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The following stem-and-leaf chart from the Minitab software shows the number of units produced per day in a factory.
1
3
8
4
2
5
6
9
0133559
(7)
7
0236778
59
00156
10
36
a. How many days were studied?
b. How many observations are in the first class?
c. What are the minimum value and the maximum value?
d. List the actual values in the fourth row.
e. List the actual values in the second row.
f. How many values are less than 70?
g. How many values are 80 or more?
h. What is the median?
i. How many values are between 60 and 89, inclusive?
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When a result is not extreme enough to reject the null hypothesis, explain why it is wrong to conclude that your result supports the null hypothesis.
Your quality control department has just analyzed the contents of 20 randomly selected barrels of materials to be used in manufacturing plastic garden equipment.
a. Define variables that would tell how many units to purchase from each source. b. Develop an objective function that would minimize the total cost.
How much difference does the choice of model make? Which forecasts do you trust the most, and why? (f) If you have access to Ward's Automotive Yearbook, check your forecasts.
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1. the following table displays the salaries of 20 workers per week210 209 212 208 217 207 210 203 208 210210199 215
the time spent in days waiting for a heart transplant in two states for patients with type a blood can be approximated
question 1to test the efficacy of admissions or release an emergency room embarks on a controlled experiment. each
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