A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. State the hypotheses to test whether the mean transaction time exceeds 50 seconds.

Answer 1

Ho: µ = ?

Ha: µ does not equal ?
µ < ?
µ > ?

Ho is the null hypothesis. Ha is the alternate hypothesis.

The question mark is the value for you to fill in. One of the three is the correct one for the alternate hypothesis. Read the question carefully to determine which one to use.

Answer 2

H0: < 60
H1: > 60