Author Question: As the sample size increases and other factors are the same, the width of a confidence interval for ... (Read 87 times)

laurencescou · **on:** Jul 24, 2018

As the sample size increases and other factors are the same, the width of a confidence interval for a population mean tends to decrease.
Indicate whether the statement is true or false

Question 2

Indicate whether a negative or a positive correlation coefficient would be expected in a study involving the following two indicated variables: As the dosage of Heparin is increased, the Partial Thronboplain time (PTT) increases.