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Suppose a firm evaluates the productivity of the three shifts of workers who work in their factory. Each shift's performance is measured based on the amount of output that is produced during the shift - day, evening, or swing shift. Based on these ratings presented in the table below, produce an ANOVA table and determine if the average amount of output for any shift is different then the others.
Day Evening Swing
6 5 5
8 8 6
9 7 5
8 7 7
8 6 5
9 7 6
7 7 5
8 8 5
7 6 6
7 5 5
Does this result support original claim, or is population percentage considerably less than 45%. Use alpha=.05 for level of significance.
Find out 90% confidence interval for mean grade of all the students in the class.
Find out the least-squares regression line and interpret its slope.
If one item is chosen at random, determine these probabilities. It is a TV
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
How would managers find benefit in helping them to obtain valuable information in problem identification research. Discuss whether these data are secondary or primary and justify your answers
Find or create a data set that would allow you to explain what is meant by mean, median and mode. Make sure to also show any calculations or formula necessary. Describe or provide as much information on the data set as possible.
calculate the mean or expected value for the number of retransmissions and calculate the standard deviation for the number of retransmissions.
The frequency distribution below shows the distribution for suspended solid concentration (in PPM) in river water of 50 different waters collected in September 2011.
Calculate the probability that the median of the sample or average medians is:
Compute the z-score for M = 89 for a sample of n = 25 scores. Is this sample mean in the middle 95% of the distribution?
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