Question: A dental student is conducting a study on the number of people who visit their dentist regularly. Of the 520people surveyed, 312indicated that they had visited their dentist within the past year. Find the population proportion, as well as the mean and standard deviation of the sampling distribution for samples of size n=60.
Question: A credit card company surveys its customers to determine the number of times they usethe card each month. There are 5,500customers and 2,756indicate that they use the card at least twice each month. Find the population proportion, as well as the mean and standard deviation of the sampling distribution for samples of size n=70customers.
Question: A marketing team is targeting people who might buy a hybrid car. In their city, with a population of 30,000people, 3,170people either drive a hybrid car or have indicated on a recent survey that they would be interested in driving one. Find the population proportion, as well as the mean and standard deviation of the sampling distribution for samples of size n=121.
Question: From recent census data, it is discovered that the proportion of the adults in the United States who are first generation Americans is 14%. For a random sample of size 500, what is standard deviation for the sampling distribution of the sample proportions, rounded to three decimal places?
Instituition / Term
Term
Summer 2021
Institution
MATH 225N Statistical Reasoning for the Health Sciences
