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Implantable heart pacemakers contain small circuit boards called substrates. These substrates are assembled, cut to shape, and fired. Some of the substrates will separate, or delaminate, making them useless. The purpose of this experiment was to study the effects of three factors on the rate of delamination. The factors were A: firing profile time, 8 versus 13 hours with the theory suggesting 13 hours is better; B: furnace airflow, low versus high, with theory suggesting high is better; and C: laser, old versus new, with theory suggesting new cutting lasers are better A large number of raw, assembled substrates are divided into sixteen groups. These sixteen groups are assigned at random to the eight factorlevel combinations of the three factors, two groups per combination. The substrates are then processed, and the response is the fraction of substrates that delaminate. Data from Todd Kerkow
Analyze these data to determine how the treatments affect delamination.
For the sample of 32 lg us cities the correlation between the mean # of sq ft per office worker and the mean monthly rental rate in the central business district is the -.363 at the .05 significance level
a researcher selects a sample of 6 professors 6 students and 6 administrators at a local school and has them rate the
1. a random sample of 16 size d batteries for cars yield a mean of 2.8 hours with standard deviation 1.3 hours.a find
the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
Examples of the binomial and poisson distributions are all around us. Identify a real-life example or application of either the binomial or poisson distribution. Specify how the conditions for that distribution are met.
heights of men on a baseball team have a bell shaped distribution with a mean of 184 cm and a standard deviation of 5
The quality control department of Widgets Manufacturing needs your help. They can't decide which significance level is appropriate for testing the claim that fewer than 50% of widgets from a production run are defective.
In checking the quality of the work, she notices that some slight blemishes occasionally are apparent. A sample of 20 pieces of work resulted in the following number of blemishes on each piece:
three children a couple plans on having three children. suppose that the probability of any given child being female is
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
complete problem 13 on page 54 using spss. copy and paste your spss output for 13a and 13b to the word document. for
a remote controlled undersea vehicle detects debris from a sunken craft at a rate of 60 pieces per hour. the time to
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