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(a) A certain machine makes electrical resistors having a mean resistance of 40 ohm ant a standard deviation of 4 ohms. Assuming that the resistance follows a norma distribution and can be measured to any degree of accuracy, the resistors are acceptablt only if fallow the speci?cation which is 30 ohm to 50 ohm.
(i) What percentage of resistors will go to scrap?
(ii) Find the probability that a resister has more than 50 ohm resistance.
(b) The IQs of 600 applicants to a certain college are approximately normally distributec with a mean of 115 and a standard deviation of 12.
(i) If the college requires an IQ of at least 95, how many of these students will be rej ecter on this basis of IQ, regardless of their other quali?cations?
(ii) If 83% of the candidate are rejected what is the minimum score for selection criteria.
Which of the following preference orderings, if any, could characterize his preferences? Tell me any/all that apply, and explain how you know this.
The philosophies that created the US Constitution were a political experiment, one that had never been tried before. Write an analysis of the influence and changes for each of the following democratic republican ideals ideals.
suppose four people two men and two women sit in a row on chairs marked from left to right 1 2 3 4. let x be the number
Describe a different example of where the independent variable, while highly correlated to the dependent variable, does not cause the dependent variable to change directly.
the weight of a sophisticated running shoe is normally distributed with a mean of 12 ounces and a standard deviation of
Calculate the metrics you selected - Use the statistical metrics calculated from the training data set to training the statistical model - Use the statistical metrics calculated from the training data set to training the statistical model.
a card is drawn at random from a deck consisting of cards numbered 2 through 10. a player wins 1 dollar if the number
What is the upper bound of the 95% confidence interval for the mean price for all phones of this type?
Suppose a shock causes a unit damage to the machine with probability 0.1 and no damage with probability of 0.9. Successive shocks are independent. Suppose the damages are cumulative and the machine can withstand at most four units of damage. (That..
In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? Give a real-world example of when you could have an infeasible problem.
When meters on the gas pumps at the Jefferson Road Auto Service Center indicate 1 gallon, the mean amount of gas supplied is actually less than 1 gallon.
find the weighted mean for three exams if the first one was worth 20 and the student received a 70 the second was worth
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