How many millilitres are in a litre

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?