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12. According to the Consumer Aerosol Products Council, 25% of adults believe that CFC propellants are...
Example: According to a survey in a county, 28% of adults do not own a cell...
Example: According to a survey in a county, 28% of adults do not own a cell phone. Suppose a simple random sample of 200 adults is obtained Is the sampling distribution of normal? Why? What is the probability that in a random sample of 200 adults, more than 30% do not own a cell phone? Interpretation: If 100 random samples off 200 adults were obtained, one would expect 30% not owning a cell phone. to result in more than What...
According to a consumer survey of young adults (18-24 years of age) who shop online, 30%...
According to a consumer survey of young adults (18-24 years of age) who shop online, 30% own a mobile phone with internet access. In a random sample of 400 young adults who shoponline, let x be the number who own a mobile phone with internet access. a. Explain why x is a binomial random variable (to a reasonable degree of approximation). Choose the correct explanation below. A. The experiment consists of n identical, dependent trials, where there are only two...
According to a recent survey of households, the poll found that 48% of the adults watching...
According to a recent survey of households, the poll found that 48% of the adults watching a special event on TV enjoyed the commercials more than the event itself. Consider a random sample of nine adults who watched the special event. Complete parts a through d below. 1 (3 pts) What is the probability that less than four people enjoyed the commercials more than the event? what is the probablility that exactly six or seven people enjoyed the commericals more...
According to a survey in a country, 25% of adults do not have any credit cards....
According to a survey in a country, 25% of adults do not have any credit cards. Suppose a simple random sample of 600 adults is obtained. (a) Describe the sampling distribution of p, the sample proportion of adults who do not have a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Not normal because ns0.05N and np(1 - p) < 10. B. Approximately normal because ns0.05N and np(1 –...
According to a consumer survey of young adults (18-24 years of age) who shop online, 29%...
According to a consumer survey of young adults (18-24 years of age) who shop online, 29% own a mobile phone with internet access. In a random sample of 400 young adults who shop online, let x be the number who own a mobile phone with internet access. a. Explain why x is a binomial random variable (to a reasonable degree of approximation). Choose the correct explanation below. A. The experiment consists of n identical, dependent trials, with more than two...
The Pew Research Center found that 38.6% of adult Americans believe that marriage is now obsolete. Suppose a random samp...
The Pew Research Center found that 38.6% of adult Americans believe that marriage is now obsolete. Suppose a random sample of 550 American adults is asked whether marriage is obsolete. Describe the sampling distribution of " role="presentation">pˆ by using the " role="presentation">N(mean,sd) notation and reporting the mean and standard deviation of the sample proportion of American adults who believe that marriage is now obsolete. What is the probability that in a random sample of 550 American adults that less than...
1. According to a magazine, as of January 2018, 12% of chief executive officers were women....
1. According to a magazine, as of January 2018, 12% of chief executive officers were women. Complete parts A through D based on a random sample of 12 CEO's. a. What is the probability that one corporate officer was female? b. What is the probability that fewer than four corporate officers were female? c. What is the probability that more than two corporate officers were female? d. What are the mean and standard deviation for this distribution 2. According to...
Support that recent pol found that 50% of adults in a certain country believe that the...
Support that recent pol found that 50% of adults in a certain country believe that the overall state of moral values is poor a survey of a random sample of 15 adults in this country is conducted in which they are asked to disclose their feelings on the rate of moral values, como parts through to below Gero habet bominion Find and were the probably the exactly 10 of the surveyed to the vale of morali ispor The pray that...
(Put in the probability statements where needed) According to credit card.com, 29% of adults do not...
(Put in the probability statements where needed) According to credit card.com, 29% of adults do not own a credit card. Question 1 ..Suppose a random sample of 500 adults is asked, “Do you own a credit card?” Describe the sampling distribution of the sample proportion of adults who do not own a credit card. a) Mean (2 decimal places): b)Standard Deviation (4 decimal places): Question 2...Show that the distribution of the sample proportion is normal by performing the proper calculations...
According to a survey in a country, 10% of adults do not own a credit card....
According to a survey in a country, 10% of adults do not own a credit card. Suppose a simple random sample of 300 adults is obtained. Complete parts (a) through (d) below (a) Describe the samping distribution of the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the sampling diatribution of below. O A. Approximately normal becausens OSN and noft-p) 10 OB. Not normal because ns0.05N and npit-p)<...
Example: According to a survey in a county, 28% of adults do not own a cell phone. Suppose a simple random sample of 200 adults is obtained Is the sampling distribution of normal? Why? What is the probability that in a random sample of 200 adults, more than 30% do not own a cell phone? Interpretation: If 100 random samples off 200 adults were obtained, one would expect 30% not owning a cell phone. to result in more than What...
According to a survey in a country, 25% of adults do not have any credit cards. Suppose a simple random sample of 600 adults is obtained. (a) Describe the sampling distribution of p, the sample proportion of adults who do not have a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Not normal because ns0.05N and np(1 - p) < 10. B. Approximately normal because ns0.05N and np(1 –...
Support that recent pol found that 50% of adults in a certain country believe that the overall state of moral values is poor a survey of a random sample of 15 adults in this country is conducted in which they are asked to disclose their feelings on the rate of moral values, como parts through to below Gero habet bominion Find and were the probably the exactly 10 of the surveyed to the vale of morali ispor The pray that...
According to a survey in a country, 10% of adults do not own a credit card. Suppose a simple random sample of 300 adults is obtained. Complete parts (a) through (d) below (a) Describe the samping distribution of the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the sampling diatribution of below. O A. Approximately normal becausens OSN and noft-p) 10 OB. Not normal because ns0.05N and npit-p)<...
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