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Question: Care was taken to operate a metal casting process so that no assignable causes in variation were introduced, and randomly selected castings were weighed. The target weight of the castings was 28 pounds. The following weights came from 30 random observations.
28.00
27.96
28.01
28.02
28.04
28.03
27.94
27.99
27.98
28.05
Estimate the standard deviation of the process.
What is the Cp if the specifications are 28.0 + 0.1 pounds?
Find the 95% confidence interval of the mean score for all 50 golfers. Find the 95% confidence interval of the mean score for all golfers if this is a sample of 80 golfers instead of a sample of 50.
Table 7.28 is from a General Social Survey. Subjects were asked whether methods of birth control should be available to teenagers between the ages of 14 and 16, and how often they attend religious services.
If this side is green, what is the probability that the other side of the card is also green?
your name and that of a friend is included in a raffle drawing. for the raffle two tickets will be drawn and those
Five pair of shoes print length and height were used to conduct a formal hypothesis test of the claim that there is linear correlation between the two variables. Use the value of r .591and find the appropriate test statistics method at 0.05 signif..
Scores on an endurance test for cardiac patients are normally distributed with mean = 182 and standard deviation = 24.
What is the variable of interest?- Is this sample random? If so, justify your answer. If not, describe a technique to obtain a random sample.
The width of a rectangular gate is 2 meters (m) larger than its height. The diagonal brace measures sqrt 6 m. Find the width and height.
a triathlon consisting of swimming cycling and running is one of the more strenuous amateur sporting events. an article
If 2 randomly chosen students are surveyed and both feel optimistic about their employment prospects, what is the probability that both were math students?
find the profitability index (PI). Do you accept the project? Why or why not?
90% confidence interval for the difference inmean resting rates for men & women & interpret the interval.
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