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Statistics - Degrees of Freedom independent two sample test?
A independent two-sample test with n1=34 and n2=42 would have how many degrees of freedom for the critical value?
a. 34
b. 72
c. 74
d. None of the above
bill a psychologist has developed a new aptitude test. he was able to show that 80 of the public passed the test. a
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Suppose a one tailed t test is being applied to find out if the population mean is less than $120. The level of significance selected is 0.01 and 26 bank accounts were sampled.
British scientists have developed a 15 minute brain scan they hope could be used to detect autism in children. Autism and related disorders affect up to 7 out of every 1000 individuals.
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in constructing a confidence interval for the mean the z distribution provides a result nearly identical to the t
Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer. Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H 0 , H 1 and for..
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