Mathematics

Mathematics, 05.07.2019 05:00, sandersmakaylaovq5vu

Arestaurant has reserved seats for smokers and non smokers in a 1: 12 ratio if there are only 10 seats for smokers how many are reserved for non smokers

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Health, 06.07.2019 03:00, mutoni55

Which is a true statement about teens who smoke a first cigarette? a. 12% will become regular smokers. b. 4% will become regular smokers. c. 42% will become regular smokers. d. 70% will become regular smokers.

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Mathematics, 18.09.2019 03:00, justinjay0000

In a certain clinical study, 15% of participants were classified as heavy smokers, 25% as light-smokers, and the rest as non-smokers. at the end of the study, the death rates of the heavy and light smokers were 5 and 3 times that of non-smokers, respectively. what is the probability that a randomly selected participant who died by the end of the study was a non-smoker?

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Mathematics, 01.10.2019 03:10, bnnn

The centers for disease control reported the percentage of people 18 years of age and older who smoke (cdc website, december 14, 2014). suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .30. a. how large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02 (to the nearest whole number)? use 95% confidence. b. assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. what is the point estimate of the proportion of smokers in the population (to 4 decimals)? c. what is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)? ( , )

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Mathematics, 29.10.2019 23:31, darlinsanchez08com

The centers for disease control reported the percentage of people 18 years of age and older who smoke (cdc website, december 14, 2014). suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .28. a. how large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02 (to the nearest whole number)? use 95% confidence. b. assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. what is the point estimate of the proportion of smokers in the population (to 4 decimals)? c. what is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)? ( , )

Answers: 2

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