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The bending strength of the poles is a consideration to a manufacturer of fiberglass fishing rods. Samples are chosen from the process, and the average bending strength of four samples is found. The target mean bending strength is 30 kg, with a process standard deviation of 0.8 kg. Suppose that it is desired to detect a shift of 0:75 from the target value.
If the process mean is not significantly different from the target value, it is also desirable for the average run length to be 300. Find the parameters of an appropriate V-mask.
If the manufacturer desires that the average run length not exceed 13 so as to detect shifts of the magnitude indicated, what will be the parameters of a V-mask if there is some flexibility in the allowable ARL when the process is in control?
A box of 200 bolts of it known that 2% of such bolts are expected to be defective.(you may take the distribution to be poission; e-4=0.0183).
What is the best estimate for total mass of the rod and Determine the value of VL for a person of age 65 and determine the heat absorbed by a collector.
the following data reports the income rate 1000 and average expense 1000 for the large area in the u.sareaincome rate
Complete this exercise by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most?
There are three different routes connecting city A and city B. How many ways can a round trip be made from Ato B and back? How many ways if it is desired to take a different route on the way back?
in a truefalse quiz there are two possible answers to each of 5 questions. a student has not studied for the quiz and
An urn contains 7 green and 9 black balls. Five balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn.
when taking an exam some students quickly answer all the questions they know how to do. if they go back and revise
the mode of a discrete random variable x with p.m.f. px is that value x for which px is largest the most probable x
the question two distinct integers are chosen at random and without replacement from the first six positive integers.
Surface defects have been counted on 25 rectangular steel plates, and the data are shown below. Set up a control chart. Does the process producing the plates appear to be in statistical control?
find the area under the standard normal curve which lies between z 0.72 and z
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