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Quantitative noninvasive techniques are needed for routinely assessing symptoms of peripheral neuropathies, such as carpal tunnel syndrome (CTS). The article A Gap Detection Tactility Test for Sen- sory De cits Associated with Carpal Tunnel Syndrome (Ergonomics, 1995: 2588-2601) reported on a test that involved sensing a tiny gap in an otherwise smooth surface by probing with a nger; this functionally resembles many work-related tactile activities, such as detecting scratches or surface de- fects. When nger probing was not allowed, the sample average gap detection threshold for m = 8 normal subjects was 1.71 mm, and the sample standard deviation was .53; for n = 10 CTS subjects, the sample mean and sample standard deviation were 2.53 and .87, respectively. Does this data suggest that the true average gap detection threshold for CTS subjects exceeds that for normal subjects? State and test the relevant hypotheses using a signi cance level of .01.
There are 130 cabinets in a row in a warehouse. The first worker to arrive opens the door of every cabinet. The next employee visits every other door and closes it.
prove that the space p of all polynomials is an infinite-dimensional vector space. hint mathematical induction may be
in a gallup poll of 1003 randomly selected subjects 373 said that they have a gun in their home. the accompanying
List and describe the three assumptions of ANOVA. When should researchers use different hypothesis tests for independent and related samples? What is the difference between a one-way-ANOVA and a two-way-ANOVA?
Industry standards recommend that 9 percent of new vehicles need warranty service in the first year. Determine the probability that none of these vehicles needs warranty service?
List the elements of the sample space S using the letters G and D for good and defective respectively. What is the mean number of defective hard drives that the small business receives if all their shipments come in sets of five that contain the sa..
An article in Parenting magazine reported that 60% of Americans needed a vacation after visiting their families for the holidays. Suppose this is the true proportion of Americans who feel this way. A random sample of 100 Americans is taken.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
assume that a quality characteristic is normally distributed. an x-bar control chart is constructed with 3 sigma
the test of means for two related populations matches the observations matched pairs in order to reduce the
Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. What is the likelihood the sample mean is at least $25.00?
you are a project manager in company ltd. and are assigned a new project that consists of nine major activities. these
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