Explain how to determine the following from the graph:
-number of times the barnacle went beneath the water level if the boat traveled a distance of 20 m
-number of meters of the 20 m trip that the barnacle was underwater

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 range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label