80 seconds to completely travel a distance of 1440 meters while Engine 2 took 100 seconds to completely travel a distance of 1700 meters. If Engine 1 is X meters long and Engine 2’s speed is Y meters per second, what is X + Y?
80 seconds to completely travel a distance of 1440 meters while Engine 2 took 100 seconds to completely travel a distance of 1700 meters. If Engine 1 is X meters long and Engine 2’s speed is Y meters per second, what is X + Y?
the performance of old and new technology by testing hypothesis that ‘new technology shows higher
performance’ with 5 percent level of significance. Suppose variances of two technologies’ performance are
equal. (30 points)
Engine No Life (1,000 miles) Engine No Life (1,000 miles)
1 95 8 101
2 91 9 103
3 98 10 99 4 100 11 107
5 102 12 97 6 91 13 98 7 90 14 91