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1 suppose we had used 10000 in places of 1000 in the simulations what would the final graph have looked like2 write a
judgmental samples a keep the accompanying sheet of rectangles covered until the instructor gives the signal to begin
random samples a use a random number table or a random number generator in a computer or calculator to select 5
sampling bias your instructor will now place the true average area of the rectangles on each of the plotsa does either
discuss the difference between sampling bias and measurement bias give exam ples of statistical studies in which each
1 find an article printed in the media that reflects sampling bias the article below and on p 93 is an example discuss
obtain a map of your state that shows the county boundaries your job is to show the geography department how to select
the national safety council reported that air bag-related fatalities dropped to 18 in the year 2000a compute the
1 cereal again the correlation between a cereal s fiber and potassium contents is r 0903 what fraction of the
in a geometric distribution the height of each bar of the histogram is a fixed frac tion r of the height of the bar to
get a copy of the current handbook of united states coins official blue book of united states coins and graph the
the distributions you constructed for samples of size 1 5 10 and 25 are called sampling distributions of the sample
the three characteristics you examined in activity question 8 shape center and spread of the sampling distribution make
do you think the mean of the values in this histogram once it is completed will be larger than smaller than or the same
1 complete the histogram and determine its mean and standard deviation which of the three choices in part 5 appears to
1 estimate the mean and the standard deviation of the distribution confirm these estimates by actual computation2 make
1 rather than considering the sampling distribution of the sample percentage p you could consider the sampling
1 write a brief summary of what you learned in this activity about sampling distributions2 suppose each student in the
describe the shape of a waiting time geometric distribution for a given proba bility p of a success on each trial will
in some games such as monopoly a player must roll doubles before continuing use a pair of dice or use random digits to
you will need a die or another method of simulating an event with a probability of 13 roll your die if the side with
pairs of people eating lunch together enter a cafeteria that has square tables with one chair on each side each pair
suppose you are now guessing your way through a loquestion true-false test conduct a simulation for approximating the
the 1989 teenage attitudes and practices survey see ref 2 obtained completed questionnaires either by telephone or mail