal deeper insights about life, suggesting that beneath Lord Henry’s casual remarks lies a profound desire to understand life’s …
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compound interest graph the graph shows a compound interest account. wh…
\(\$50\)
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multiple choice question components are projections of a vector paralle…
perpendicular
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the word diminish contains the root min. what does the root min mean? b…
small
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the following text is from booth tarkingtons 1921 novel alice adams. mr…
D. Priced
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the word chronic contains the root chron. what does the root chron mean…
time
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the word compulsion contains the root puls. what does the root puls mea…
drive or push
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the word juncture contains the root junc. what does the root junc mean?…
join
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the word diction contains the root dict. what does the root dict mean? …
say or declare
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question a random sample of people were surveyed on their favorite spor…
\(19.4\%\)
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the word decagon contains the root dec. what does the root dec mean? on…
C. ten
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the word advocate contains the root voc. what does the root voc mean? c…
call or speak
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suppose we want to choose 2 objects, without replacement, from the 3 ob…
(a) \(6\) (b) \(3\)
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the word centimeter contains the root cent. what does the root cent mea…
one hundred
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the word multiply contains the root multi. what does the root multi mea…
C. many
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the word missile contains the root miss. what does the root miss mean? …
send
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let not x be the event that the wheel stops on a slice that is not whit…
\(1 - P(\text{not }X)\) is the same as \(P(X)\)
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the word evacuate contains the root vac. what does the root vac mean? s…
empty
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13. the coaches recorded the number of athletes that are participating …
\(30\%\)
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a wheel has 10 equally sized slices numbered from 1 to 10. some are gre…
- For event \(X\): Check the boxes for \(2\), \(4\), \(6\); \(P(X)=\frac{3}{10}\) - For event \(not\ X\): Check the boxes for \(1\), \(3\), \(5\), \(7\), \(8\), \(9\), \(10\); \(P…
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the word millimeter contains the root mille. what does the root mille m…
one thousand
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the word belligerent contains the root bel. what does the root bel mean…
war
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a dartboard has 8 equally sized slices numbered from 1 to 8. some are g…
- \( P(X)=\frac{7}{8} \), and for event \( X \), the checked outcomes are \( 1\), \(2\), \(3\), \(4\), \(6\), \(7\), \(8\). - \( P(\text{not }X)=\frac{1}{8} \), and for event \(\t…
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let not x be the event that the selected ball is not white, and let ( p…
\(1 - P(X)\) is the same as \(P(\text{not }X)\)
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five balls numbered from 1 to 5 are placed into a bag. some are grey an…
- For event \(X\): Check the boxes for \(1\) and \(3\), \(P(X)=\frac{2}{5}\) - For event \(\text{not }X\): Check the boxes for \(2\), \(4\), and \(5\), \(P(\text{not }X)=\frac{3}{…
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steel rods are manufactured with a mean length of 22 centimeter (cm). b…
(a) \(0.0478\) (b) \(0.0197\) (c) \(99\)
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the time required for an automotive center to complete an oil change se…
a. \(34.46\%\) b. \(22.7\) minutes
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the time required for an automotive center to complete an oil change se…
(a) \(37.07\%\) (b) \(25\) minutes
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question a random sample of people were surveyed on their favorite spor…
5
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question a survey asked a random sample students if they estimated they…
\(53.7\%\)
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4. sociologists approach their research in different ways. in this less…
Interpretive sociology: Focuses on subjective meanings, uses in - depth interviews/participant observation. E.g., studying club membership motivations. Critical sociology: Aims to…
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the graph shows the number of possible passengers for a given number of…
a. Each roller - coaster car holds \(2\) passengers. b. The equation \(y = 2x\) means that the number of passengers \(y\) is twice the number of roller - coaster cars \(x\). For e…
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what does the graph show about the distribution of income during the la…
- Most people were in the low income bracket and only a few earned large incomes.
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a sample mean, sample size, and sample standard deviation are provided …
\(-2.77\)
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a sample mean, sample size, and sample standard deviation are provided …
The P - value is \(0.002\)
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a sample mean, sample size, and sample standard deviation are provided …
\(3.14\)
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a sample mean, sample size, and sample standard deviation are provided …
\(-2.42\)
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a sample mean, sample size, and sample standard deviation are provided …
We reject the null hypothesis \(H_0\) at the \(5\%\) significance level.
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a sample mean, sample size, and sample standard deviation are provided …
\(-1.61\)
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an online retailer employs 1,300 employees. one of their competitors wo…
B. \(H_0:\mu\geq36;H_1:\mu < 36\)
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question 2 a sample is a subset of the population of interest. true fal…
True
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this table shows peoples responses for: \i would buy this product.\ of …
\(39\%\)
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this table shows peoples responses for: \i would buy this product.\ of …
\(40\%\)
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this table shows peoples responses for: \i would buy this product.\ of …
\(10\)
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this table shows peoples responses for: \i would buy this product.\ of …
\(34\%\)
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this table shows peoples responses for: \i would buy this product.\ of …
\(66\%\)
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this table shows peoples responses for: \i would buy this product.\ of …
\(8\%\)
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suppose the percent of households y with internet subscription from the…
The ordered pair is \((8,91.56)\)
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games what popular game was named after a swahili word meaning build? c…
Jenga
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suppose the percent of households y with internet subscription from the…
In 2020, approximately \(94\%\) of households had an Internet subscription.
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suppose the percent of households y with internet subscription from the…
94
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suppose the percent of households y with internet subscription from the…
The ordered pair is \((8,89.9)\)
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the number of people y (in millions) carrying a drivers license from th…
a. \((10,173)\) b. The ordered pair \((10,173)\) means that 10 years after 2010 (i.e., in 2020), the number of people (in millions) carrying a driver's license is 173. c. First, f…
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trail running is one of the few sports that has been consistently incre…
a. The ordered pair is \((7,6.1)\) b. When \(x = 7\) (7 years after 2010), substituting into \(y = 0.3x+4\) gives \(y = 6.1\). This means that 6.1 million people participated in t…
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graduated licensing is meant to ease teens into driving so that they ca…
A. True
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assume that adults have iq scores that are normally distributed with a …
\(91.7\)
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is this a thesis statement? the government should subsidize college for…
yes