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Chapter 1: Q2-6BSC (page 1)
Identify whether the given value is a statistic or a parameter.
CHIS A recent California Health Interview Survey (CHIS) included 2799 adolescent residents of California.
The number of adolescents living in California selected for the survey equal to 2799 represents a statistic.
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Identify whether the given value is a statistic or a parameter.
Birth Weight In a study of 400 babies born at four different hospitals in New York State, it was found that the average (mean) weight at birth was 3152.0 grams.
In Exercises 29鈥�36, answer the given questions, which are related to percentages.
Marriage Proposals In a survey conducted by TheKnot.com, 1165 engaged or married women were asked about the importance of a bended knee when making a marriage proposal. Among the 1165 respondents, 48% said that the bended knee was essential.
a. What is the exact value that is 48% of 1165 survey respondents?
b. Could the result from part (a) be the actual number of survey subjects who said that a bended knee is essential? Why or why not?
c. What is the actual number of survey respondents saying that the bended knee is essential?
d. Among the 1165 respondents, 93 said that a bended knee is corny and outdated. What percentage of respondents said that a bended knee is corny and outdated?
Determine whether the sampling method appears to be sound or is flawed.
Nuclear Power Plants. In a survey of 1368 subjects, the following question was posted on the USA Today website: 鈥淚n your view, are nuclear plants safe?鈥� The survey subjects were Internet users who chose to respond to the question posted on the electronic edition of USA Today.
In Exercises 29鈥�36, answer the given questions, which are related to percentages.
Marriage Proposals In a survey conducted by TheKnot.com, 1165 engaged or married women were asked about the importance of a bended knee when making a marriage proposal. Among the 1165 respondents, 48% said that the bended knee was essential.
a. What is the exact value that is 48% of 1165 survey respondents?
b. Could the result from part (a) be the actual number of survey subjects who said that a bended knee is essential? Why or why not?
c. What is the actual number of survey respondents saying that the bended knee is essential?
d. Among the 1165 respondents, 93 said that a bended knee is corny and outdated. What percentage of respondents said that a bended knee is corny and outdated?
In Exercises 29鈥�36, answer the given questions, which are related to percentages.
Workplace Attire In a survey conducted by Opinion Research Corporation, 1000 adults were asked to identify 鈥渨hat is inappropriate in the workplace.鈥� Of the 1000 subjects, 70% said that miniskirts were not appropriate in the workplace.
a. What is 70% of 1000?
b. Among the 1000 respondents, 550 said that shorts are unacceptable in the workplace. What percentage of respondents said that shorts are unacceptable in the workplace?
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