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Calculate the sample size that one would obtain using a 95% confidence level, estimated population standard deviation or estimate of the true population proportion, and a 5% margin of error. The testing population is 100. Sample size needed is 20. Testing interval is 5. Please show the formula and calculations.
the owners of a two-person business make their decisions independently of each other and then compare their decisions.
Compute the correlation coefficient. A scatter diagram is provided below. Based on it, does there appear to be any relationship between the number of assemblers and production?
samples of aircrew on long haul schedules are tested to assess the amount of time they spend in stage iv sleep. it has
Analyze the data using linear contrasts to make the following comparisons:
Comparing the lifetimes of two brands of penlight batteries, a researcher has randomly selected 10 batteries of brand A and 10 of brand B, then subjected each battery to the same usage test. Given the lifetimes listed below and using the 0.05 lev..
the comfort widget company makes several different sized widgets. the smallest widget the company manufactures has a
Use MINITAB to compute power and sample size for an upper-tailed, one sample z-test, with σ = 4, designed to detect a difference of 2, at the signi?cance level of α = 0.05: (1) if n = 25, determine the resulting power;
Do women and men have different opinions about affirmative action? Based on a sub sample of 2008 GSS, the output figure below shows respondent's sex (sex) and attitudes toward affirmative action (DISCAFF: Are whites hurt by affirmative action).
let x be the number of trials required to obtain a success where p is the probability of success on each trial. the
A researcher wants to know if there is a relationship between the number of shopping centers in a state and the retail sales (in billions $) of that state. What is the equation of the regression line
Male runners follow a normal distribution with unknown mean u and standard deviation o = 5 kg. You compute 95% confidence interval for u. What is the 95% confidence interval for u?
estimate the time required to provide a given laboratory procedure, suppose that we measured the amount of time required when the service was provided on 60 occasions.
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