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Six people have declared their intentions to run for trustee seat in the next local election. A political poll is condcted during the campaign among 1,200 randomly sampled voters to determine if there is any clear preference among the voters. The resutls of the poll are listed here. Use the 5 step test of hypothessis procedure to determine if there is a preference among voters for one candidate, or are the candidates liked equally by the voters
candidate a b c d e f
responses 180 240 200 130 125 145
Compare 2 moving averages using MSE and compute Exponential smoothing. The subsiquent data which represents demand for company ABC's products for the last 10 months.
Assuming that a difference (Δ) of 2 lbs. in the mean was important to detect, a maximum Type I Error (α) level of 5%, and the desire to run a two-tailed test, then:
Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
what is the formula of t-quantile distribution needed to calculate an exact 90 confidence interval for the
describe the importance of tchebysheffs theorem to the ability to find bounds of
the alphacor company experiences some type of failure on its computer network on average once every 4 hours. assume
At a factory that produces pistons for cars, Machine 1 produced satisfactory pistons and unsatisfactory pistons today
Given the following data on Asian and European Share of U.S. Light Truck Sales(1990-2003): Which trend model is best, and why? If none is satisfactory, explain.
a mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed with a mean life of
U.S. News & World Report publishes the average starting salary and the average GMAT score for MBA graduates at each of the top 80 ranked schools in the country.
a sample of 20 items provides a sample standard deviation of 5. compute the 95 confidence interval estimate of the
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