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this is a hypothetical sat stands for scholastic achievement test widely used for college admissions in the us dr sally
an investigator writes statistical tests are a powerful tool for deciding whether effects are large do you agree or
an epidemiologist says that randomization does not exclude confoundingnbsp nbspconfounding is very likely if
assignment t test for dependent samplesdirections conduct a t test for dependent samples to answer the questions based
doctors often use body mass index bmi to measure obesity bmi is weightheight2 where weight is measured in kilograms and
assignment independent samples t testconduct an independent samples t test to answer the questions based on the
to demonstrate causation investigators have used i natural experiments ii randomized controlled experiments and iii
exercise independent samples t testuse the independent samples t test option in spss to answer the questions based on
exercise independent samples t test1 when is it appropriate to use a t-test for independent means2 what is meant by the
a statistician has a sample and is computing the sum of the squared deviations of the sample numbers from a number q
a die is rolled 180 times find the expected number of aces and the variance for the number of aces the number of aces
use the data in table 1 to find the mse and the rms error for the regression line predicting length from weight which
can you determine a in equation 7 by measuring the length of the spring with no load with one measurement ten
in the pearson-lee data the average height of the fathers was 677 inches the sd was 274 inches the average height of
practice exercise t test for dependent meansuse the paired samples t test function in spss to answer each of the
an economist is specifying a model for the butter market in illinois she likes the model that we used forwisconsin she
exercise t test for dependent means1 when is it appropriate to analyze data using a t test for dependent samples2 what
what is the difference between the numbers for the two respondents in exercises 1 and 2 how do schneider et al
1 what is the interpretation of the y-intercept and the slope in a simple linear regression model2 what is the
using the data in table 2 of schneider et al estimate the probability that a respondent with the following
last chance for bonus points in the over-identified case we could estimate sigma2 by fitting 6 to the data and dividing
suppose the exogeneity assumption holds can you use the data to show that a response schedule is true usually sometimes
suppose the exogeneity assumption holds can you use the data to show that a response schedule is false usually
a prominent social scientist describes the process of choosing a model specification as followswe begin with a
yule ran a regression of changes in pauperism on changes in the out-relief ratio with changes in population and changes