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A simple random sample is to be drawn from a population of 800. In order to have 95% confidence that the sampling error in estimating π is no more than 0.03, what sample size will be necessary?
If a household is known to have an income of at least $20,000, what is the probability that its annual income is in the $60,000-under $80,000 category?
using the methods of joints determine the force in each member of the truss shown. state whether each member is in
assume that a procedure yields a binomial distribution with a trial repeated n times. use the binomial probability
the daily news reported that the color distribution for plain mampms was 35 brown 20 yellow 20 orange 15 green and 10
Suppose that the actual mean value in the population is mu =120 , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?
Pick a multiple regression. Compare the t-statistic for a coefficient with the partial F-statistic for removing that one variable. How are they related?
The resulting equation for the line of best fit is given below, with x being observed for values between 10 and 200. If a production run was scheduled to produce 80 units, what would you predict the cost per unit to be in dollars?
What is the probability that a single student, randomly chosen from those taking the ACT, scores 21 or higher? What is the probability that the mean score x of a SRS of 50 students is 21 or higher?
A contractor is required by a county planning department to submit anywhere from one to five forms (depending on the nature of the project) in applying for a building permit. Let y be the number of forms required of the next applicant. The probabi..
1. For each of the following functions decide whether or not the function is a linear transformation. Prove your answer in each case :
The following table gives the opinion on collective bargaining by a random sample of 200 employees of a school system, belonging to a teachers' union.
On-Time Performance by Airlines According to the Bureau of Transportation statistics, on-time performance. At a = 0.05, do these results differ from the government's statistics?
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