If there are 23 observations in a sample, how many degrees of freedom are there?
ID: 3334234 • Letter: I
Question
If there are 23 observations in a sample, how many degrees of freedom are there? (The context here is for finding a t value when constructing a confidence interval or testing a hypothesis for the population mean) QUESTION 14 0.5 If there are 47 observations then how many degrees of freedom are there for the t distribution (for a sample mean)? QUESTION 15 0.5 If there are 33 observations then how many degrees of freedom are there for the t distribution (for a sample mean)? QUESTION 16 0.5 If the sample size is 65 and the population standard deviation is 16.6 then the standard error is? (Answer to two decimal places)Explanation / Answer
13. Number of observations = 13
=> Degrees of freedom = 13 - 1 = 12.
14. Number of observations = 47
=> Degrees of freedom = 47 - 1 = 46.
15. Number of observations = 33
=> Degrees of freedom = 33 - 1 = 32.
16. = 16.6 n = 65
s = / n
= 16.6 / 65
= 2.06.