In the given series 2,5,3,6,8,4,9,6,8,1,5,1,6,8,7,5,6,2 ,7,5,3,6,8,3, 7,6,8,1,5,6,8

How many times the number '6' is followed by the number '8' but '8' should not be followed by '1'?

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?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.