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Compute the sample sizes for Exercise 1 when the finite-population correction factor is ignored. What do you conclude about the importance of the finite population correction factor for this population?
Exercise 1 A botanical researcher wishes to design a survey to estimate the number of birch trees in a study area. The study area has been divided into 1000 units or plots. From previous experience, the variance in the number of stems per plot is known to be approximately σ2 ≈ 45. Using simple random sampling, what sample size should be used to estimate the total number of trees in the study area to within 500 trees of the true value with 95% confidence? To within 1000 trees? To within 2000 trees?
Compute a 99% confidence interval for the true average number of months taken by bankruptcy petitioners to acquire debts listed on their petitions.
q1.the weights of first graders at freemont elementary were recorded as follows. construct a frequency distribution
chicken delight claims that 83 percent of its orders are delivered within 10 minutes of the time the order is placed. a
if you had the chance to set up a simple experiment at your workplace to test a hypothesis would you have your research
We have a deck of 52 playing cards. What is the probability of drawing?
the state fish and game division claims that 75 of the fish in homestead creek are rainbow trout. however the local
a state makes licenses plates with four letters followed by four digits how many licences plates can you have with no
Assuming a linear relationship between sales and years of experience f a salesperson, asc the least-squares method to find the regression coefficients. b0 and b1.
a multiple-choice test has 30 questions and each one has five possible answers of which one is correct. if all answers
Let X be the random variable which denotes the number of saves that are made by the lacrosse goalie. Find the expected value and standard deviation of the random variable.
The Texas Transportation Institute at Texas A&M University conducted a survey to determine the # of hours per year drivers waste sitting in traffic.
mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this valueis higher than many others are charging. A sample of 40 mortgages filed in the county courthouse shows anaverage of 9.25% with a standard deviation..
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