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1. What is a measure of central tendency? Distinguish between the mean, median, and mode.
2. What is a measure of variability? Distinguish between the standard deviation and the range.
3. What is a correlation coefficient? What do the size and sign of the correlation coefficient tell us about the relationship between variables?
in a test of the effectiveness of garlic lowering cholesterol 49 subjects were treated with garlic in a processed
States 0 and N are called absorbing states since once entered they are never left. Note that the preceding is a ?nite state random walk with absorbing barriers (states 0 and N).
GenXY Motors Pte Ltd sells second hand cars. The company has four shops in different locations either within or outside of the city area.
Use the z-score to determine which movies, if any, should be considered high-performance outliers in each of the four variables. If there are any outliers in any category, please list them and state for which category they are an outlier. Describe..
At the .05 significance level, can we conclude that there is a difference in their mean times?
an interaction effect that is not significant indicates thata. the influence of one factor is not the same for each
Formulate an appropriate hypothesis testing procedure to answer this question. Test these hypotheses using the data and draw conclusions, using α = 0.01
the stats on heart disease a year is about 600000 americans die yearly. in 2008 these were the percentages according to
a researcher wishes to estimate the percentage of adults who support abolishing the penny. what size sample should be
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the standard deviation is $100. (a) what statement can you make about the range $300 to $700? (b) what state..
Only two doctors would make a diagnosis on patients coming into the same STD clinic for gonorrhea. The probability of the two doctors making a diagnosis of gonorrhea is (independent, dependent, synergistic, cannot tell).
1.suppose you hear an old-timer say why in my day kids were much more respectful and didnt cause as much trouble as
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