A six sigma green belt is performing a hypothesis test of two sample means. Sixteen samples of method A and sixteen samples of method B are produced. The standard deviations are unknown, but thought to be the same. How many degrees of freedom are to be used for the t test

any options?

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

no i do not : ( what is it?