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adult gamers versus teen gamers a pew internet project data memo presented data comparing adult gamers with teen gamers
draw some pictures consider the binomial setting with n 50 and p 04a the sample proportion p will have a
the normal curve and the p-value a test statistic for a two-sided significance test for a population proportion is z
more on the normal curve and the p-value a test statistic for a two-sided significance test for a population proportion
draw a picture draw a picture of a standard normal curve and shade the tail areas to illustrate the calculation of the
the effect of x in given example suppose that your product provided better uva and uvb protection for 15 of the 20
the effect of n in given example consider what would have happened if you had paid for twice as many subjects to be
whats wrong explain what is wrong with each of the followinga the margin of error for a confidence interval used for an
country food and inuits country food for inuits includes seal caribou whale ducks fish and berries and is an important
guitar hero and rock band an electronic survey of size 7061 reported that 67 of players of guitar hero and rock band
a poll of 5000 residents in brazil canada china france malaysia south africa and the united states asked about what
guitar hero and rock band refer to the previous exercisea how would the result that you reported in part c change if
are seniors prepared for class the national survey of student engagement found that 24 of seniors report that they
confidence level and interval width refer to given exercise would a 90 confidence interval be wider or narrower than
instant versus fresh-brewed coffee a matched pairs experiment compares the taste of instant versus fresh-brewed coffee
long sermonsthe national congregations study collected data in a one-hour interview with a key informant-that is a
toss a pair of dice two times consider tossing a pair of fair dice two times for each of the following pairs of events
a different transformation refer to the previous exercise now let y 3x2 - 2a find the distribution of yb find the mean
work with a transformation here is a probability distribution for a random variable xvalue of x12probability0406a find
repeat the experiment many times and take the mean here is a probability distribution for a random variable xvalue of
repeat the experiment many times here is a probability distribution for a random variable xvalue of
find some probabilities the previous exercise gives the projected number in thousands of earned degrees in the united
academic degrees and gender here are the projected numbers in thousands of earned degrees in the united states in the
find a conditional probability if julie is offered the federal job what is the conditional probability that she is also
find the probability of another event what is the probability that julie is offered both the connecticut and new jersey