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Research research and Sample 5000 household concerning TV shows they watch. Based on the sample 18% reported watching 60 Minutes. What is the 95% confidence interval for the proportion of all Americans that watch 60 minutes? What is the 95% confidence inteval rounded to three decimal places?
question two automatic dispensing machines are being considered for use in a fast-food chain. the first dispenses an
the average length of a new born baby is 20 inches with a standard deviation of 1 inch.if n100 what is the mean of the
For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ 2 , the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
What is the chance that you will win if you are allowed to take as many cards as you need?
What is the probability that more than 10 persons will use the machine between 1 p.m. and 2 p.m.?
Several years ago a new chief executive was appointed to a group of firms. On appointment the CE expressed concern about the quality of the senior management.
Give a formula for the probability law of the numerical valued random phenomenon described.
Why might normality be an issue here? (c) What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence? (d) If this is not a reasonable requirement, suggest one that is.
how large of a sample size do we need to estimate the mean annual income of native americans in onondaga county new
A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. At the end of December, the company wishes to forecast sales for January.
Do male college students spend more time than female college students using a computer? This was one of the questions investigated by the authors of the paper.
dr. cardenas studied political attitudes among di erent groups of 20- 40- and 60- year-olds. political attitudes were
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