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According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then. A sample of 100 adults is asked about their current drinking habits; 67 report drinking, and 33 report not drinking. a) What is X2obt? b) What is (are) the df for this test? c) What is X2cv? d) What conclusion should be drawn from these results?
Xelia decides to diversify its product portfolio by introducing 4 different versions of its control systems
the traditional view about the normal curve in psychology is that normal curves are 6a rare in nature but often occur
suppose we wanted to compare the somatic complaints as shown on a scale known as pss of 3 groups of people non-smokers
three dice were rolled. what is the probability that exactly one six came up if it is known tha tat least one six came
How will you separate the effect of advertising on sales?
supplier on-time delivery performance is critical to enabling the buyer? organization to meet its customer service
2 to every even-numbered card, with aces being 1s. Determine the frequencies of 0, 1, and 2. Use SPSS to get the value of test statistic and p-value.
To do this, he selects 16 bags of tortilla chips of this brand at random and determines the net weight of each. He finds a sample mean of 13.88 oz. with a standard deviation of s = 0.24 oz.
It was found that the correlation is about .80 and the regression equation is handspan = 3 + 0.35 height What is the predicted handspan for someone 5 feet tall?
the number of kernels of corn in a bag of microwave popcorn is 1262 with a standard deviation of 118 kernels.
aluminum aircraft parts are always subject to possible corrosion. to prevent corrosion an anodizing solution is often
what is the probability of tossing a coin 5 times and getting all
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