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While at my job I decided to ask 20 co-workers how often they go to the gym. Here are the results:
9 said they go to the gym four days a week.
5 said they go to the gym two days a week.
4 said they don't go to the gym at all.
2 said they go to the gym three times a week.
Using confidence interval of 95%, find the population mean.
Provide explanation.
What are the most common causes of missing data, and what difficulties do missing data cause? What can be done if data are missing?
In July of 2004, the Gallup Poll asked 1005 U.S. adults if they actively try to avoid carbohydrates in their diet. That number increased to 27% from 20% in a similar 2002 poll. Is this a statistically significant increase? Explain.
What is the correlation between the percent of teens who have used marijuana and the percent who have used other drugs?- Write a brief description of the association.
Find the probability that among 8 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
If the obtained probability in an experiment equals 0.1500, then the probability that chance alone is at work equals 0.1500. Is this statement true?
What is the probability that none of the three parents condone spanking as a regular form of punishment for their children?
Public Policy and Political Science A recent survey suggested that more than one-quarter of registered U.S. voters believe an armed revolutio.
João is 24 years old. What would we predict for the number of hours he studies per week?- Kimberly is 19 years old. What would we predict for the number of hours she studies per week?
Place the following set of numbers in ascending order. Determine the maximum and minimum values of the following set of numbers. 36/7,-1,-2/3,-5,26/9
a sample of 64 observations is selected from a normal population.the sample mean is 215 and the sample standard
Sugar packaged by a certain machine has a mean weight of 5lb and a standard deviation of 0.02 lb. For what values of c can the manufacturer of the machinery claim that the sugar packaged by this machine has a weight between 5 - c and 5 + c lb with..
a proportion of a college basketball teams season ticket holders renew their tickets for the next season. let p denote
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