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A few random results for you to ponder...do the results justify the conclusions? Why or why not? Give a reason why the conclusions don't necessarily follow from the statement.1) Studies find that students who drink more tend to have lower grades. Therefore, drinking leads to poor student performance.
Mention the critical value of test statistic (Or give the p-value of the test.)
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
How many nickels does a coin counter manufacturer need to weigh so that she can be 98% confident that her sample mean is within 25 milligrams.
A study suggested that personality type is related to heart disease. Specifically, type A people,who are competitive, driven, pressured, and impatient, are more prone to heart disease.
As a manager of an organization, what statistics would you use and why if you wanted to estimate your annual employee turnover? Be sure to specifically identify the statistical formulas and what additional data you would need to determine your est..
The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.
Happy Hector and Party Paul are each having a catered party at Fun Factory. Hector's party is in the hall and Paul's party is on the Patio.
You are the manager of a fast food restaurant. You want to determine whether the population mean waiting time to place an order has changed in the past month from its previous population mean value of 4.5 minutes.
Calculate chi-square for the cross-tab. Show your work. Is there a statistically significant relationship between these variables?
Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
Following are the data collected. Should the head of the Bureau be concerned about the time taken at lunch by employees? Why?
What does the binomial distribution chart look like? Can I use Excel to come up with this chart?
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