According to a recent study, 22.6% of adults are smokers. A random sample of 300 adults...

According to a recent study, 22.6% of adults are smokers. A random sample of 300 adults is obtained. Describe the sampling distribution of the sample proportion of adults who smoke. In a random sample of 300 adults, what is the probability that at least 50 are smokers? Would it be unusual if a random sample of 300 adults resulted in 17% or less being smokers?

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orchestra answered 2 years ago

A researcher claims that 19% of US adults are smokers. In a random sample of 250...

A researcher claims that 19% of US adults are smokers. In a random sample of 250 US adults 55 were found to be smokers. Use a 0.05 significance level to test the researcher’s claim. please show step by step details

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According to a recent study, 10 % of adult smokers started smoking before 21 years old....

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In a random sample of 200 adults and 300 teens who watched a certain television show,...

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In a recent survey conducted, a random sample of adults 18 years of age or older...

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in a random sample of 500 people aged 20-24, 110 were smokers. in a random sample...

in a random sample of 500 people aged 20-24, 110 were smokers. in a random sample of 450 people aged 25-29, 65 were smokers. test the claim that the proprtion of smokers age 20-24 is higher than the proportion of smokers age 25-29. use a significance level of 0.01. please show work!

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