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What is the correlation between student cumulative GPA and the numbers of hours spent on school work each week? Be sure to include the computations. b. Is the correlation what you expected? c. Does the numbers of hours spent on school work have casual relationship with the GPA? d. What would be the predicted GPA for a student who spends 16 hours per week on school work?
On average, you receive 2 telemarketing calls per day. What is the probability that you will not receive any telemarketing calls today.
To find out whether living next to high-voltage power lines increases your chance of getting cancer, researchers selected various homes at random.
Let X bar be the average of n such independent measurements. Use Chebychev's inequality to estimate how large n should be such that P(|X bar - M |
Does a regression model imply causation? Why or why not? Provide an example which provides and independent and dependent variable from your place of work.
Provided an example of a research problem at any organization that would benefit from the employ of either descriptive statistics or probability distribution statistics.
The times it takes workers to complete a task at a certain assembly plant are normally distributed with mean = 10 minutes and standard deviation = 2 minutes.
A large discount chain compares the performance of its credit managers in Ohio and Illinois by comparing the mean dollar amounts owed by customers with delinquent charge accounts in these two states.
Create a scenario where the binomial probability formula could be used to determine the probability of some number of successes, x, in some given number of trials,n.
Your financial advisor sees this and tells you there is a 100% chance XYZ stock will gain over the 2-month period. Would you continue to use this financial advisor? Explain.
The manager for Select-a-Seat, a company that sells tickets to athletic games, concerts, and other events, has determined that the number of people arriving at the Broadway location on a typical day is Poisson distributed with a mean of 12 per hou..
What is 95% confidence interval estimate for average number of years served by all Supreme Court justices?
Serum ferritin is used in diagnosing iron deficiency. In a study conducted recently researchers discovered that in a sample of 28 elderly men the sample standard deviation of serum ferritin was 52.6 mg/L. For 26 younger men the sample standard dev..
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