Question

Testing: H 0 : μ = 31.685 H 1 : μ ≠ 31.685 Your sample consists of 46 subjects, with a mean of 32.2 and standard deviation of 2.03. Calculate the test statistic, rounded to 2 decimal places. t =______

Answer 1

Solution :

This is the two tailed test,  

The null and alternative hypothesis is ,

H₀ :   = 31.685

H_a :    31.685

Test statistic = t =

= ( - ) / s / n

= (32.2 - 31.685) / 2.03 / 46

Test statistic = t = 1.72