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Question: We are interested in the proportion of UoI students who smoke. A random sample of n = 400 UoI students is taken. The proportion of smokers in this random sample is 0.25.
Calculate a 95 percent confidence interval for the unknown proportion of smokers among the UoI student population.
he probability that a pumpkin seed will germinate is 70%. A gardener plants the pumpkins in batches of 12. What is the mean of the distribution? What is the variance of the distribution?
What was the research question for the systematic review summarised in this Extract and what are the study factor and the primary outcome factor?
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992�2003 only. Would a fitted trend be helpful in making a predictio..
the table below contains average house prices median income average monthly rent and percentage of flats that are
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
Determine the values on the 3-sided die so that the outcome probabilities for rolling the two dice described above match exactly the outcome probablities for rolling two standard (6-sided) dice.
The CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees (n = 474) and their starting salaries.
What item/s can be deleted to improve reliability, what items should never be deleted to maintain reliability of data and how many items need to be deleted to achieve maximum reliability
Consider a large population of families with three children each. If the genders of children in any family are independent of one another, the number of male children in any family will have a binomial distribution based on three trials.
If no more than 5% of the containers are to weigh less than 15.80 oz., what must the standard deviation of the weights equal?
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