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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?
Construct a 95% confidence interval for the proportion of individuals in the target market segment who are aware of the firm's new brand
Find out and interpret coefficients of correlation and determination for U. S. prices versus Canadian prices.
1. when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is
If a technical assistant is randomly selected, what is the probability that she would like to have MAC, given that she would like to have a PC as well?
Determine how long until the population of your city doubles assuming a steady growth rate - Discuss factors that could possibly influence the growth rate of your city and state.
Their average cost was $405 with a standard deviation of $80. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
Although the rules of probability are just basic facts about percents or proportions, we need to be able to use the language of events and their probabilities.
Explain how much should the airport authority be willing to pay for perfect information about the success of a brand new airport.
the data shown in table are chemical process yield readings on successive days read down then across. construct a
Consider a level α = .10 test of H0 (8.1) versus the alternative τ > 0 based on K. How many bivariate observations (n) will we need to collect in order to have approximate power at least .95 against an alternative for which τ = .6?
suppose the probability of a bike getting stolen in honolulu is 10 and 22 bikes are randomly selected in honolulu.1
The Appliance Center has six sales representatives at their North Jacksonville outlet. Listed below is the number of refrigerators sold by each last month.
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