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One sample has SS = 48 and a second sample has SS = 32. When both samples have n =5, what is each sample variance and computed pooled variance?
Then, if the first sample is n = 5 and the second is n = 9, what are the sample variances and the pooled variances?
Give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected
She believes that the number of customers served on weekdays follows a normal distribution. Construct an 99% confidence interval of the average number of customers served on weekdays.
IS there any evidence that a freshman's chances to graduate may depend upon what kind of high school the student attended? Describe.
Create network for aerospace launch project below and determine its critical path.
What is the 95% confidence interval for the true mean length of the bolt?
The area under the standard normal curve between 0 and 2 is twice the area under area between 0 and 1.
Use this information to construct a probability table, and then calculate each of the following probabilities:
Choose a business problem that is based upon an experience from your place of work or home environment. Briefly describe the business problem and the research methodology that you would employ to gather data and test your hypothesis
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
How many students should be surveyed to estimate the mean score within 25 points with 90% confidence?
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