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Suppose that a train conductor claims that the variance of the time required to go from Point A to Point B is 133 minutes. 60 train rides between Point A and Point B last month were reviewed at random. For those 60 rides, the variance of the times required to go from Point A to Point B was 150 minutes. At a significance level of .05, is there enough information to reject the train conductor's claim?
points a & b are the midpoints of adjacent sides of the square. what is the value of the shaded part?
The message is meant to be an array of length n, in which a symbol may be used more than once. Find the density of X and the CDF of X.
If a plane can travel 470nmph with the wind and 410 mph against the wind, find the speed of the plane in still air.
assume that the weight loss for the first month varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution. find the probability of the given range of pounds lost.
one sixth of the theaters seats are in the balcony. last night four-fifts of the main floor seats were filled.
if the feasible region of a linear programming problem is unbounded can we always conclude that the problem is
An open-topped cylindrical pot is to have volume 125in^3. What dimensions will minimize the total amount of material used in making this pot?
perform a literature survey on self-adjusting data structures. you may start with a recent paper and fully understand
What integer would represent your total budget?
The lifetimes of an appliance are normally distributed with a mean of 4.3 years and a standard deviation of .45 years. Describe the distribution of lifetimes for this appliance.
A statistics professor plans his classes so carefully that the lenghts of his classes are uniformly distributed 50.0 and 52.0 minutes. Find the probably that a given class period runs greater than 51.5 minutes.
What's the probability the newspaper's sample will lead them to predict defeat?
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