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During the recent primary elections, the democratic presidential candidate showed the following pre-election voter support in Alabama and Mississippi. State Voters Surveyed Voters Favoring the Democratic Candidate Alabama 800 440 Mississippi 600 360
Using alpha = 0.05, test whether or not there is a significant difference between the preferences for the two candidates. Use alpha = 0.05.
a research study showed that 50 of workers change jobs within 2 years of employment. george took a random sample of 100
brian smith sells a set of movie posters 12 and baseball cards 8 at a local flea market. on last sunday brians total
What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one- or two-tailed.
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per pound, with a standard deviation of 7 grams of fat per pound.
A coin was flipped 100 times and came up heads 59 times and tails 41 times. The expected outcome was to land on heads or tails 50 times each.
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
Consider the single Linear Regression Model: without an intercept (β is a scalar constant; X is a scalar random variable).
Because of a recent incident in which a number of people became ill after eating undercooked hamburger meat, intensive interest has centered around the cooking time for hamburger patties.
Finding appropriate z- and t-scores is important when constructing confidence intervals. Confidence intervals allow one to estimate important population parameters such as population mean, population proportion, population standard deviation, etc. We..
the following data lists the average monthly snowfall for january in 15 cities around the us20 13 15 28 16 25 2 1435 42
problem 1 - of a random sample of 600 trucks at a bridge 114 had bad signal lights. construct a 95 percent confidence
question a car averages 27 miles per gallon. if gas costs 4.04 per gallon which of the following is closest to how much
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