Question

Following is the data regarding I.Q. of five students before and after performing yoga.

Is training effective? (Use 5% L.O.*.)

Answer 1

H0 : Mean I.Q. be for and after Yoga is same (H0: µ1 = µ2)

H1 : Mean I.Q. has increased after Yoga (H, : µ1 < µ2) {Upper tail test + K}

Under H0, the paired t-test statistic is

let x and y be I. Q. before and after yoga.

At ∝ = 5% for (q-1) = 5-1 = 4.d.f.

The lower tail critical value -K = -2.13

Here tcal **** in R. R.

∴ H0 is rejected and H1 is accepted

Condusion : I. Q. has improved after yoga