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The central university has a student population of 60000. The university is interested in determining what proportion of them is in favour of a new grading system.
Determine a sample size with confidence level of 95% that will show the true proportion of population in favour of the new system within plus and minus 0.02.
Can you please give one example of a Qualitative data and one example of a Quantitative Data that you face daily? Please explain why it is a Quantitative or Qualitative data and describe the scale of measurement.
Medical studies have shown that 10 out of 100 adults have heart disease. When a person with heart disease is given an EKG test, a 0.9 probability exists that the test will indicate the presence of heart disease.
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values. What does your p-values tell you ab..
Surface area of a cube. The formula A=6V^2/3 gives the surface area of a cube in terms of its volume V. What is the volume of a cube with surface area 12 square feet?
Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course:
For the samples summarized below, test the hypothesis that the two variances are equal, at α = 0.05
From the above function, it can be said that the expected yearly income of and find the multiple coefficient of determination
Set up probability distribution by illustrating all x values and their associated probabilities. List sample space of tossing a fair coin.
If 200 of the adults surveyed were in the age category of 24 and under and they provided a standard deviation of $14.50, construct a 95% confidence interval for the weekly average expenditure on fast food for adults 24 years of age and under.
A small independent stock broker has created four sector portfolios for her clients. Each portfolio always has five stocks that may change from year to year The volatility (coefficient of variation) of each stock is recorded for each year.
The probability that at least 5 children out of 10 in a sample taken from a school may have a blood level that may impair development is?
Draw the frequency polygon for these data using an initial class boundary of 21.5, an ending class boundary of 46.5 and 5 classes.
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