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The diameter of bearings is known to have a mean of 35 mm with a standard deviation of 0.5 mm.
A random sample of 36 bearings is selected. What is the probability that the average diameter of these selected bearings will be between 34.95 and 35.18 mm?
Specify the probability distributions for each chance node, Draw a complete decision tree for GPC. Solve the decision tree using EMV. What should GPC do?
suppose that from the past experience a professor knows that the test score of a student taking his final examination
A company that manufactures precision special-alloy steel shafts claims that the variance in the diameters of shafts is no more than 0.0003. A random sample of 10 shafts gave a sample variance of 0.00027. At the 5% level of signi?cance, test wheth..
1.incomes in a certain town are strongly-right skewed with mean 36000 and standard deviation 7000. a random sample of
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.
you toss a fair coin repeatedly until some event happens.a what is the expected number of tosses until the pattern ht
Find the probability of guessing (a) exactly three answers correctly, (b) at least three answers correctly, and (c) less than three answers correctly.
For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h= -16t^2+32t.
The weekly dollar demand and supply functions for tents, t, are given by the following respective formulas:
Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treatment. An experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of two her..
Regression analysis works with the basic formula of a line, which is Y = mX + b. We can use it to look at causation. Think about the Lemonade Stand Game.
Good weather and tipping. In Exercise 29.1, you carried out basic ANOVA to compare the mean tipping percents for three experimental conditions.
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