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The checking accounts of the Quick Money Bank are categorized by the age of the account and the balance in the account. From this group of 2000 accounts what is the probability that an account has a balance of $500 or more, given that it is 3 or more years old?
Calculate the test statistic (z-score) for the sample. What deccision should be made about the null hypothesis, and what decision should be made about the effect of the program.
In a recent survey, 80% of the citizenry in a community favored the building of a municipal golf course. If you ask 15 citizens about this project, find the probability that
Would the null hypothesis be accepted or rejected in this case?
What are planned comparisons? Why do researchers making planned comparisons need to make the Bonferroni correction? If a researcher is making four planned comparisons using the .05 significance level
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
On average, you receive 2 telemarketing calls per day. What is the probability that you will not receive any telemarketing calls today.
What is the standard error of the difference between the means?
A car manufacturer tests the first 1,000 cars coming off the assembly line to see if their new anti-lock braking system works correctly. Use the typical values for control limits.
Let X be the number of correct guesses by your friend in the 100 trials and Use the Normal approximation with the continuity correction - Which of the following might be reasonably modeled by the binomial distribution
Forecast quarterly demand where x = 0 in second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. Determine the forecast for last quarter?
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
How do I construct an example where I would be able to apply the concept of expected value to a problem (e.g. a financial investment problem would be a great way to demonstrate how various stocks in a portfolio produce a weighted average of the ov..
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