Question

population of 5000 subjects, 600 posses certain characteristic; sample of 120 subjects selected from this population contains 18 subjects who possess the same characteristic_ What are the values of the population and sample proportions? 10. In population of 9500 subjects, 75% have certain characteristic sample of 400 subjects selected from this population, 78% possess the same characteristic_ How many subjects in the population and sample, respectively; possess this characteristic? 11. According to the U.S_ Department of Health and Human Services, 44% of Americans take at least one prescription drug regularly: Assume that this percentage true for the current population Americans , and let p-hat be the proportion Americans who take at least one prescription drug regularly in sample of 900. Find the probability that the value of p-hat is between 0.43 and 0.46 greater than 0.48 12. The amounts of telephone bills for all households in a large city have a distribution that is skewed to the right with a mean of S96 and standard deviation of S27 _ Let x-bar be the mean amount of telephone bills for a random sample of 90 households selected from this city: Calculate the mean and standard deviation of X-bar and describe the shape of its sampling distribution_

          population of 5000 subjects, 600 posses certain characteristic; sample of 120 subjects selected   from this   population  contains   18  subjects who possess the same characteristic_ What are the values of the population and sample proportions?
10. In population of 9500 subjects, 75% have certain characteristic sample of 400 subjects selected from this population, 78% possess the same characteristic_ How many subjects in the population and sample, respectively; possess this characteristic?
11. According to the U.S_ Department of Health and Human Services, 44% of Americans take at least one prescription drug   regularly: Assume that this percentage true for the current   population Americans , and let p-hat be the proportion Americans who take at least one prescription drug regularly in sample of 900. Find the probability that the value of p-hat is between 0.43 and 0.46 greater than 0.48
12. The amounts of telephone bills for all households in a large city have a distribution that is skewed to the right with a mean of S96 and standard deviation of S27 _ Let x-bar be the mean amount of telephone bills for a random sample of 90 households selected from this city: Calculate the mean and standard deviation of X-bar and describe the shape   of its sampling distribution_

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