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After some preliminary analysis, it seems that there is difference among mean lifetimes of flashlight batteries of three different brands. Use a family confidence level of 0.95, apply Tukey multiple comparisons to compare the lifetimes of flashlight batteries of three different brands.
Brand A
Brand B
Brand C
38
32
24
36
27
25
31
28
29
42
26
A 42 inch piece of string is cut into two pieces. One piece is used to form a circle and the other to form a square. The two peices of string are not equal in length. How should the string be cut so the sum of the areas is a minimum?
A particular test for the presence of steroids is to be used after a professional track meet. If steroids are present, the test will accurately indicate this 95% of the time.
Verify whether this function is 1-1 and whether it is onto and find the formulas for f o f and g o f.
Christina makes $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no bills and gives her the change in quarters and dollar coins. There are 19 coins in all. How many of each kind are there?
What do the solutions represent? Is there a solution that does not make sense? If so, in what ways does the solution not make sense?
If 5 J of work are needed to stretch a spring from 9 cm to 10 cm and 7 J are needed to stretch it from 10 cm to 11 cm, what is the natural length L of the spring?
Let B(r,t) compute the balance (in dollars) of account after t years with an r% interest rate. What are the units of dB/dr? (dB/dr is in partials notation)
At a General Electric Plant they produced 12,000 jet engines in May. General Electric was able to sell 11,000 of these engines. Calculate total ending inventory cost assuming each engine cost $290,000.
A. At what rate are sales changing in the year 2002? B. What happens to sales in the "long run" (that is, as t )?
How much will he have to deposit into the account each month in order to reach this target after 25 years? (Give your answer, in dollars, correct to the nearest cent.)
What constitutes a rational expression? How would you explain this concept to someone unfamiliar with it?
finding the value of x such that the vertical distance is maximum.nbspconjecture consider the functions fx frac12
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