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the endurance data set contains data from a 1983 paper km83 testing the effects of vitamin c on grip strength and
joe flips a coin 200 times and records 115 headsa give a 95 confidence interval for the true proportion of heads that
in a blind taste test 45 coffee drinkers sampled fresh brewed coffee versus a gourmet instant coffee when stating their
can pleasant aromas help a student learn better hirsch and johnston of the smell amp taste treatment and research
william gosset aka student did an experiment in which regular and kiln dried seeds were planted in adjacent plots in 11
landon is doing some simulations to see how well the simulated coverage rate compares to the nominal 95 coverage rate
a 95 confidence interval for the mean weight gain of adult mice on a certain diet is 112 547 gramsa what was the mean
a statistical study reports a 95 confidence interval for the mean weight of a certain species of bird as 1545 g plusmn
just as we had one-sided and two-sided p-values we can define one-sided as well as two-sided confidence intervals a
show that the sample variance of a simple random sample is a biased estimator of the population variance but that the
show that in all interesting cases if circtheta2 is an unbiased estimator of theta2 then circtheta is not an unbiased
notice that in the preceding two problems the sums of the coefficients of w2 w3 and w4 are 0 in each casea why will
compute 95 confidence intervals for sepal width for each of the species in the iris data set intuitively what do these
compute 95 confidence intervals for sepal length for each of the species in the iris data set intuitively what do these
compute 95 confidence intervals for the ratio of sepal length to sepal width for each of the species in the iris data
derive the method of moments estimator for pi for a sample of size n from a nbinoms pi-distribution treat s as known as
write an r function moment kx centeredkgt1 that takes a numeric vector and returns the kth sample moment either circmuk
the miaa05 data set contains statistics on each of the 134 players in the miaa 2005 mens basketball season how well
a sample of 10 units were all tested until failure kec94 the times-to failure were 16 34 53 75 93 120 150 191 240 and
in this problem you are asked to find your own data set there are numerous online sites that have data in various
suppose we use iid sampling to obtain a sample of size 16 from a normal population with standard deviation sigma 10
consider a very small population with only five individuals the values of a variable for this population are 1 2 4 4 9a
a local newspaper conducts a phone survey to judge public opinion about a referendum the referendum passes if a
the fastr data set jordan8687 contains michael jordans point totals for every game of his 1986-1987 regular season is a