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Q1) Die with 4 sides {1, 2, 3, 4} is tossed 2 times. Let X equal maximum of two observations and let Y equal minimum. Determine joint pmf of X and Y, and correlation coefficient. Are X and Y independent?
Create three tables: Sample Space for two tosses, table for values of X and Y for each outcome, finally table for pmf.
Q2) National average SAT score is 1025. Nothing is known about distribution of distribution except that standard deviation is 100. If sample of 50 students is randomly chosen, determine the probability that their average SAT score would exceed 1060?
What is the best estimate of the average tread life in miles for the entire population of these tires?
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
Consider a four digit uniform random number generator; as in each of the 10,000 values 0.0000 through 9999 is equally likely. Find the mean and variance of the values produced by such a random number generator.
Calculate mean and SS for sample of difference scores.
A. Determine the regression equation. B. Determine the estimated sales if 40 contacts are made.
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
Use MegaStat's output for simple linear regression to determine the regression equation
Standard deviations for first- and second-time and confidence interval
In rectangular coordinate system, determine the distance between the points (-4,1) and (8,6).
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
For a standard normal distribution, findout the percentage of data that are among 3 standard deviation below the mean also1 standard deviation above the mean.
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