3 /9 | - 125% + 8 At the 5% level of significance, can we conclude that the coach's 6-month training program significantly reduces the average time to complete a 1500-meter run? 6. [5 marks] Given sample data: 0.612, 0.619, 0.628, 0.631, 0.640, 0.643, 0.649, 0.655, 0.663, and 0.679. Test Ho: MS 0.625 versus HA: M> 0.625 at a=.10. Assume the population is normally distributed. 7. [5 marks] Test Ho: MI S /2, HI: M > M2 at a= .10, where x1= 77.4, X2= 72.2, $1 = 3.3, $2 = 2.1, n1= 6, n2 = 6. Assume equal population variances, normally distributed populations, and independent random samples. N