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the incidence of polio during the years 1949-1954 was approximately 25 per 100000 population in a city of 40000 what is
a manufacturer of wool blankets inspects the blankets by counting the number of defects a defect may be a tear an oil
bank tellers in a certain bank make errors in entering figures in their ledgers at the rate of 075 error per page of
a shirt manufacturer determines by observation that the circumference of the neck of a college man is a random
a machine produces bolts in a length in inches found to obey a normal probability law with parameters m 10 and sigma
an urn contains m balls numbered i to m two balls are drawn 1 after the other with replacement without replacement
consider a square sheet of tin 20 inches wide that contains 10 rows and 10 columns of circular holes each i inch in
compute the characteristic function of a random variable x that has as its probability law i the binomial distribution
in exercises consider an urn containing 12 balls numbered 1 to 12 further the balls numbered 1 to 8 are white and the
the time measured in minutes required by a certain man to travel from his horne to a train station is a random
a radio station broadcasts the correct time every hour on the hour between the hours of 6 am and 12 midnight what is
the circumference of a wheel is divided into 37 arcs of equal length which are numbered 0 to 36 this is the principle
a parachutist lands on the line connecting 2 towns a and b suppose that the point at which he lands obeys a uniform
an angle 8 is chosen from the interval -1t2 to 7t2 by a random mechanism that obeys a uniform probability law over the
a number is chosen from the interval 0 to i by a random mechanism that obeys a uniform probability law over the
suppose that the life in hours of a electronic tube manufactured by a certain process is normally distributed with
assume that the height in centimeters of a man aged 21 is a random phenomenon obeying a normal probability law with
show that the probability mass function p of a numerical valued random phenomenon can be positive at no more than a
for k 1 2 7 exercise 3k is to sketch the distribution function corresponding to each probability density function or
suppose that the duration in minutes of long-distance telephone calls made from a certain city is found to be a random
suppose that the time in minutes that a man has to wait at a certain subway station for a train is found to be a random
the probability law of the number of white balls in a sample drawn without replacement from an urn of random
give formulas for and identify the probability law of each of the following numerical valued random phenomena i the