Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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for parts a and b, use technology to estimate the following a) the crit…
\(3.71\)
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a group conducted a poll of 2008 likely voters just prior to an electio…
B. The margin of error suggests candidate A may receive between 44% and 50% of the popular vote and candidate B may receive between 41% and 47% of the popular vote. Because the po…
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a researcher wishes to estimate, with 90% confidence, the population pr…
\(n = 6235\) (since we round up to the nearest whole number)
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a researcher wishes to estimate, with 90% confidence, the population pr…
\(6766\)
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in a poll of 520 human resource professionals, 45.8% said that body pie…
D. The 99% confidence interval is wider than the 80% confidence interval. A confidence interval must be wider in order to be more confident that it captures the true value of the …
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in a poll of 520 human resource professionals, 45.8% said that body pie…
\(0.430<p<0.486\)
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which of the following best describes how the authors use of multiple n…
It allows the reader to witness multiple characters' views on deception.
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in a poll of 520 human resource professionals, 45.8% said that body pie…
$0.402 < p<0.514$
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in a poll of 520 human resource professionals, 45.8% said that body pie…
\(238\)
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
B. Random sampling, C. Sampling from adults 19 years of age or older
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
B. Random sampling, C. Sampling from adults 19 years of age or older
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
B. We are 95% confident the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between 0.218 and 0.272.
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
For the first question (Why is the point estimate a statistic): D. Its value is based on a specific sample. For the second question (Why is the point estimate a random variable): …
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
D. Its value is based on a specific sample.
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
\(0.245\)
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why does the theft of the tai - me represent the decline of the kiowa p…
The Tai - me represented the spiritual existence of the Kiowas.
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
The population is all adults 19 years of age or older. The variable of interest is “whether an adult 19 years of age or older brings and uses their cell phone every trip to the ba…
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ook at the text below. if there is an error with subject - verb agreeme…
The 2013 American Time Use Survey, released by the Bureau of Labor Statistics, found that 2.8 hours is the average amount of time that Americans spend watching television each day.
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
- **Sample**: B. The sample is the 1000 adults 19 years of age or older - **Population of interest**: D. The population is all adults 19 years of age or older
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in a survey conducted by a reputable marketing agency, 245 of 1000 adul…
B. The sample is the 1000 adults 19 years of age or older.
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use the sample data and confidence level given below to complete parts …
B. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.
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use the sample data and confidence level given below to complete parts …
\(0.020<p<0.028\)
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use the sample data and confidence level given below to complete parts …
$E = 0.004$
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hours dogs sleep the canadian press reported that dogs sleep on average…
$2.33$
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use the sample data and confidence level given below to complete parts …
$0.024$
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hours dogs sleep the canadian press reported that dogs sleep on average…
\(H_0:\mu = 14\), \(H_1:\mu>14\), right - tailed
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a survey of 2293 adults in a certain large country aged 18 and older co…
B. We are \(90\%\) confident the proportion of adults in the country aged 18 and older who have donated blood in the past two years is between \(0.163\) and \(0.189\)
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using the t - distribution table, find the critical value(s) for the t …
\(\pm 2.771\)
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arrange the pieces below in two ways without changing the meaning or te…
1. I developed Seto Kaiba's photographs in the school darkroom. 2. In the school darkroom, I developed Seto Kaiba's photographs.
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question 8 the story says: \i heard from addie turner that he got fired…
A. real medicine
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using the t distribution table, find the critical value(s) for the t te…
$\pm 1.782$
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question 7 which two words have opposite meanings? hint a. letters and …
B. young and old
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ghost vocabulary: context clues determine which context clues help the …
6. B. skinny arms 7. B. tease 8. C. running from 9. A. bumping into her crush 10. B. putting on lipstick
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arrange the pieces below in two ways without changing the meaning or te…
Yu Nishinoya wears those flippers to every snorkeling lesson.
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a survey of 2293 adults in a certain large country aged 18 and older co…
\(\hat{p} = 0.176\)
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ghost vocabulary: context clue determine which context clues help the r…
1. A. injuring her ankle 2. B. trotted 3. C. rude joke 4. A. nonstop 5. A. Instead of leaving
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2) it is reported that 77% of workers aged 16 and over drive to work al…
a) \(0.0006\) b) \(0.792\) c) \(0.12\)
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question 3 (1 point) listen what can you do when youre dealing with a c…
Question 3: C. Report them to the site, since cyberbullying violates policy Question 4: C. Ask whether they are modeling a lifestyle that is meaningful and attainable.
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if necessary, rearrange the pieces below so that the sentence is in the…
I buy Dio Brando's handmade stuffed animals on New Year's Eve every year.
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using the t distribution table, find the critical value(s) for the t te…
\(\pm 1.782\)
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a survey of 2293 adults in a certain large country aged 18 and older co…
\(0.176\)
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if necessary, rearrange the pieces below so that the sentence is in the…
The secret agent will notice Marik Ishtar's disguise during the meeting.
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a survey of 2093 adults in a certain large county aged 18 and older con…
\(0.197\)
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if necessary, rearrange the pieces below so that the sentence is in the…
Sans photographed the snakes at the county zoo.
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using the t distribution table, find the critical value(s) for the t te…
\(\pm 1.782\)
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using the t distribution table, find the critical value(s) for the t te…
$\pm 1.782$
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if necessary, rearrange the pieces below so that the sentence is in the…
Tetsuro Kuroo and the magician perform card tricks at all of their shows.
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if necessary, rearrange the pieces below so that the sentence is in the…
Yu Nishinoya's grandma will see the Statue of Liberty during her trip to New York.
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is the following statement about coordinate adjectives true or false?co…
false
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if necessary, rearrange the pieces below so that the sentence is in the…
I play Josuke Higashikata's CD whenever I have friends over.
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1 use context to determine the meaning of the underlined word. i was su…
1. "Sufficiently" means "enough". 2. d) considering.
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if necessary, rearrange the pieces below so that the sentence is in the…
I will buy Jotaro Kujo's comic book collection after I get my allowance.
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construct a confidence interval of the population proportion at the giv…
The upper bound of the confidence interval is $0.742$.
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construct a confidence interval of the population proportion at the giv…
$0.692$
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determine the point estimate of the population proportion, the margin o…
\(630\)
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determine the point estimate of the population proportion, the margin o…
$0.525$
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using the z table (the standard normal distribution table), find the cr…
$-1.34$
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what is the best way to punctuate the sentence? umm! thats not what i m…
First question: Umm! That's not what I meant. Second question: to show frustration
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sunni ali ber and his army conquered many territories to build the song…
He was cruel to Muslims.
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express the confidence interval ( 0.111 < p < 0.333 ) in the form ( hat…
$0.222\pm0.111$
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a magazine provided results from a poll of 1000 adults who were asked t…
D. The statement indicates that the interval \(12\%\pm4\%\) is likely to contain the true population percentage of people that prefer chocolate pie.
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in a trial of 200 patients who received 10 - mg doses of a drug daily, …
\(0.21\)
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which z - score is used in a (a) 90%, (b) 98%, and (c) 99 9% confidence…
$3.29$
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which z - score is used in a (a) 90%, (b) 98%, and (c) 99.9% confidence…
\(2.33\)
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which z - score is used in a (a) 90%, (b) 98%, and (c) 99.9% confidence…
\(1.65\)
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compute the critical value ( z_{alpha / 2} ) that corresponds to a ( 87…
\(1.51\)
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compute the critical value ( z_{alpha / 2} ) that corresponds to a 98% …
$2.33$
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if you constructed one hundred 93% confidence intervals based on one hu…
B. 93
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using the z table (the standard normal distribution table), find the cr…
$\pm 2.17$
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if a sample proportion is 0.70, which of the following could be a 90% c…
C. Lower bound \(0.61\), Upper bound \(0.79\); E. Lower bound \(0.67\), Upper bound \(0.73\)
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define each of the following (a) point estimate (b) confidence interval…
(c) A. The expected proportion of confidence intervals that will contain the parameter if a large number of different samples is obtained (d) D. A numerical distance that determin…
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define each of the following (a) point estimate (b) confidence interval…
- (b) D. An interval of numbers for an unknown parameter based on a point estimate - (c) A. The expected proportion of confidence intervals that will contain the parameter if a la…
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classify the conclusion of the hypothesis test as a type i error, a typ…
Correct decision
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define each of the following (a) point estimate (b) confidence interval…
- (a) C. The value of a statistic that estimates the value of a parameter - (b) D. An interval of numbers for an unknown parameter based on a point estimate
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define each of the following (a) point estimate (b) confidence interval…
B. The value of a statistic that estimates the value of a parameter
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given $h_{0}:\\mu = 24$, $h_{a}:\\mu\ eq24$, and $p = 0.029$. do you re…
fail to reject \( H_0 \)
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a polling agency reported that the proportion of 12th grade students wh…
A. If 100 different random samples of 90 students were obtained, \(5\) would be expected to have at least 38 students that are engaged.
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classify the hypothesis test as two - tailed, left - tailed, or right -…
Left - tailed
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choose the best description and example of the alternative hypothesis i…
A statistical hypothesis that there is a difference between a parameter and a certain value, or between two parameters. Example: \(H_1:p_1 < p_2\)
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a polling agency reported that the proportion of 12th grade students wh…
\(22.0\)
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a polling agency reported that the proportion of 12th grade students wh…
The sample size, \(n = 90\), is less than \(5\%\) of the population size, or \(0.05N = 180\)
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a polling agency reported that the proportion of 12th grade students wh…
$0.4222$
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a polling agency reported that the proportion of 12th grade students wh…
B. If 100 different random samples of 90 students were obtained, 5 would be expected to have at least 38 students that are engaged.
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for the following conjecture, state the null and alternative hypotheses…
The null hypothesis \( H_0:\mu = 88 \), the alternative hypothesis \( H_1:\mu < 88 \)
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a polling agency reported that the proportion of 12th grade students wh…
\(P(\hat{p}\geq0.422)=0.051\)
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using the t distribution table, find the critical value(s) for the t te…
\(- 2.093,2.093\)
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a polling agency reported that the proportion of 12th grade students wh…
\(\mu_{\hat{p}} = 0.34\), \(\sigma_{\hat{p}}\approx0.0499\)
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using the t - distribution table, find the critical value(s) for the t …
\(-1.341\)
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the relationship between the number of arrests per 100,000 drivers for …
a. B. In this situation the input value is the age of driver and the output value is the number of drunk - driving arrests per 100,000 drivers. b. The age group of \(25\) year - o…
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a polling agency reported that the proportion of 12th grade students wh…
\(22.0\)
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a polling agency reported that the proportion of 12th grade students wh…
The sample size, \(n = 90\), is less than \(5\%\) of the population size, or \(0.05N = 180\)
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7. a political candidate has asked you to conduct a poll to determine w…
\(188\)
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what does \pre-columbian\ mean? o before colombia became a country in s…
before European explorers and settlers arrived in the New World
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6. insurance companies are interested in knowing the population percent…
The 99% confidence interval is $(0.705,0.813)$
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a researcher studying public opinion of proposed social security change…
(a) \(20\) (b) \(4\)
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5. which of the following would result in the widest confidence interva…
A. A sample size of 30 with 99% confidence.
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4. you intend to estimate a population mean with a confidence interval.…
\(\pm1.574\)
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a researcher studying public opinion of proposed social security change…
20
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the dotplot shows the scores of participants in a solo and ensemble mus…
The mean and the median are similar
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a researcher studying public opinion of proposed social security change…
\(0\)