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The on-line access computer service industry is growing at an extraordinary rate. Current estimates suggest that only 20% of the home-based computers have access to on-line services. This number is expected to grow quickly over the next five years. Suppose 25 people with home-based computers were randomly and independently sampled. Find the probability that more than 20 of those sampled currently do not have access to on-line services.
nineteen customers have placed service calls to obtain atampt u-verse. the maintenance technician can only service ten
Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?
in a learning experiment untrained mice are placed in a maze and the time required for each mouse to exit the maze is
A recent article in a computer magazine suggested that the mean time to fully learn a new software program is 40 hours. A sample of 100 first-time users of a new statistics program revealed the mean time to learn it was 39 hours with the standard dev..
consider the following bivariate data.pointabcdefghijx5346626241y5122213612calculat enbspsxnbspandnbspsy. give your
Five persons donate blood at the clinic on a particular day. Find the probability that at least one of the five does not have Rh+ blood.
1.an advantage of the permutation test over the t test for a difference in means is thata.it gives accurate p-values
The selection is to be random, and at the school there are 8 tenured faculty members in accounting. What is the probability that the committee will contain?
suppose that z is a random variable with a n0 1 distribution. define a stochastic process via xt ?tz and note that for
why the test statistic for goodness-of-fit is similar to the calculation for population standard
A television station estimates that 45% of college students watch the Super Bowl. For a sample of 240 students selected at random, what is the mean and variance of the number of students who watch this game?
The weight for a group of 18 month-0ld girls are normally distributed with a mean of 24.4 pounds and a standard deviation of 2.6 pounds. Use the table to find the percentage of 18 month-old girls who weigh more than 27.8 pounds.
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