Question

To calculate a t-statistic for a specific sample, what information is needed about the population from which the sample was obtained?

Group of answer choices

the value for µ

the value of N

the value of Ơ

Answer 1

Solution:

Answer is

the value for µ

Explanation:

For testing the population mean µ , there are two options

z test for mean and t test for mean

When the population standard deviation is known , we use z test.

When it is unknown , we use t test. In t test , we use sample standard deviation.

The test statistic t is given by

t =  

where is sample mean , s is standard deviation , n is sample size , is hypothetical mean value.

(note that denotes the sample size , N denotes population size)

So , answer is

the value for µ