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The final grades given by two professors in introduction to operations research course have been carefully examined. The students in the first professor's class had a grade point average of 3.0 and a standard deviation of 0.2. Those in the second professor's class had grade points with an average of 3.0 and a standard deviation of 1.0.
If you had a choice, which professor would you take for this course and why? Give a very detailed answer.
The sample mean of the sampling distribution of a statistic is 6 and the standard error of the statistic is 1.03. What is the probability that xbar > 7.52?
Find the critical t-value that corresponds to 90% confidence. Assume 90 degrees of freedom.
Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work.
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
What are the possible combinations of coins that Sanjay could have received in change?
There are 500 employees in a firm, 45% are female. A sample of 60 employees is selected randomly. (a) Determine the standard error of the proportion.
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
Setermine the probability that a specific driver had exactly two violations?
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p -value.
Random number generation based on discrete distribution and evaluate the average queue length, waiting time, and percentage utilization for each system.
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